Dacron large biological fiber containing rose active component and preparation method of polyester large biological fiber

Abstract

The invention provides a large polyester bio-fiber containing rose active ingredients and a preparation method of the large polyester bio-fiber. The large polyester bio-fiber comprises the following raw materials in parts by weight: 10-12 parts of polyester chips and 2-3 parts of rose extract microcapsules, the preparation method of the rose extract microcapsule comprises the following steps: adding tannic acid into a sodium alginate aqueous solution, stirring and mixing to obtain a solution A, adding nano-hydroxyapatite, a calcium chloride / glutaraldehyde composite cross-linking agent, a rose extract and lauryl sodium sulfate into a chitosan acetic acid aqueous solution, stirring and mixing to obtain a solution B, and uniformly stirring to obtain the rose extract microcapsule. And mixing and stirring the solution A and the solution B to obtain the rose extract microcapsule. According to the polyester large biological fiber containing the rose active component and the preparation method of the polyester large biological fiber, the rose active component is effectively and uniformly introduced into the polyester fiber, meanwhile, the original physical performance of the fiber is kept, the stability of the active component is further kept, the slow release time is prolonged, and the polyester large biological fiber is endowed with more health functions.

Description

Technical Field

[0001] The invention relates to the technical field of fiber manufacturing, and in particular to a polyester large biological fiber containing rose active ingredients and a preparation method thereof. Background Art

[0002] Polyester (polyester fiber) is a widely used synthetic fiber with excellent physical properties, such as good wrinkle resistance, abrasion resistance, elastic recovery and high strength. However, as consumers' requirements for health and environmental protection increase, traditional polyester as a synthetic fiber has relatively poor biocompatibility, and long-term contact with the skin may cause discomfort or allergic reactions, which limits its application in certain high-end textile fields and gradually shows its limitations. Therefore, researchers began to explore the introduction of natural active ingredients into polyester fibers to enhance their functionality, such as antibacterial, antioxidant, and UV resistance.

[0003] Rose is a traditional medicinal plant, and its petals contain a variety of active ingredients, such as vitamin C, polyphenol compounds, aromatic oils and a variety of trace elements. These ingredients have significant antioxidant, antibacterial, anti-inflammatory and beauty and skin care effects. Introducing rose active ingredients into polyester fibers can give the fibers more natural characteristics and health functions, meeting consumers' demand for high-quality textiles.

[0004] Traditional methods make it difficult to ensure uniform distribution of functional ingredients in fibers, resulting in unstable fiber performance; during fiber processing and use, functional ingredients are easily lost from the fibers, affecting the durability of the fibers.

[0005] Based on this, the present invention provides a polyester large biological fiber containing rose active ingredients and a preparation method thereof. Summary of the invention

[0006] The purpose of the present invention is to provide a polyester large biofiber containing rose active ingredients and a preparation method thereof, so as to ensure the uniform distribution of the functional ingredients in the fiber, improve the stability of the activity, and achieve the persistence of the sustained release of the active ingredients.

[0007] On the one hand, the present invention provides a polyester biofiber containing rose active ingredients, the raw materials comprising polyester chips and rose extract microcapsules in a weight ratio of (10-12):(2-3); wherein the preparation method of the rose extract microcapsules comprises: adding tannic acid to a sodium alginate aqueous solution and stirring and mixing to obtain a solution A, adding nano-hydroxyapatite, a calcium chloride / glutaraldehyde composite crosslinking agent, a rose extract and sodium dodecyl sulfate to a chitosan acetic acid aqueous solution and stirring and mixing to obtain a solution B, and mixing and stirring the solution A and the solution B to obtain the rose extract microcapsules.

[0008] Furthermore, the mass fraction of the sodium alginate aqueous solution is 1-2%; the weight ratio of the sodium alginate to tannic acid is (10-12):(2-3).

[0009] Furthermore, when the solution A is obtained by stirring and mixing, the stirring speed is 600-700 r / min, and the stirring time is 1-2 h.

[0010] Furthermore, the mass fraction of the acetic acid aqueous solution is 1-2%; the weight ratio of the chitosan to the acetic acid aqueous solution is (3-4):80.

[0011] Furthermore, the weight ratio of chitosan, nano-hydroxyapatite, calcium chloride, glutaraldehyde, rose extract and sodium dodecyl sulfate is (18-20): (3-4): (5-6): (1-1.5): (12-14): (0.5-1).

[0012] Furthermore, the weight ratio of solution A to solution B is (4-5):(14-16).

[0013] Furthermore, the rotation speed of the solution A and the solution B during mixing and stirring is 500-600 r / min, and the mixing and stirring time is 2-3 h.

[0014] Furthermore, the preparation method of the rose extract comprises: crushing 10-12g of rose petals and adding them to 120-140mL of a 4-5% NaOH solution, stirring at a temperature of 60-70°C for 30-40min, washing with deionized water until the pH value of the washing liquid reaches neutral, drying to constant weight under vacuum at a temperature of 50-60°C, and grinding to obtain a powdered solid, which is the rose extract.

[0015] On the other hand, the present invention also provides a method for preparing polyester large bio-fiber containing rose active ingredients, the steps comprising: evenly mixing polyester polyester chips and rose extract microcapsules, extruding and melting them, spinning them to obtain fibers, and then drawing, oiling, and winding them to obtain the polyester large bio-fiber containing rose active ingredients.

[0016] Furthermore, the extrusion melting temperature is 240-250°C, and the spinning speed is

[0017] 1300-1400m / min.

[0018] The beneficial effects of the present invention are:

[0019] (1) In the present invention, by encapsulating the rose extract in microcapsules, the microencapsulation technology not only protects the rose extract from the direct influence of the external environment, but also ensures its uniform dispersion in the polyester chips; this uniform distribution not only improves the overall functionality of the fiber, but also enables the active ingredients of the rose extract to play a more effective role; the method for preparing rose extract microcapsules provided by the present invention solves the problems of low stability of the microcapsules prepared in the prior art and uneven particle size and distribution of the microcapsules;

[0020] (2) As a material with a multi-layer pore structure, the porous structure of nanohydroxyapatite can significantly enhance the adsorption capacity of rose active ingredients, thereby increasing the drug loading capacity of the microspheres; this means that more rose extracts can be loaded into microspheres of the same volume or weight, thereby improving the functional effect of the fiber; at the same time, the porous structure of nanohydroxyapatite also helps to achieve the sustained release of active ingredients.

[0021] (3) Chitosan and sodium alginate are used as polyelectrolyte materials to form a unique polyelectrolyte composite membrane in the present invention; chitosan has polycationic electrolyte properties, while sodium alginate has polyanionic electrolyte properties; when these two materials are mixed, strong electrostatic interaction occurs between them to form a stable composite membrane structure. This composite membrane not only has good mechanical strength and stability, but also can effectively encapsulate the rose active ingredients to prevent them from leaking or failing during preparation and use.

[0022] (4) In the present invention, calcium chloride / glutaraldehyde is used as a composite cross-linking agent to further enhance the stability of the internal network structure of the microspheres. This composite cross-linking agent can form a strong cross-linking network inside the microspheres and enhance the mechanical strength of the microcapsule shell. This enhanced mechanical strength not only helps prevent the microspheres from disintegrating or deforming during the preparation or storage process, but also can better protect the internal functional components from the influence of the external environment.

[0023] (5) Sodium dodecyl sulfate is added to the preparation process as an effective dispersant. It can significantly improve the dispersibility between the components and prevent agglomeration during the preparation process. This good dispersibility not only helps to achieve the uniformity of the microspheres, but also prevents the instability of the microsphere structure caused by excessive size. At the same time, appropriate dispersibility can also ensure the uniform distribution of the microspheres in the fiber, thereby improving the overall functional effect of the fiber. In addition, the addition of sodium dodecyl sulfate also helps to improve the surface properties of the microspheres, making them easier to combine with other materials.

[0024] (6) The present invention adopts a multiple dispersion and mixing method to ensure the full mixing and uniform distribution of the components. Through multiple dispersion and mixing operations, the interfacial tension between the components can be broken, and the interaction and fusion between them can be promoted; this multiple dispersion and mixing method not only helps to reduce the occurrence of agglomeration, but also can improve the preparation efficiency and product quality of microcapsules; at the same time, it can also ensure the uniform distribution and stable performance of microcapsules in the fiber, providing a strong guarantee for the preparation of high-quality functional fibers. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] All raw materials not specified in the following examples are commercially available, among which Staphylococcus aureus was purchased from Shanghai Luwei Technology Co., Ltd., and Escherichia coli was purchased from Shanghai Luwei Technology Co., Ltd.

[0027] Example 1

[0028] This embodiment provides a polyester biofiber containing rose active ingredients, the raw materials comprising polyester chips and rose extract microcapsules in a weight ratio of 11:2.5;

[0029] The method for preparing the polyester large biofiber containing rose active ingredients comprises the following steps:

[0030] (1) Preparation of rose extract: 11 g of rose petals were crushed and added to 130 mL of 4.5% NaOH solution, stirred at 65° C. for 35 min, washed with deionized water until the pH value of the washing solution reached neutral, dried under vacuum at 55° C. to constant weight, and ground to obtain a powdery solid, i.e., the rose extract;

[0031] (2) Preparation of rose extract microcapsules: A sodium alginate aqueous solution with a mass fraction of 1.5% was prepared, and tannic acid was added thereto and stirred to obtain a mixed solution A, wherein the weight ratio of the sodium alginate to the tannic acid was 11:2.5; the stirring speed was 650 r / min, and the stirring time was 1.5 h; chitosan was added to an acetic acid aqueous solution with a mass fraction of 1.5%, and the chitosan acetic acid solution was obtained by stirring and dissolving, wherein the weight ratio of the chitosan to the acetic acid aqueous solution was 3.5:80; nano-hydroxyapatite and chloride were added thereto; Calcium / glutaraldehyde composite crosslinking agent, rose extract and sodium dodecyl sulfate, wherein the weight ratio of chitosan, nano-hydroxyapatite, calcium chloride, glutaraldehyde, rose extract and sodium dodecyl sulfate is 19:3.5:5.5:1.2:13:0.7, stirring and mixing uniformly to obtain solution B, the stirring speed is 550r / min, and the stirring time is 3.5h; solution A and solution B with a weight ratio of 4.5:15 are mixed, and stirred at a speed of 550r / min for 2.5h to obtain;

[0032] (3) Preparation of polyester biofiber containing rose active ingredients: After polyester polyester chips and rose extract microcapsules are evenly mixed, they are extruded and melted, and then spun to obtain fibers, which are then stretched, oiled, and wound to obtain polyester biofiber containing rose active ingredients; wherein the extrusion melting temperature is 245°C and the spinning speed is 1350 m / min.

[0033] Example 2

[0034] This embodiment provides a polyester biofiber containing rose active ingredients, the raw materials comprising polyester chips and rose extract microcapsules in a weight ratio of 5:1;

[0035] The method for preparing the polyester large biofiber containing rose active ingredients comprises the following steps:

[0036] (1) Preparation of rose extract: 10 g of rose petals were crushed and added to 120 mL of 4% NaOH solution, stirred at 60° C. for 300 min, washed with deionized water until the pH value of the washing solution reached neutral, dried under vacuum at 50° C. to constant weight, and ground to obtain a powdered solid, i.e., the rose extract;

[0037] (2) Preparation of rose extract microcapsules: A sodium alginate aqueous solution with a mass fraction of 1% was prepared, and tannic acid was added thereto and stirred to obtain a mixed solution A, wherein the weight ratio of the sodium alginate to the tannic acid was 5:1; the stirring speed was 600 r / min, and the stirring time was 1 h; chitosan was added to an acetic acid aqueous solution with a mass fraction of 1%, and stirred to dissolve to obtain a chitosan acetic acid solution, wherein the weight ratio of the chitosan to the acetic acid aqueous solution was 3:80; nano-hydroxyapatite and chloride were added thereto; Calcium / glutaraldehyde composite crosslinking agent, rose extract and sodium dodecyl sulfate, wherein the weight ratio of chitosan, nano-hydroxyapatite, calcium chloride, glutaraldehyde, rose extract and sodium dodecyl sulfate is 18:3:5:1:12:0.5, stirring and mixing uniformly to obtain solution B, the stirring speed is 500r / min, and the stirring time is 3h; solution A and solution B in a weight ratio of 4:14 are mixed, and stirred at a speed of 500r / min for 2h to obtain;

[0038] (3) Preparation of polyester biofiber containing rose active ingredients: After polyester polyester chips and rose extract microcapsules are evenly mixed, they are extruded and melted, and then spun to obtain fibers, which are then drawn, oiled, and wound to obtain polyester biofiber containing rose active ingredients; wherein the extrusion melting temperature is 240°C and the spinning speed is 1300 m / min.

[0039] Example 3

[0040] This embodiment provides a polyester biofiber containing rose active ingredients, the raw materials comprising polyester chips and rose extract microcapsules in a weight ratio of 4:1;

[0041] The method for preparing the polyester large biofiber containing rose active ingredients comprises the following steps:

[0042] (1) Preparation of rose extract: 12 g of rose petals were crushed and added to 140 mL of 5% NaOH solution, stirred at 70° C. for 40 min, washed with deionized water until the pH value of the washing solution reached neutral, dried under vacuum at 60° C. to constant weight, and ground to obtain a powdered solid, i.e., the rose extract;

[0043] (2) Preparation of rose extract microcapsules: Prepare a sodium alginate aqueous solution with a mass fraction of 2%, and add tannic acid thereto and stir to obtain a mixed solution A, wherein the weight ratio of the sodium alginate to the tannic acid is 4:1; the stirring speed is 700 r / min, and the stirring time is 2 h; chitosan is added to an acetic acid aqueous solution with a mass fraction of 2%, and stirred to dissolve to obtain a chitosan acetic acid solution, wherein the weight ratio of the chitosan to the acetic acid aqueous solution is 4:80; nano-hydroxyapatite and chloride are added thereto; Calcium / glutaraldehyde composite crosslinking agent, rose extract and sodium dodecyl sulfate, wherein the weight ratio of chitosan, nano-hydroxyapatite, calcium chloride, glutaraldehyde, rose extract and sodium dodecyl sulfate is 20:4:6:1.5:14:1, stirring and mixing uniformly to obtain solution B, the stirring speed is 600r / min, and the stirring time is 4h; solution A and solution B in a weight ratio of 5:16 are mixed, and stirred at a speed of 600r / min for 3h to obtain the solution;

[0044] (3) Preparation of polyester biofiber containing rose active ingredients: After polyester polyester chips and rose extract microcapsules are evenly mixed, they are extruded and melted, and then spun to obtain fibers, which are then drawn, oiled, and wound to obtain polyester biofiber containing rose active ingredients; wherein the extrusion melting temperature is 250°C and the spinning speed is 1400 m / min.

[0045] Example 4

[0046] This embodiment provides a polyester biofiber containing rose active ingredients, the raw materials comprising polyester chips and rose extract microcapsules in a weight ratio of 10:3;

[0047] The method for preparing the polyester large biofiber containing rose active ingredients comprises the following steps:

[0048] (1) Preparation of rose extract: 10 g of rose petals were crushed and added to 140 mL of 4% NaOH solution, stirred at 70° C. for 30 min, washed with deionized water until the pH value of the washing solution reached neutral, dried under vacuum at 60° C. to constant weight, and ground to obtain a powdered solid, i.e., the rose extract;

[0049] (2) Preparation of rose extract microcapsules: Prepare a sodium alginate aqueous solution with a mass fraction of 1%, add tannic acid thereto and stir to obtain a mixed solution A, wherein the weight ratio of the sodium alginate to the tannic acid is 6:1; the stirring speed is 700 r / min, and the stirring time is 1 h; chitosan is added to an acetic acid aqueous solution with a mass fraction of 2%, stirred and dissolved to obtain a chitosan acetic acid solution, wherein the weight ratio of the chitosan to the acetic acid aqueous solution is 3:80; nano-hydroxyapatite and chloride are added thereto; Calcium / glutaraldehyde composite crosslinking agent, rose extract and sodium dodecyl sulfate, wherein the weight ratio of chitosan, nano-hydroxyapatite, calcium chloride, glutaraldehyde, rose extract and sodium dodecyl sulfate is 20:3:6:1:14:0.5, stirring and mixing uniformly to obtain solution B, the stirring speed is 600r / min, and the stirring time is 3h; solution A and solution B in a weight ratio of 5:14 are mixed, and stirred at a speed of 600r / min for 2h to obtain the solution;

[0050] (3) Preparation of polyester biofiber containing rose active ingredients: After polyester polyester chips and rose extract microcapsules are evenly mixed, they are extruded and melted, and then spun to obtain fibers, which are then drawn, oiled, and wound to obtain polyester biofiber containing rose active ingredients; wherein the extrusion melting temperature is 250°C and the spinning speed is 1300 m / min.

[0051] Comparative Example 1

[0052] This comparative example provides a polyester biofiber containing rose active ingredients, the raw materials comprising polyester chips and rose extract microcapsules in a weight ratio of 11:2.5;

[0053] The method for preparing the polyester large biofiber containing rose active ingredients comprises the following steps:

[0054] (1) Preparation of rose extract: 11 g of rose petals were crushed and added to 130 mL of anhydrous ethanol, stirred at 65° C. for 35 min, washed with deionized water, dried under vacuum at 55° C. to constant weight, and ground to obtain a powdery solid, i.e., the rose extract;

[0055] (2) Preparation of rose extract microcapsules: A sodium alginate aqueous solution with a mass fraction of 1.5% was prepared, and tannic acid was added thereto and stirred to obtain a mixed solution A, wherein the weight ratio of the sodium alginate to the tannic acid was 11:2.5; the stirring speed was 650 r / min, and the stirring time was 1.5 h; chitosan was added to an acetic acid aqueous solution with a mass fraction of 1.5%, and the chitosan acetic acid solution was obtained by stirring and dissolving, wherein the weight ratio of the chitosan to the acetic acid aqueous solution was 3.5:80; nano-hydroxyapatite and chloride were added thereto; Calcium / glutaraldehyde composite crosslinking agent, rose extract and sodium dodecyl sulfate, wherein the weight ratio of chitosan, nano-hydroxyapatite, calcium chloride, glutaraldehyde, rose extract and sodium dodecyl sulfate is 19:3.5:5.5:1.2:13:0.7, stirring and mixing uniformly to obtain solution B, the stirring speed is 550r / min, and the stirring time is 3.5h; solution A and solution B with a weight ratio of 4.5:15 are mixed, and stirred at a speed of 550r / min for 2.5h to obtain;

[0056] (3) Preparation of polyester biofiber containing rose active ingredients: After polyester polyester chips and rose extract microcapsules are evenly mixed, they are extruded and melted, and then spun to obtain fibers, which are then stretched, oiled, and wound to obtain polyester biofiber containing rose active ingredients; wherein the extrusion melting temperature is 245°C and the spinning speed is 1350 m / min.

[0057] Comparative Example 2

[0058] This comparative example provides a polyester biofiber containing rose active ingredients, the raw materials comprising polyester chips and rose extract microcapsules in a weight ratio of 11:2.5;

[0059] The method for preparing the polyester large biofiber containing rose active ingredients comprises the following steps:

[0060] (1) Preparation of rose extract: 11 g of rose petals were crushed and added into 130 mL of water, stirred at 65° C. for 35 min, washed with deionized water, dried under vacuum at 55° C. to constant weight, and ground into a powdery solid, i.e., the rose extract;

[0061] (2) Preparation of rose extract microcapsules: A sodium alginate aqueous solution with a mass fraction of 1.5% was prepared, and tannic acid was added thereto and stirred to obtain a mixed solution A, wherein the weight ratio of the sodium alginate to the tannic acid was 11:2.5; the stirring speed was 650 r / min, and the stirring time was 1.5 h; chitosan was added to an acetic acid aqueous solution with a mass fraction of 1.5%, and the chitosan acetic acid solution was obtained by stirring and dissolving, wherein the weight ratio of the chitosan to the acetic acid aqueous solution was 3.5:80; nano-hydroxyapatite and chloride were added thereto; Calcium / glutaraldehyde composite crosslinking agent, rose extract and sodium dodecyl sulfate, wherein the weight ratio of chitosan, nano-hydroxyapatite, calcium chloride, glutaraldehyde, rose extract and sodium dodecyl sulfate is 19:3.5:5.5:1.2:13:0.7, stirring and mixing uniformly to obtain solution B, the stirring speed is 550r / min, and the stirring time is 3.5h; solution A and solution B with a weight ratio of 4.5:15 are mixed, and stirred at a speed of 550r / min for 2.5h to obtain;

[0062] (3) Preparation of polyester biofiber containing rose active ingredients: After polyester polyester chips and rose extract microcapsules are evenly mixed, they are extruded and melted, and then spun to obtain fibers, which are then stretched, oiled, and wound to obtain polyester biofiber containing rose active ingredients; wherein the extrusion melting temperature is 245°C and the spinning speed is 1350 m / min.

[0063] Comparative Example 3

[0064] This comparative example provides a polyester biofiber containing rose active ingredients, the raw materials comprising polyester chips and rose extract microcapsules in a weight ratio of 11:2.5;

[0065] The method for preparing the polyester large biofiber containing rose active ingredients comprises the following steps:

[0066] (1) Preparation of rose extract: 11 g of rose petals were crushed and added to 130 mL of 4.5% NaOH solution, stirred at 65° C. for 35 min, washed with deionized water until the pH value of the washing solution reached neutral, dried under vacuum at 55° C. to constant weight, and ground to obtain a powdery solid, i.e., the rose extract;

[0067] (2) Preparation of rose extract microcapsules: A sodium alginate aqueous solution with a mass fraction of 1.5% was prepared, and tannic acid was added thereto and stirred to obtain a mixed solution A, wherein the weight ratio of the sodium alginate to the tannic acid was 11:2.5; the stirring speed was 650 r / min, and the stirring time was 1.5 h; chitosan was added to an acetic acid aqueous solution with a mass fraction of 1.5%, and the chitosan acetic acid solution was obtained by stirring and dissolving, wherein the weight ratio of the chitosan to the acetic acid aqueous solution was 3.5:80; nanoparticles were added thereto Hydroxyapatite, calcium chloride, rose extract and sodium dodecyl sulfate, wherein the weight ratio of chitosan, nano-hydroxyapatite, calcium chloride, rose extract and sodium dodecyl sulfate is 19:3.5:5.5:13:0.7, stirring and mixing uniformly to obtain solution B, the stirring speed is 550r / min, and the stirring time is 3.5h; mixing solution A and solution B in a weight ratio of 4.5:15, stirring at a speed of 550r / min for 2.5h to obtain;

[0068] (3) Preparation of polyester biofiber containing rose active ingredients: After polyester polyester chips and rose extract microcapsules are evenly mixed, they are extruded and melted, and then spun to obtain fibers, which are then stretched, oiled, and wound to obtain polyester biofiber containing rose active ingredients; wherein the extrusion melting temperature is 245°C and the spinning speed is 1350 m / min.

[0069] Comparative Example 4

[0070] This comparative example provides a polyester biofiber containing rose active ingredients, the raw materials comprising polyester chips and rose extract microcapsules in a weight ratio of 11:2.5;

[0071] The method for preparing the polyester large biofiber containing rose active ingredients comprises the following steps:

[0072] (1) Preparation of rose extract: 11 g of rose petals were crushed and added to 130 mL of 4.5% NaOH solution, stirred at 65° C. for 35 min, washed with deionized water until the pH value of the washing solution reached neutral, dried under vacuum at 55° C. to constant weight, and ground to obtain a powdery solid, i.e., the rose extract;

[0073] (2) Preparation of rose extract microcapsules: A sodium alginate aqueous solution with a mass fraction of 1.5% was prepared, and tannic acid was added thereto and stirred to obtain a mixed solution A, wherein the weight ratio of the sodium alginate to the tannic acid was 11:2.5; the stirring speed was 650 r / min, and the stirring time was 1.5 h; chitosan was added to an acetic acid aqueous solution with a mass fraction of 1.5%, and the chitosan acetic acid solution was obtained by stirring and dissolving, wherein the weight ratio of the chitosan to the acetic acid aqueous solution was 3.5:80; nanoparticles were added thereto Hydroxyapatite, glutaraldehyde, rose extract and sodium dodecyl sulfate, wherein the weight ratio of chitosan, nano-hydroxyapatite, glutaraldehyde, rose extract and sodium dodecyl sulfate is 19:3.5:1.2:13:0.7, stirring and mixing uniformly to obtain solution B, the stirring speed is 550r / min, and the stirring time is 3.5h; mixing solution A and solution B in a weight ratio of 4.5:15, stirring at a speed of 550r / min for 2.5h to obtain;

[0074] (3) Preparation of polyester biofiber containing rose active ingredients: After polyester polyester chips and rose extract microcapsules are evenly mixed, they are extruded and melted, and then spun to obtain fibers, which are then stretched, oiled, and wound to obtain polyester biofiber containing rose active ingredients; wherein the extrusion melting temperature is 245°C and the spinning speed is 1350 m / min.

[0075] Comparative Example 5

[0076] This comparative example provides a polyester biofiber containing rose active ingredients, the raw materials comprising polyester chips and rose extract microcapsules in a weight ratio of 11:2.5;

[0077] The method for preparing the polyester large biofiber containing rose active ingredients comprises the following steps:

[0078] (1) Preparation of rose extract: 11 g of rose petals were crushed and added to 130 mL of 4.5% NaOH solution, stirred at 65° C. for 35 min, washed with deionized water until the pH value of the washing solution reached neutral, dried under vacuum at 55° C. to constant weight, and ground to obtain a powdery solid, i.e., the rose extract;

[0079] (2) Preparation of rose extract microcapsules: Prepare a sodium alginate aqueous solution with a mass fraction of 1.5%, and add tannic acid thereto and stir to obtain a mixed solution A, wherein the weight ratio of sodium alginate to tannic acid is 11:2.5; the stirring speed is 650 r / min, and the stirring time is 1.5 h; chitosan is added to an acetic acid aqueous solution with a mass fraction of 1.5%, and stirred to dissolve to obtain a chitosan acetic acid solution, wherein the weight ratio of chitosan to the acetic acid aqueous solution is 3.5:80; nano-hydroxyapatite, rose extract and sodium dodecyl sulfate are added thereto, wherein the weight ratio of chitosan, nano-hydroxyapatite, rose extract and sodium dodecyl sulfate is 19:3.5:13:0.7, and stir to mix uniformly to obtain a solution B, the stirring speed is 550 r / min, and the stirring time is 3.5 h; solution A and solution B with a weight ratio of 4.5:15 are mixed, and stirred at a speed of 550 r / min for 2.5 h to obtain the obtained solution;

[0080] (3) Preparation of polyester biofiber containing rose active ingredients: After polyester polyester chips and rose extract microcapsules are evenly mixed, they are extruded and melted, and then spun to obtain fibers, which are then stretched, oiled, and wound to obtain polyester biofiber containing rose active ingredients; wherein the extrusion melting temperature is 245°C and the spinning speed is 1350 m / min.

[0081] Comparative Example 6

[0082] This comparative example provides a polyester biofiber containing rose active ingredients, the raw materials comprising polyester chips and rose extract microcapsules in a weight ratio of 11:2.5;

[0083] The method for preparing the polyester large biofiber containing rose active ingredients comprises the following steps:

[0084] (1) Preparation of rose extract: 11 g of rose petals were crushed and added to 130 mL of 4.5% NaOH solution, stirred at 65° C. for 35 min, washed with deionized water until the pH value of the washing solution reached neutral, dried under vacuum at 55° C. to constant weight, and ground to obtain a powdery solid, i.e., the rose extract;

[0085] (2) Preparation of rose extract microcapsules: Prepare a sodium alginate aqueous solution with a mass fraction of 1.5%, add tannic acid thereto and stir to obtain a mixed solution A, wherein the weight ratio of the sodium alginate to the tannic acid is 11:2.5; the stirring speed is 650 r / min, and the stirring time is 1.5 h; add chitosan to an acetic acid aqueous solution with a mass fraction of 1.5%, stir and dissolve to obtain a chitosan acetic acid solution, wherein the weight ratio of the chitosan to the acetic acid aqueous solution is 3.5:80; add Nano-hydroxyapatite, calcium chloride / glutaraldehyde composite crosslinking agent, rose extract, wherein the weight ratio of chitosan, nano-hydroxyapatite, calcium chloride, glutaraldehyde, and rose extract is 19:3.5:5.5:1.2:13, stirring and mixing uniformly to obtain solution B, the stirring speed is 550r / min, and the stirring time is 3.5h; solution A and solution B in a weight ratio of 4.5:15 are mixed, and stirred at a speed of 550r / min for 2.5h to obtain the solution;

[0086] (3) Preparation of polyester biofiber containing rose active ingredients: After polyester polyester chips and rose extract microcapsules are evenly mixed, they are extruded and melted, and then spun to obtain fibers, which are then stretched, oiled, and wound to obtain polyester biofiber containing rose active ingredients; wherein the extrusion melting temperature is 245°C and the spinning speed is 1350 m / min.

[0087] Comparative Example 7

[0088] This comparative example provides a polyester biofiber containing rose active ingredients, the raw materials comprising polyester chips and rose extract microcapsules in a weight ratio of 11:2.5;

[0089] The method for preparing the polyester large biofiber containing rose active ingredients comprises the following steps:

[0090] (1) Preparation of rose extract: 11 g of rose petals were crushed and added to 130 mL of 4.5% NaOH solution, stirred at 65° C. for 35 min, washed with deionized water until the pH value of the washing solution reached neutral, dried under vacuum at 55° C. to constant weight, and ground to obtain a powdery solid, i.e., the rose extract;

[0091] (2) Preparation of rose extract microcapsules: A sodium alginate aqueous solution with a mass fraction of 1.5% was prepared, and tannic acid was added thereto and stirred to obtain a mixed solution A, wherein the weight ratio of sodium alginate to tannic acid was 11:2.5; the stirring speed was 650 r / min, and the stirring time was 1.5 h; then nano-hydroxyapatite, calcium chloride / glutaraldehyde composite crosslinking agent, rose extract and sodium dodecyl sulfate were added thereto, wherein the weight ratio of nano-hydroxyapatite, calcium chloride, glutaraldehyde, rose extract and sodium dodecyl sulfate was 3.5:5.5:1.2:13:0.7, and the mixture was stirred to obtain a solution B, the stirring speed was 550 r / min, and the stirring time was 3.5 h; solution A and solution B with a weight ratio of 4.5:15 were mixed, and stirred at a speed of 550 r / min for 2.5 h to obtain the microcapsules;

[0092] (3) Preparation of polyester biofiber containing rose active ingredients: After polyester polyester chips and rose extract microcapsules are evenly mixed, they are extruded and melted, and then spun to obtain fibers, which are then stretched, oiled, and wound to obtain polyester biofiber containing rose active ingredients; wherein the extrusion melting temperature is 245°C and the spinning speed is 1350 m / min.

[0093] Comparative Example 8

[0094] This comparative example provides a polyester biofiber containing rose active ingredients, the raw materials comprising polyester chips and rose extract microcapsules in a weight ratio of 11:2.5;

[0095] The method for preparing the polyester large biofiber containing rose active ingredients comprises the following steps:

[0096] (1) Preparation of rose extract: 11 g of rose petals were crushed and added to 130 mL of 4.5% NaOH solution, stirred at 65° C. for 35 min, washed with deionized water until the pH value of the washing solution reached neutral, dried under vacuum at 55° C. to constant weight, and ground to obtain a powdery solid, i.e., the rose extract;

[0097] (2) Preparation of rose extract microcapsules: Prepare a sodium alginate aqueous solution with a mass fraction of 1.5%, add tannic acid thereto and stir to obtain a mixed solution A, wherein the weight ratio of the sodium alginate to the tannic acid is 11:2.5; the stirring speed is 650 r / min, and the stirring time is 1.5 h; add chitosan to an acetic acid aqueous solution with a mass fraction of 1.5%, stir and dissolve to obtain a chitosan acetic acid solution, wherein the weight ratio of the chitosan to the acetic acid aqueous solution is 3.5:80; add Calcium chloride / glutaraldehyde composite crosslinking agent, rose extract and sodium dodecyl sulfate, wherein the weight ratio of chitosan, calcium chloride, glutaraldehyde, rose extract and sodium dodecyl sulfate is 19:5.5:1.2:13:0.7, stirring and mixing evenly to obtain solution B, the stirring speed is 550r / min, and the stirring time is 3.5h; mixing solution A and solution B in a weight ratio of 4.5:15, stirring at a speed of 550r / min for 2.5h to obtain;

[0098] (3) Preparation of polyester biofiber containing rose active ingredients: After polyester polyester chips and rose extract microcapsules are evenly mixed, they are extruded and melted, and then spun to obtain fibers, which are then stretched, oiled, and wound to obtain polyester biofiber containing rose active ingredients; wherein the extrusion melting temperature is 245°C and the spinning speed is 1350 m / min.

[0099] Test Example: The performance of the polyester large biofiber containing rose active ingredients prepared in the above-mentioned Examples 1-4 and Comparative Examples 1-8 was explored, and the prepared polyester large biofiber containing rose active ingredients was tested as follows:

[0100] Mechanical properties test: The test method is based on GB / T 14344. No less than 30 test specimens are tested and the average test value is taken.

[0101] Antibacterial performance test: According to the method in GB / T20944.3-2008, the inhibition rate of each polyester bio-fiber containing rose active ingredients on Staphylococcus aureus and Escherichia coli was tested, and the inhibition rate on Staphylococcus aureus, Escherichia coli and Candida albicans was tested after washing 50 times and 100 times.

[0102] The test results are shown in Tables 1 and 2 below:

[0103] Table 1

[0104]

[0105] Table 2

[0106]

[0107]

[0108] The polyester large biofiber containing rose active ingredients prepared in the above embodiments has a dry breaking strength of 6.1-6.5 cN / tex, a dry breaking elongation of 55-62%, and an antibacterial rate of up to 96%. The antibacterial rate is not less than 90% after 50 washings, and the antibacterial rate is not less than 86% after 100 washings, with excellent antibacterial performance and antibacterial retention performance.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A polyester biofiber containing rose active ingredients, characterized in that: The raw materials include polyester chips and rose extract microcapsules in a weight ratio of (10-12):(2-3); wherein the preparation method of the rose extract microcapsules includes: adding tannic acid to a sodium alginate aqueous solution and stirring and mixing to obtain a solution A; adding nano-hydroxyapatite, a calcium chloride / glutaraldehyde composite crosslinking agent, a rose extract and sodium dodecyl sulfate to a chitosan acetic acid aqueous solution and stirring and mixing to obtain a solution B; and mixing and stirring the solution A and the solution B to obtain the rose extract microcapsules.

2. The polyester large biological fiber containing rose active ingredients according to claim 1, characterized in that: The mass fraction of the sodium alginate aqueous solution is 1-2%; the weight ratio of the sodium alginate to tannic acid is (10-12):(2-3).

3. The polyester large biological fiber containing rose active ingredients according to claim 1, characterized in that: When the solution A is obtained by stirring and mixing, the stirring speed is 600-700 r / min, and the stirring time is 1-2 h.

4. The polyester large biological fiber containing rose active ingredients according to claim 1, characterized in that: The mass fraction of the acetic acid aqueous solution is 1-2%; the weight ratio of the chitosan to the acetic acid aqueous solution is (3-4):

80.

5. The polyester biofiber containing rose active ingredients according to claim 1, characterized in that: The weight ratio of the chitosan, nano-hydroxyapatite, calcium chloride, glutaraldehyde, rose extract and sodium dodecyl sulfate is (18-20): (3-4): (5-6): (1-1.5): (12-14): (0.5-1).

6. The polyester large biological fiber containing rose active ingredients according to claim 1, characterized in that: The weight ratio of solution A to solution B is (4-5):(14-16).

7. The polyester large biofiber containing rose active ingredients according to claim 1, characterized in that: The solution A and the solution B are mixed and stirred at a rotation speed of 500-600 r / min, and the mixing and stirring time is 2-3 h.

8. The polyester biofiber containing rose active ingredients according to claim 1, characterized in that: The preparation method of the rose extract comprises: crushing 10-12g of rose petals and adding them into 120-140mL of a 4-5% NaOH solution, stirring at a temperature of 60-70°C for 30-40min, washing with deionized water until the pH value of the washing solution reaches neutral, drying to constant weight under vacuum at a temperature of 50-60°C, and grinding to obtain a powdered solid, which is the rose extract.

9. A method for preparing a polyester biofiber containing rose active ingredients as claimed in any one of claims 1 to 8, characterized in that the steps include: The polyester chips and rose extract microcapsules are mixed evenly, extruded and melted, and then spun to obtain fibers, which are then drawn, oiled, and wound to obtain polyester macro-biofibers containing rose active ingredients.

10. The method for preparing the polyester large biofiber containing rose active ingredients according to claim 9, characterized in that: The extrusion melting temperature is 240-250° C., and the spinning speed is 1300-1400 m / min.

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