Preparation process of hyaluronic acid moisturizing aromatic polyester cotton blended fabric

Abstract

The invention discloses a preparation process of a hyaluronic acid moisturizing aromatic polyester cotton blended fabric, and relates to the technical field of textile fabric preparation, and the preparation process comprises the following steps: (1) mixing polyester and cotton fibers, and weaving to obtain a blended fabric; (2) preparing a hyaluronic acid moisturizing aromatic capsule finishing agent; and (3) carrying out heat setting, drying, cross-linking and curing to obtain the moisture-retention aromatic polyester-cotton blended fabric. The prepared hyaluronic acid moisturizing aromatic polyester-cotton blended fabric can supplement water for human skin and moisturize the skin, not only can provide long-term slow-release moisturizing factors, but also has a lasting aromatic effect, and has a wide application prospect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textile fabrics, in particular to a preparation process of hyaluronic acid moisturizing aromatic polyester-cotton blended fabric. BACKGROUND

[0002] Polyester fibers have the advantages of good strength and not easy to deform, but its hygroscopicity is poor, while cotton fibers have the advantages of softness, heat preservation and good hygroscopicity, but its strength is insufficient. The polyester-cotton fabric is processed by blending polyester and cotton, so that it has the double advantages of polyester and cotton fibers, has good hygroscopicity, air permeability and wear resistance, and is very suitable for skin-friendly fabrics. In recent years, with the improvement of people's living standards, the needs of the clothing market are also undergoing tremendous changes. In order to meet the needs of wearing light and comfortable, functional and different regional climate, when the clothing fabric meets the basic light, soft, smooth and vertical requirements, the personalization and functionalization requirements are becoming higher and higher. The pursuit of natural, comfortable, beautiful, convenient care and health care functions has gradually become the goal of people. These factors promote and drive the development of textile fiber raw materials and clothing fabrics.

[0003] Hyaluronic acid is one of the most hydrophilic molecules in nature, which has many benefits to the human body, can improve skin nutrient metabolism, make the skin tender, smooth, wrinkle-free, increase elasticity, prevent aging, and is a good transdermal absorption promoter while moisturizing, and is called "natural moisturizing agent". Although hyaluronic acid itself exists in large quantities in the skin, the content will change with the process of human skin maturation and aging. Whether it is the increase of their own age, environmental pollution, high life pressure, lack of sleep, strong alkaline of washing products and other factors, or some self-caused skin moisturizing factor reduction, all of which will affect the normal barrier function of the skin and make the skin dry. Therefore, a hyaluronic acid-containing moisturizing textile is developed to gradually improve the dry skin problems of the wearer through daily wear, especially for patients with dry skin. At the same time, modern people have high work pressure and fast-paced life, and generally have sub-health status. The aromatic plant extract and hyaluronic acid are organically compounded together and applied to the fabric, which can relieve stress, make the body and mind harmonious, the spirit happy, and beneficial to the health of the body. The aromatic fabric and preparation process of CN116638837A obtain a gel layer by dipping a fragrance finishing agent and a calcium chloride solution; it not only can relieve stress by releasing fragrance, but also sometimes has the effects of treating diseases and fragrance.

[0004] For the application of hyaluronic acid on textiles, CHENGSY et al. showed through experiments that skin care type textiles can enhance the regeneration of cells in the human skin structure, thereby improving the skin condition; YI J W et al. confirmed the skin care performance through single dose patch test and skin barrier function recovery test; scholars of Zhejiang University of Technology selected CWS type vitamin E microcapsule as the skin care finishing agent for silk fabric by comparing the comprehensive performance of the finished fabric, and obtained the suitable microcapsule skin care finishing process and formula for silk fabric. Foreign research on textiles with skin care function using hyaluronic acid is relatively more, and domestic research is more focused on the wearability of textiles treated with moisture-retaining materials or finishing agents, and the research on the functional relationship between such textiles and human skin is relatively less.

[0005] Skin care type textiles also have a very large exploration space, and more experimental tests are needed to verify the influence of textiles on human skin, thereby providing consumers with certain skin care requirements with the possibility of comprehensive body care, and developing textiles with health benefits for human skin. How to provide water to the skin through the fabric, keep the skin moist, and have multiple functions become a technical problem to be solved by those skilled in the art. SUMMARY

[0006] The purpose of the present application is to overcome the shortcomings of the prior art and provide a hyaluronic acid-containing moisture-retaining aromatic polyester-cotton fabric that has a soft and comfortable hand feel, provides certain fragrance and antistatic functions, and can provide long-lasting and slow-release moisturizing effect.

[0007] To achieve the purpose of the present application, the technical scheme adopted is:

[0008] A preparation process of a hyaluronic acid moisture-retaining aromatic polyester-cotton blended fabric, characterized in that it comprises the following steps:

[0009] (1) Preparation of polyester-cotton blended fabric:

[0010] Mixing polyester and cotton fibers in a certain proportion, then blending and weaving to form a polyester-cotton blended fabric, then performing alkali reduction treatment, washing and drying;

[0011] (2) Preparation of hyaluronic acid moisture-retaining aromatic microcapsule finishing agent:

[0012] Add the fragrance and hyaluronic acid to the water solution containing surfactant, ultrasonic emulsification to obtain capsule core emulsion, then add chitosan as capsule shell wall, heat to 60-70 DEG C and fully stir for 1-2 h, prepare microcapsule emulsion, finally add water-based adhesive and mix, stir for 1-2 h, prepare hyaluronic acid moisture-retaining aromatic microcapsule finishing agent;

[0013] (3) preparing hyaluronic acid moisturizing fragrance polyester cotton blended fabric:

[0014] The prepared hyaluronic acid moisturizing fragrance microcapsule finishing agent is configured into a finishing liquid, and then the polyester cotton blended fabric is padded in the finishing liquid, and then dried to obtain the hyaluronic acid moisturizing fragrance polyester cotton blended fabric.

[0015] Further provided are:

[0016] In the step (1), the polyester fiber and the cotton fiber are blended at 35-65 / 35-65 to prepare the polyester cotton blended fabric.

[0017] In the step (1), the alkali reduction treatment of the polyester cotton blended fabric is treated by using a mixed alkali solution, the concentration of the mixed alkali solution is 6 g / L, the treatment temperature is 70°C, and the treatment time is 5 min; the mixed alkali is composed of a strong alkali and an alkaline salt, and the mass ratio of the strong alkali to the alkaline salt is 3:1; the strong alkali is sodium hydroxide, and the alkaline salt is any one of sodium bicarbonate and sodium carbonate.

[0018] In the step (2), the weight ratio of the fragrance, the hyaluronic acid, the chitosan and the water-based adhesive is 1:1.5-2:1.5-2:3-5.

[0019] In the step (2), the surfactant is a complex of an anionic surfactant and a non-ionic surfactant, and the amount used is 6-8% of the total weight of the fragrance, the hyaluronic acid and the chitosan. The surfactant is preferably a complex of a non-ionic emulsifier Tween 80 and an anionic emulsifier sodium dodecyl sulfate.

[0020] In the step (2), the solid content of the finishing agent is 30-40%.

[0021] In the step (2), the fragrance is a pure natural plant essential oil, which is selected from any one or more of lavender, clove, chrysanthemum, wormwood and rosemary plant essential oils.

[0022] In the step (2), the water-based adhesive is any one of polyurethane, polyurethane acrylate and silicone-modified polyurethane, and is preferably silicone-modified polyurethane.

[0023] The organic silicon modified polyurethane is prepared by the following method: a mixture of acrylic monomer, initiator, catalyst, PDMS, polyurethane precursor and co-stabilizer is added into a surfactant-containing aqueous solution, a bridging agent is added to participate in the free radical polymerization of the acrylate monomer and the addition reaction of the isocyanate group; then the mixture is stirred to obtain a crude emulsion, and then the crude emulsion is subjected to ultrasonic treatment in a cell crusher to obtain a monomer mini-emulsion; finally, the obtained monomer mini-emulsion is stirred for 0.5 h in a nitrogen atmosphere, and then transferred into a three-necked flask, and the mini-emulsion polymerization is carried out under a nitrogen atmosphere at a temperature of 70 DEG C for 6 h to obtain the organic silicon modified polyurethane emulsion.

[0024] Preferably, in the preparation of the organic silicon modified polyurethane, the acrylic monomer is butyl acrylate and styrene, the initiator is azobisisobutyronitrile, the catalyst is dibutyltin dilaurate, the polyurethane precursor is isophorone diisocyanate and polycaprolactone, the co-stabilizer is n-hexadecane, the bridging agent is hydroxyethyl methacrylate, and the surfactant is allyloxy nonylphenol polyoxyethylene ether ammonium sulfate.

[0025] In the step (3), the concentration of the finishing liquid is 30-40 g / L; and the mass ratio of the fabric to the finishing liquid is 1:30.

[0026] In the step (3), the padding mode is two-dip-two-pad; after padding, the pick-up rate of the fabric is 90%; the drying temperature is 80 DEG C, and the drying time is 5 min.

[0027] The working principle of the application is as follows:

[0028] The application prepares a hyaluronic acid moisturizing fragrance microcapsule finishing agent, which encapsulates fragrances in small sealed microcapsules to control the release under specific conditions, is a low-cost method for long-term storage of active ingredients, and can also avoid the influence of environment and all degradation factors.

[0029] The preparation principle of the hyaluronic acid moisturizing fragrance microcapsule finishing agent is as follows: first, a capsule core emulsion with negative charge is prepared, and under the action of positively charged chitosan, electrostatic adsorption occurs, and the first unstable microcapsule with a core-shell structure is formed, and the surface of the microcapsule also shows weak positive charge. At this time, the unstable microcapsule and anionic hyaluronic acid undergo a second electrostatic adsorption of self-assembly. This will use the hyaluronic acid core-shell chitosan to encapsulate essential oils to prepare a microcapsule emulsion. The system is constructed by an emulsion template method and a layer-by-layer self-assembly method, and an organic wall with alternating opposite charges is formed, and a microcapsule with certain strength and high efficiency is produced.

[0030] The alkali reduction process is used to etch the polyester in the polyester-cotton blended fiber, the pits and grooves on the surface of the fiber are completely filled after treatment, and the hyaluronic acid moisturizing fragrance microcapsule finishing agent forms a continuous film on the surface of the polyester, which provides conditions for the multifunctionality of the polyester-cotton blended fabric.

[0031] The low-temperature self-crosslinking water-based adhesive process is used, and the hyaluronic acid moisturizing fragrance microcapsule finishing agent forms a continuous film on the surface of the polyester under low-temperature drying, which provides conditions for avoiding the loss of fragrance caused by high-temperature baking and retaining the long-lasting multifunctionality of the fabric.

[0032] The beneficial effects of the present application are as follows:

[0033] (1) The present application uses microcapsule complex coacervation technology to prepare fragrance hyaluronic acid as the core and chitosan as the shell of the microcapsule emulsion, so that the finishing agent not only obtains multiple functions through contact but also slowly releases specific odors.

[0034] (2) The finishing agent prepared by compounding the present application with high-efficiency low-temperature self-crosslinking adhesive has good affinity with polyester-cotton blended fabric, improves the bonding force between the fabric base layer and the finishing liquid, and makes the hyaluronic acid fragrance microcapsule firmly adsorbed on the fabric base layer, while avoiding the decline of moisturizing and fragrance functions caused by high-temperature baking of the fabric or other factors such as consumer washing.

[0035] (3) The present application forms a plant fragrance essential oil composition as the microcapsule core by compounding different plant fragrance essential oils, which can effectively relieve and regulate emotions, has certain relieving effect and certain fragrance, and the essential oil has pure natural properties and is friendly to the human body.

[0036] The present application is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 The macroscopic image of the hyaluronic acid moisturizing fragrance microcapsule emulsion prepared in Example 1 of the present application.

[0038] Figure 2 The infrared spectrum of the hyaluronic acid moisturizing fragrance microcapsule emulsion prepared in Example 1 of the present application.

[0039] Figure 3 The optical morphology of the hyaluronic acid moisturizing fragrance microcapsule emulsion prepared in Example 1 of the present application.

[0040] Figure 4 The SEM image of the hyaluronic acid moisturizing fragrance microcapsule emulsion prepared in Example 1 of the present application.

[0041] Figure 5 The SEM image of the hyaluronic acid moisturizing fragrance polyester-cotton blended fabric prepared in Example 1 of the present application.

[0042] Figure 6 SEM image of hyaluronic acid moisturizing aromatic polyester-cotton blended fabric prepared in Example 1 after 100 times of washing.

[0043] Figure 7 SEM image of hyaluronic acid moisturizing aromatic polyester-cotton blended fabric prepared in Example 1 after 100 times of abrasion. DETAILED DESCRIPTION

[0044] The following examples further illustrate the present application, which can be more fully understood by those skilled in the art. The following examples do not limit the present application in any way. The raw materials or equipment used in the following examples are commercially available or are known in the art, unless otherwise specified.

[0045] The surfactant is a mixture of non-ionic emulsifier Tween 80 and anionic emulsifier sodium dodecyl sulfate.

[0046] The silicone-modified polyurethane is prepared by the following method: a mixture of 11.4 g of butyl acrylate, 6.1 g of styrene, 0.18 g of azobisisobutyronitrile, 0.05 g of dibutyltin dilaurate, 7.1 g of dihydroxybutyl polydimethylsilane (number average molecular weight 1000 g / mol), 3.3 g of isophorone diisocyanate, 7.1 g of polycaprolactone (number average molecular weight 1000 g / mol), and 1.05 g of n-hexadecane is added to an aqueous solution containing 1.4 g of allyloxy nonylphenol polyoxyethylene ether ammonium sulfate, 0.3 g of hydroxyethyl methacrylate is added as a bridging agent to participate in the free radical polymerization of the acrylate monomer and the addition reaction of the isocyanate group. Then stir to get the crude emulsion, then ultrasonic treatment in a cell crusher to get the monomer miniemulsion. Finally, the obtained monomer miniemulsion is stirred for 0.5 h under nitrogen atmosphere, then transferred to a three-necked flask, kept at 70°C and carried out miniemulsion polymerization under nitrogen environment, the reaction is carried out for 6 h to obtain the silicone-modified polyurethane emulsion.

[0047] Example 1

[0048] (1) Preparation of polyester-cotton blended fabric:

[0049] Mix 35% polyester and 65% cotton fibers, then perform twisting and spinning treatment, finally perform warp-weft interlacing weaving by water jet loom to form polyester-cotton blended fabric, finally mix 3 g of sodium hydroxide and 1 g of sodium bicarbonate to form 6 g / L lye, treat the polyester-cotton blended fabric at 70°C for 5 min, wash to neutral, and dry.

[0050] (2) Preparation of hyaluronic acid moisturizing aromatic microcapsule finishing agent:

[0051] The 1g lavender and 1g rosemary essential oil are added into 18g aqueous solution containing 0.56g Tween 80 and 0.28g sodium dodecyl sulfate to prepare a capsule core emulsion, 4g hyaluronic acid is added to prepare an emulsion, then 6g chitosan is added as a capsule shell wall, heated to 70 DEG C and fully stirred for 2h to prepare a microcapsule emulsion with a solid content of 30%(mass content). Finally, 10g silicone modified polyurethane is added and mixed and stirred for 2h to prepare a hyaluronic acid moisturizing fragrance microcapsule finishing agent.

[0052] In combination Figures 1-4 As shown in the figure: Figure 1 The macro image of the hyaluronic acid moisturizing fragrance microcapsule emulsion prepared by the present application, Figure 2 、 Figure 3 And Figure 4 The infrared characterization, optical microscope and scanning electron microscope of the microcapsule emulsion respectively, the above figures prove the successful preparation of the hyaluronic acid moisturizing fragrance microcapsule emulsion.

[0053] (3) Preparation of hyaluronic acid moisturizing fragrance polyester-cotton blended fabric:

[0054] The hyaluronic acid moisturizing fragrance microcapsule finishing agent prepared in step (2) is configured into a finishing liquid of 30g / L, the bath ratio is controlled to be 1:30, the polyester-cotton blended fabric is immersed and padded in the finishing liquid, and two-dip-two-pad (the liquid rate is 90%) is carried out, and then dried in an oven at 80 DEG C for 5min to prepare a hyaluronic acid moisturizing fragrance polyester-cotton blended fabric.

[0055] The hyaluronic acid moisturizing fragrance polyester-cotton blended fabric prepared by the present application is shown in the figure Figure 5 , and it can be observed that Figure 5 The microcapsules and adhesives are tightly adhered to the fabric, and good friction resistance is obtained.

[0056] Example 2

[0057] (1) Preparation of polyester-cotton blended fabric:

[0058] After mixing 35% polyester and 65% cotton fibers, the twisted spinning treatment is carried out, and finally the warp-weft interlaced weaving is carried out through the water jet loom to form a polyester-cotton blended fabric, and finally 3g of sodium hydroxide and 1g of sodium bicarbonate are mixed to configure an alkali solution of 6g / L, and the blended fabric is treated at 70 DEG C for 5min, washed to neutral, and dried.

[0059] (2) Preparation of hyaluronic acid moisturizing fragrance microcapsule finishing agent:

[0060] The 1 g of lavender and 1 g of rosemary essential oil are added to 39 g of water solution containing 0.78 g of Tween 80 and 0.39 g of sodium dodecyl sulfate to obtain a capsule core emulsion, 6 g of hyaluronic acid is added to emulsify ultrasonically, then 9 g of chitosan is added as a capsule shell wall, heated to 70°C and stirred for 2 h to prepare a microcapsule emulsion with a solid content of 30%, and finally 10 g of silicone modified polyurethane is added and stirred for 2 h to prepare a hyaluronic acid moisturizing and fragrant microcapsule finishing agent.

[0061] (3) Preparation of hyaluronic acid moisturizing and fragrant polyester-cotton blended fabric:

[0062] The above-mentioned hyaluronic acid moisturizing and fragrant microcapsule finishing agent is configured into a finishing liquid of 30 g / L, the bath ratio is 1:30, and then the polyester-cotton blended fabric is immersed and padded in the finishing liquid, double immersion and double padding (with a liquid rate of 90%), and dried in an oven at 80°C for 5 min to prepare a hyaluronic acid moisturizing and fragrant polyester-cotton blended fabric.

[0063] Example 3

[0064] (1) Preparation of polyester-cotton blended fabric:

[0065] After mixing 35% polyester and 65% cotton fibers, a twisting and spinning treatment is performed, and finally a warp-weft interlaced weaving is performed through a water jet loom to form a polyester-cotton blended fabric. Finally, 3 g of sodium hydroxide and 1 g of sodium bicarbonate are mixed to configure an alkali solution of 6 g / L, and the blended fabric is treated at 70°C for 5 min, washed to neutral, and dried.

[0066] (2) Preparation of hyaluronic acid moisturizing and fragrant microcapsule finishing agent:

[0067] The 1 g of lavender and 1 g of rosemary essential oil are added to 39 g of water solution containing 0.78 g of Tween 80 and 0.39 g of sodium dodecyl sulfate to obtain a capsule core emulsion, 6 g of hyaluronic acid is added to emulsify ultrasonically, then 9 g of chitosan is added as a capsule shell wall, heated to 70°C and stirred for 2 h to prepare a microcapsule emulsion with a solid content of 30%, and finally 10 g of silicone modified polyurethane is added and stirred for 2 h to prepare a hyaluronic acid moisturizing and fragrant microcapsule finishing agent.

[0068] (3) Preparation of hyaluronic acid moisturizing and fragrant polyester-cotton blended fabric:

[0069] The above-mentioned hyaluronic acid moisturizing and fragrant microcapsule finishing agent is configured into a finishing liquid of 30 g / L, the bath ratio is 1:30, and then the polyester-cotton blended fabric is immersed and padded in the finishing liquid, double immersion and double padding (with a liquid rate of 90%), and dried in an oven at 80°C for 5 min to prepare a hyaluronic acid moisturizing and fragrant polyester-cotton blended fabric.

[0070] Example 4

[0071] (1) Preparation of polyester-cotton blended fabric:

[0072] After mixing 35% polyester and 65% cotton fibers, twist spinning treatment is carried out, and finally warp and weft interlacing weaving is carried out through a water jet loom to form a polyester-cotton blended fabric.

[0073] (2) Preparation of hyaluronic acid moisturizing fragrance microcapsule finishing agent:

[0074] 1g lavender and 1g rosemary essential oil are added to 18g aqueous solution containing 0.56g Tween 80 and 0.28g sodium dodecyl sulfate for ultrasonic emulsification to obtain a capsule core emulsion, 4g hyaluronic acid is added for ultrasonic emulsification, followed by the addition of 6g chitosan as a capsule shell wall, heated to 70℃ and fully stirred for 2h to prepare a microcapsule emulsion with a solid content of 30%, and finally 10g silicone modified polyurethane is added and mixed and stirred for 2h to prepare a hyaluronic acid moisturizing fragrance microcapsule finishing agent.

[0075] (3) Preparation of hyaluronic acid moisturizing fragrance polyester-cotton blended fabric:

[0076] The above hyaluronic acid moisturizing fragrance microcapsule finishing agent is configured into a finishing liquor of 30g / L, the bath ratio is 1:30, and then the polyester-cotton blended fabric is immersed in the finishing liquor, double immersion and double padding (with a liquid rate of 90%), and dried in an oven at 80℃ for 5min to prepare a hyaluronic acid moisturizing fragrance polyester-cotton blended fabric.

[0077] Example 5

[0078] (1) Preparation of polyester-cotton blended fabric:

[0079] After mixing 35% polyester and 65% cotton fibers, twist spinning treatment is carried out, and finally warp and weft interlacing weaving is carried out through a water jet loom to form a polyester-cotton blended fabric, and finally 3g of sodium hydroxide and 1g of sodium bicarbonate are mixed to configure an alkali liquor of 6g / L, and the blended fabric is treated at 70℃ for 5min, washed to neutral, and dried.

[0080] (2) Preparation of hyaluronic acid moisturizing fragrance microcapsule finishing agent:

[0081] 1g lavender and 1g rosemary essential oil are added to 5g aqueous solution containing 0.092g Tween 80 and 0.046g sodium dodecyl sulfate for ultrasonic emulsification to obtain a capsule core emulsion, and a microcapsule emulsion with a solid content of 30% is prepared, and finally 10g silicone modified polyurethane is added and mixed and stirred for 2h to prepare a hyaluronic acid moisturizing fragrance microcapsule finishing agent.

[0082] (3) Preparation of hyaluronic acid moisturizing fragrance polyester-cotton blended fabric:

[0083] The above hyaluronic acid moisturizing fragrance microcapsule finishing agent is configured into 30 g / L finishing liquid, bath ratio is 1:30, then the polyester-cotton blended fabric is immersed in the finishing liquid, two-dip-two-pad (liquid rate is 90%), dried in an oven at 80°C for 5 min, to prepare the hyaluronic acid moisturizing fragrance polyester-cotton blended fabric.

[0084] Comparative Example 1

[0085] Steps (1) and (3) are the same as Example 1, except that the finishing agent is selected from commercially available moisturizing agent (propylene glycol), fragrance (lavender essential oil), and organic silicon modified polyurethane adhesive (LP-900, Green Union (Jinan) Chemical Technology Co., Ltd.), then compounded in a weight ratio of 2:1:6, and then the polyester-cotton fabric is finished by the same process.

[0086] Performance test:

[0087] The fabric prepared in Examples 1-5 and Comparative Example 1 is subjected to moisturizing effect test and fragrance test, respectively, and the results are shown in Tables 1-2.

[0088] (1) Moisturizing effect test:

[0089] The test method is as follows: the fabric in Examples 1-5 and Comparative Example 1 is processed into the same close-fitting clothes, and provided to 20 testers trained in skin feeling evaluation, to evaluate the moisturizing effect of the skin feeling of the clothes, and to evaluate the moisturizing effect of the skin feeling of the clothes before and after wearing for 100 times and washing for 100 times, wherein the test standard is evaluated by three grades, and the average score of 20 testers is taken for effect evaluation. Among them: "better moisturizing effect" means very satisfied, "general moisturizing effect" means effect, and "no moisturizing effect" means not satisfied. The test results are shown in Table 1:

[0090] Table 1, moisturizing effect of fabric prepared in different examples

[0091]

[0092] (2) Fragrance test:

[0093] The evaluation method of the fragrance of the terylene-cotton fabric is according to the group standard T / CAQI 241-2025 "Evaluation method of the long-lasting fragrance performance of fabric washing and care products". The fragrance of all original fabrics, fabrics placed for 60 days and fabrics washed after being placed for 60 days is evaluated. After the washing cycle (ISO 105-C06:2012 color fastness to washing), a part of the fabric is removed, air-dried for 24 hours and the fragrance intensity is tested by five evaluators. The fragrance evaporation is stabilized by hanging the sample on a clothesline for 1 hour. Then, the sample is brought to the evaluator in the room designated for evaluation. The evaluator scratches an "X" (about 3 cm x 3 cm) on the fabric with a fingernail to break some capsules and then immediately smells the sample. Finally, according to the presence of the odor, it is divided into 4 grades: "strong", "medium", "weak" or "none" (if the odor is not present). The fragrance effect test of the inventive examples 1-5 and comparative example 1 is shown in table 2.

[0094] Table 2, fabric fragrance test of different examples.

[0095]

[0096]

[0097] Analysis:

[0098] (1) As can be seen from table 1, table 2, the hyaluronic acid moisturizing fragrance terylene-cotton blended fabric in examples 1, 2, 3 and 4 adds three kinds of shell size of hyaluronic acid moisturizing fragrance microcapsules, respectively gives instant moisturizing to dry skin, long-acting water-locking, realizes three-dimensional moisturizing; combined with Figures 6-7 As shown in the table: the hyaluronic acid moisturizing fragrance terylene-cotton blended fabric prepared by the application can provide long-lasting sustained-release moisturizing effect, excellent durability, and still has excellent moisturizing and fragrance effect after more than 100 times of washing. Compared with example 4, after alkali reduction, the surface of the terylene-cotton blended fabric is uniformly etched, which introduces hydrophilic groups such as amide and carboxyl groups on the surface of the terylene-cotton blended fabric. The addition of silicone-modified polyurethane to prepare the finishing liquid increases the active sites of the terylene-cotton blended fabric after alkali reduction, so that the finished terylene-cotton blended fabric still has a moisturizing effect after rubbing and washing.

[0099] (2) As can be seen from the comparison between example 1 and comparative example 1: the hyaluronic acid moisturizing fragrance finishing agent prepared by the application has certain wear resistance and washing resistance compared with the commercially available moisturizing agent, but the fragrance of the hyaluronic acid moisturizing fragrance terylene-cotton blended fabric finished according to the same process is greatly lost after being placed for 60 days, and there is no odor. This is due to the independent distribution of the moisturizing agent and the fragrance agent in the mixed finishing agent, while the microcapsule in example 1 is a core-shell structure, which effectively blocks the evaporation of the fragrance, achieving a long-lasting fragrance effect.

[0100] As can be seen from the above, the hyaluronic acid moisturizing aromatic polyester-cotton blended fabric prepared in Embodiment 1 of the present application has good moisturizing property and long-lasting moisturizing property. And it can provide long-lasting slow-release fragrance effect, and has excellent durability, and still has aromatic fragrance after more than 100 times of washing.

[0101] The above is only part of the embodiments of the present application, and does not limit the present application in any way. Any simple modification, change and equivalent transformation of the above embodiments according to the technical essence of the present application still belong to the protection scope of the technical solutions of the present application.

Claims

1. A preparation process for a hyaluronic acid moisturizing aromatic polyester-cotton blended fabric, characterized in that: The following steps are involved: (1) Preparation of polyester-cotton blended fabrics: The polyester and cotton fibers are mixed in a certain proportion and then blended and woven to form a polyester-cotton blended fabric, which is then subjected to an alkali reduction treatment, washed and dried; (2) Preparation of hyaluronic acid moisturizing aromatic microcapsule finishing agent: Add fragrance and hyaluronic acid to an aqueous solution containing a surfactant, perform ultrasonic emulsification to obtain a capsule core emulsion, then add chitosan as a capsule shell wall, heat to 60°C-70°C and stir thoroughly for 1-2 hours to prepare a microcapsule emulsion, and finally add an aqueous adhesive and stir for 1-2 hours to prepare a hyaluronic acid moisturizing fragrance microcapsule finishing agent; (3) Preparation of hyaluronic acid moisturizing aromatic polyester-cotton blended fabric: The prepared hyaluronic acid moisturizing and aromatic microcapsule finishing agent is prepared into a finishing liquid, and the polyester-cotton blended fabric is then dipped into the finishing liquid and dried to obtain the hyaluronic acid moisturizing and aromatic polyester-cotton blended fabric.

2. The preparation process of a hyaluronic acid moisturizing aromatic polyester-cotton blended fabric according to claim 1, characterized in that: In the step (1), polyester fiber and cotton fiber are blended at a ratio of 35-65 / 35-65 to form a polyester-cotton blended fabric.

3. The preparation process of a hyaluronic acid moisturizing aromatic polyester-cotton blended fabric according to claim 1, characterized in that: In the step (1), the alkali reduction treatment of the polyester-cotton blended fabric adopts a mixed alkali solution treatment, the concentration of the mixed alkali solution is 6 g / L, the treatment temperature is 70° C., and the treatment time is 5 min; the mixed alkali is composed of a strong base and an alkaline salt, and the mass ratio of the strong base to the alkaline salt is 3:

1.

4. The preparation process of a hyaluronic acid moisturizing aromatic polyester-cotton blended fabric according to claim 3, characterized in that: The strong base is sodium hydroxide, and the alkaline salt is any one of sodium bicarbonate and sodium carbonate.

5. The preparation process of a hyaluronic acid moisturizing aromatic polyester-cotton blended fabric according to claim 1, characterized in that: In the step (2), the weight ratio of fragrance: hyaluronic acid: chitosan: aqueous adhesive is 1:1.5-2:1.5-2:3-5.

6. The preparation process of a hyaluronic acid moisturizing aromatic polyester-cotton blended fabric according to claim 1, characterized in that: In the step (2), the surfactant is obtained by compounding an anionic surfactant and a nonionic surfactant, and the amount of the surfactant used is 6-8% of the total weight of the fragrance, hyaluronic acid and chitosan.

7. The preparation process of a hyaluronic acid moisturizing aromatic polyester-cotton blended fabric according to claim 1, characterized in that: In the step (2), the water-based adhesive is any one of polyurethane, polyurethane acrylate, and silicone-modified polyurethane.

8. The process for preparing a hyaluronic acid moisturizing aromatic polyester-cotton blended fabric according to claim 7, characterized in that: The organosilicon-modified polyurethane is prepared by the following method: adding a mixture of acrylic monomer, initiator, catalyst, PDMS, polyurethane precursor and co-stabilizer to an aqueous solution containing a surfactant, adding a bridging agent, and then stirring to obtain a coarse emulsion, followed by ultrasonic treatment in a cell crusher to obtain a monomer miniemulsion; finally, stirring the obtained monomer miniemulsion in a nitrogen atmosphere for 0.5 hours, transferring it to a three-necked flask, maintaining the temperature at 70°C under a nitrogen environment for miniemulsion polymerization, and reacting for 6 hours to obtain the organosilicon-modified polyurethane emulsion.

9. The process for preparing a hyaluronic acid moisturizing aromatic polyester-cotton blended fabric according to claim 8, characterized in that: In the preparation of silicone-modified polyurethane, the acrylic monomers are butyl acrylate and styrene, the initiator is azobisisobutyronitrile, the catalyst is dibutyltin dilaurate, the polyurethane precursors are isophorone diisocyanate and polycaprolactone, the co-stabilizer is n-hexadecane, the bridging agent is hydroxyethyl methacrylate, and the surfactant is allyloxynonylphenol polyoxyethylene ether ammonium sulfate.

10. The preparation process of a hyaluronic acid moisturizing aromatic polyester-cotton blended fabric according to claim 1, characterized in that: In the step (3), the concentration of the finishing liquid is 30-40 g / L; the mass ratio of the fabric to the finishing liquid is 1:30; the padding method is two dips and two pads; after padding, the liquid padding rate of the fabric is 90%; the drying temperature is 80° C., and the drying time is 5 minutes.

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