A kind of aromatic health-care fabric and preparation method thereof

Abstract

The present invention belongs to the field of textiles and clothing, and discloses a kind of aromatic health-care fabric and a preparation method thereof. The method comprises: 1. pre-mixing frankincense, chitosan, fine-porous water-resistant silica gel and a catalyst, and then adding an auxiliary solvent to grind to obtain frankincense-based powder; 2. washing the frankincense-based powder with an acid solution, and then washing and spraying to obtain an active powder; 3. adding the active powder and polyurethane to dimethylformamide to obtain a core layer spinning solution, dissolving cellulose triacetate in 1,4-dioxane to obtain a shell layer spinning solution, and coaxially electrospinning to finally obtain an aromatic health-care fabric. The aromatic health-care fabric prepared by the present invention has antibacterial, aromatic, waterproof and breathable properties, and also has the function of auxiliary health care.

Description

Technical Field

[0001] The invention belongs to the field of textile clothing, and in particular relates to a fragrant health-care fabric and a preparation method thereof. Background Art

[0002] Functional health textile fabrics have been an important development hotspot in the textile industry in recent years. Health textiles have become a new fashion in the production and consumption of textiles and clothing. At present, there are two main methods for producing functional health textile fabrics: one is to use fiber raw materials with health functions for spinning and weaving; the other is to use new technologies to perform functional finishing on textile fabrics to give them certain health functions. However, since fiber raw materials with health functions have poor spinnability and are difficult to produce and process, a large amount of other traditional fiber raw materials must be added for blending, which is bound to greatly reduce its health function. However, using new technologies to perform functional finishing on textile fabrics has the problem of functional durability and is costly. Summary of the invention

[0003] In view of this, the object of the present invention is to provide a kind of aromatic health-care fabric and preparation method thereof, the aromatic health-care fabric has antibacterial, aromatic, waterproof and breathable properties, and also has the function of auxiliary health care.

[0004] In order to solve the above technical problems, the present invention provides a method for preparing a fragrant health-care fabric, comprising the following steps:

[0005] ① Premixing frankincense, chitosan, fine-porous water-resistant silica gel and a catalyst, and then adding an auxiliary solvent to grind to obtain a frankincense-based powder, which is insoluble in the auxiliary solvent;

[0006] ② Wash the frankincense-based powder with an acid solution, then wash with water and spray dry to obtain an active powder;

[0007] ③ The active powder and polyurethane are added into dimethylformamide to prepare the core spinning solution, cellulose triacetate is dissolved into 1,4-dioxane to prepare the shell spinning solution, and coaxial electrospinning is performed to finally obtain the aromatic health-care fabric.

[0008] Preferably, in step ①, the chitosan has a deacetylation degree of 55%-85% and a weight average molecular weight of 200,000-1,000,000; and the particle size of the fine-pore water-resistant silica gel is 1-10 mm.

[0009] Preferably, in step ①, the catalyst is one of 12-phosphotungstic acid, 12-silicotungstic acid and 12-phosphomolybdic acid.

[0010] Preferably, in step ①, the auxiliary solvent is one of dimethylformamide, tetrahydrofuran, and 1,4-dioxane.

[0011] Preferably, in step ①, the feed ratio of frankincense, chitosan, fine-porous water-resistant silica gel, catalyst, and auxiliary solvent is (4.1-8.5) g: (3.2-5.8) g: (5.4-6.6) g: (35-64) mg: (0.7-1.2) mL.

[0012] Preferably, in step ①, the grinding ball-to-material ratio is 10:1-15:1, the rotation speed is 1000-1500rpm, and the grinding time is 35-80min.

[0013] Preferably, in step ②, the acid solution is one of oxalic acid solution, citric acid solution, DL-tartaric acid solution, and lactic acid solution, and the concentration is 5-20 g / L.

[0014] Preferably, in step ②, the washing comprises: adding the frankincense-based powder into the acid solution, stirring sufficiently, and filtering.

[0015] Preferably, in step ③, the feed ratio of active powder, polyurethane 50A and dimethylformamide in the core layer spinning solution is (2.5-3.2) g:(15-18) g:100 mL; the feed ratio of cellulose triacetate and 1,4-dioxane in the shell layer spinning solution is (12-15) g:100 mL.

[0016] Preferably, in step ③, the coaxial electrospinning conditions are: voltage 15-22 kV, receiving distance 14-20 cm, core layer spinning solution flow rate 0.5-0.8 mL / h, shell layer spinning solution flow rate 1.2-1.5 mL / h.

[0017] The invention also provides a fragrant health-care fabric prepared by the preparation method.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] ① In the preparation of the core layer spinning solution, the present invention adopts a mechanochemical method, selects water-resistant silica gel as a grinding aid and a water-carrying agent, and utilizes a solid heteropolyacid catalyst to catalyze the esterification reaction of the active ingredients in frankincense and chitosan. On the one hand, the esterification product has the effect of slowing down the release of the active ingredients, and on the other hand, reduces the amount of organic solvent used, which is beneficial to environmental protection.

[0020] ② The present invention uses coaxial electrospinning to prepare fibers with a skin-core structure, and both the skin and the core have hydrophobic properties, which prevents the loss of active ingredients during washing. At the same time, the active ingredients are dispersed in the polyurethane core layer, which can continuously release the active ingredient 11-carbonyl-β-acetyl boswellic acid in frankincense, achieving health care effects such as lipid reduction, anti-inflammatory and anti-tumor effects, and polyurethane can also provide sufficient elasticity for the fabric; the shell layer component is cellulose triacetate, which can make up for the problem of poor tensile strength caused by polyurethane, and has the drape and glossiness of silk, good sun resistance, and can protect the polyurethane core layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 are the health care performance test results, wherein A is the lipid degradation performance test result, and B is the 5-lipoxygenase activity inhibition performance test result. DETAILED DESCRIPTION

[0022] In order to further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples, but it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the claims of the present invention.

[0023] Example 1

[0024] ① Premix 7.4g of frankincense, 4.5g of chitosan with a deacetylation degree of 80% and a weight average molecular weight of 500,000, 6.2g of fine-porous water-resistant silica gel with a particle size of 5mm, and 52mg of 12-silicotungstic acid, then add 1.1mL of 1,4-dioxane, grind for 60min at a ball-to-material ratio of 12:1 and a rotation speed of 1200rpm to obtain frankincense-based powder;

[0025] ② Wash the mastic-based powder from step ① with 12 g / LDL-tartaric acid solution, then wash with water and spray dry to obtain active powder;

[0026] ③ Add 3.0g active powder of step ② and 17.5g polyurethane 50A to 100mL dimethylformamide to prepare core layer spinning solution, dissolve 13.5g cellulose triacetate in 100mL 1,4-dioxane to prepare shell layer spinning solution, and perform coaxial electrospinning at a voltage of 20kV, a receiving distance of 16cm, a core layer spinning solution flow rate of 0.7mL / h, and a shell layer spinning solution flow rate of 1.4mL / h to finally obtain aromatic health care fabrics.

[0027] Example 2

[0028] ① Premix 4.1 g of frankincense, 3.2 g of chitosan with a deacetylation degree of 85% and a weight average molecular weight of 1 million, 6.6 g of fine-porous water-resistant silica gel with a particle size of 1 mm, and 64 mg of 12-phosphotungstic acid, then add 1.2 mL of dimethylformamide, grind for 80 min at a ball-to-material ratio of 10:1 and a rotation speed of 1000 rpm to obtain frankincense-based powder;

[0029] ② Wash the frankincense-based powder in step ① with 5 g / L oxalic acid solution, then wash with water and spray dry to obtain active powder;

[0030] ③ Add 3.2 g of active powder from step ② and 18 g of polyurethane 50A to 100 mL of dimethylformamide to prepare a core layer spinning solution, dissolve 12 g of cellulose triacetate in 100 mL of 1,4-dioxane to prepare a shell layer spinning solution, and perform coaxial electrospinning at a voltage of 22 kV, a receiving distance of 20 cm, a core layer spinning solution flow rate of 0.5 mL / h, and a shell layer spinning solution flow rate of 1.2 mL / h to finally obtain an aromatic health-care fabric.

[0031] Example 3

[0032] ① 8.5 g of frankincense, 5.8 g of chitosan with a deacetylation degree of 55% and a weight average molecular weight of 200,000, 5.4 g of fine-pore water-resistant silica gel with a particle size of 10 mm, and 35 mg of 12-phosphomolybdic acid were premixed, and then 0.7 mL of tetrahydrofuran was added. The mixture was ground at a pellet-to-material ratio of 15:1 and a rotation speed of 1500 rpm for 35 min to obtain frankincense-based powder;

[0033] ② Wash the mastic-based powder obtained in step ① with a 20 g / L citric acid solution, then wash with water and spray dry to obtain an active powder;

[0034] ③ Add 2.5g of the active powder in step ② and 15g of polyurethane 50A to 100mL of dimethylformamide to prepare a core layer spinning solution, dissolve 15g of cellulose triacetate in 100mL of 1,4-dioxane to prepare a shell layer spinning solution, and perform coaxial electrospinning at a voltage of 15kV, a receiving distance of 14cm, a core layer spinning solution flow rate of 0.8mL / h, and a shell layer spinning solution flow rate of 1.5mL / h to finally obtain an aromatic health-care fabric.

[0035] Comparative Example 1

[0036] ① Premix 7.4g of frankincense, 4.5g of chitosan with a deacetylation degree of 80% and a weight average molecular weight of 500,000, 6.2g of fine-pore water-resistant silica gel with a particle size of 5mm, and 52mg of 12-silicotungstic acid, then add 1.1mL of 1,4-dioxane, mix thoroughly, and obtain powder;

[0037] ② Wash the powder from step ① with 12 g / LDL-tartaric acid solution, then wash with water and spray dry to obtain active powder;

[0038] ③ Add 3.0g active powder of step ② and 17.5g polyurethane 50A to 100mL dimethylformamide to prepare core layer spinning solution, dissolve 13.5g cellulose triacetate in 100mL 1,4-dioxane to prepare shell layer spinning solution, and perform coaxial electrospinning at a voltage of 20kV, a receiving distance of 16cm, a core layer spinning solution flow rate of 0.7mL / h, and a shell layer spinning solution flow rate of 1.4mL / h to finally obtain the fabric.

[0039] Comparative Example 2

[0040] ① Premix 7.4g of frankincense, 4.5g of chitosan with a deacetylation degree of 80% and a weight average molecular weight of 500,000, 6.2g of fine-pore water-resistant silica gel with a particle size of 5mm, and 52mg of 12-phosphotungstic acid, then add 1.1mL of tetrahydrofuran, grind for 60min at a ball-to-material ratio of 12:1 and a rotation speed of 1200rpm to obtain frankincense-based powder;

[0041] ② Add 3.0g of the frankincense-based powder and 17.5g of polyurethane 50A from step ① into 100mL of dimethylformamide to prepare a core layer spinning solution, and dissolve 13.5g of cellulose triacetate in 100mL of 1,4-dioxane to prepare a shell layer spinning solution. Coaxial electrospinning was performed, and all the results were droplets, and no fabric could be obtained.

[0042] Comparative Example 3

[0043] ① 7.4g of frankincense, 4.5g of chitosan with a deacetylation degree of 80% and a weight average molecular weight of 500,000, and 6.2g of fine-pored water-resistant silica gel with a particle size of 5mm, and then 1.1mL of dimethylformamide were added, and the pellet-to-material ratio was 12:1, the rotation speed was 1200rpm, and the grinding was carried out for 60min to obtain frankincense-based powder;

[0044] ② Wash the mastic-based powder obtained in step ① with a 12 g / L lactic acid solution, then wash with water and spray dry to obtain an active powder;

[0045] ③ Add 3.0g active powder of step ② and 17.5g polyurethane 50A to 100mL dimethylformamide to prepare core layer spinning solution, dissolve 13.5g cellulose triacetate in 100mL 1,4-dioxane to prepare shell layer spinning solution, and perform coaxial electrospinning at a voltage of 20kV, a receiving distance of 16cm, a core layer spinning solution flow rate of 0.7mL / h, and a shell layer spinning solution flow rate of 1.4mL / h to finally obtain the fabric.

[0046] Comparative Example 4

[0047] ① Grind 7.4 g of frankincense and 4.5 g of chitosan with a deacetylation degree of 80% and a weight average molecular weight of 500,000 at a pellet to material ratio of 12:1 and a rotation speed of 1200 rpm for 60 min to obtain frankincense-based powder;

[0048] ② 3.0 g of the frankincense-based powder of step ① and 17.5 g of polyurethane 50A were added to 100 mL of dimethylformamide to prepare a core layer spinning solution, 13.5 g of cellulose triacetate was dissolved in 100 mL of 1,4-dioxane to prepare a shell layer spinning solution, and coaxial electrospinning was performed at a voltage of 20 kV, a receiving distance of 16 cm, a core layer spinning solution flow rate of 0.7 mL / h, and a shell layer spinning solution flow rate of 1.4 mL / h to finally obtain the fabric.

[0049] Fabric treatment: The fabrics of Examples 1-3 and Comparative Examples 1 and 3 were washed with standard soap solution at 40°C and a bath ratio of 50:1 for 30 min according to the method of GB / T 3921-2008 "Textiles - Tests for Colour Fastness - Colour Fastness to Washing with Soap", then washed twice with water and then dried.

[0050] Antibacterial performance test

[0051] The antibacterial circle method was used to perform antibacterial tests on the fabrics of Examples 1-3 and Comparative Examples 1, 3, and 4. The results are shown in Table 1.

[0052] Table 1

[0053]

[0054] As can be seen from Table 1, the fabrics prepared in the examples have a strong antibacterial effect, while the antibacterial effect of the fabrics in the comparative examples is significantly lower than that in the examples. The fabrics in comparative example 1 have not been mechanically ground, and the frankincense active ingredients have not been esterified with chitosan to form nanoparticles, and the acid washing in the preparation process causes a large amount of active substances to dissolve and flow, resulting in a decrease in the antibacterial effect. In the method of comparative example 2, no acid washing is performed, and the impurities and unreacted products and trace auxiliary solvents in the esterification process destroy the stability of the spinning solution, and the fiber cannot be electrospun. Although frankincense and chitosan are added to the fabrics in comparative example 3, due to the lack of an esterification catalyst, the two are not well esterified to form insoluble nanoparticles, and therefore will also be washed away by the acid solution. In comparative example 4, although frankincense and chitosan are both successfully incorporated into the fabrics, the active ingredients are directly dissolved after the soap washing process, and the antibacterial effect is significantly reduced. Only when the frankincense active ingredients in the examples are esterified with chitosan to form nanoparticles can the antibacterial effect be maintained for a long time, and will not be washed away by the acid solution or ordinary washing.

[0055] Health performance testing

[0056] Mouse 3T3-L1 adipocytes were treated with the fabrics of Examples 1-3 and Comparative Examples 1, 3, and 4, and the triglyceride content in the cells was determined using a triglyceride content determination kit. Normal cultured cells were used as a control to calculate the lipid degradation rate.

[0057] The fabrics of Examples 1-3 and Comparative Examples 1, 3, and 4 were used to treat the leukocytes B95-8 transformed by the Epstein-Barr virus of the marmoset monkey, and the concentration changes of the products of 5-lipoxygenase, leukotriene B4 and 5-hydroxyeicosatetraenoic acid, were detected. A Brava BDS C18 chromatographic column (4.6 mm×250 mm, 5 μm) was used, and the gradient elution was carried out with methanol-0.02% acetic acid water (0-5 min, the ratio was 22.2:77.8; 5-8 min, the ratio was from 22.2:77.8→15:85; 8-18 min, the ratio was 15:85), and the flow rate was 0.8 mL·min -1 ; Column temperature was 30°C; the concentrations of leukotriene B4 and 5-hydroxyeicosatetraenoic acid, the products of 5-lipoxygenase, were detected at 235nm and 275nm, respectively. Figure 1 shown.

[0058] Depend on Figure 1 It can be seen that the fabric prepared in the embodiment has lipolysis ability on mouse 3T3-L1 adipocytes, and the triglyceride degradation in the cells is obvious. The active ingredient 11-carbonyl-β-acetyl boswellic acid in frankincense has lipid-lowering ability. The fabric prepared in the embodiment can fix and slowly release the active ingredient of frankincense to achieve the purpose of promoting lipolysis. The fabric prepared in the comparative example cannot slowly release the active ingredient of frankincense and does not have this property.

[0059] In addition, 5-lipoxygenase is a key enzyme in the arachidonic acid metabolic pathway for synthesizing leukotrienes. Leukotrienes are an important inflammatory and allergic substance in the body and play an important role in the occurrence and development of malignant tumors. Inhibiting the expression of 5-lipoxygenase and its products may prevent and reverse the occurrence of malignant tumors. The fabric prepared by the embodiment can significantly inhibit the activity of 5-lipoxygenase in B95-8 leukocytes, resulting in a decrease in the concentration of its products, indicating that it has a certain anti-inflammatory and anti-tumor effect. This effect mainly depends on the frankincense fatty acids in frankincense, such as 11-carbonyl-β-acetyl frankincense acid. The fabrics of Comparative Examples 1 and 3 cannot esterify the frankincense active ingredients with chitosan to form nanoparticles. At the same time, the pickling process will cause the active ingredients to dissolve and lose, and there is no anti-inflammatory and anti-tumor effect, so the health-care effect of frankincense cannot be reflected. The fabric of Comparative Example 4 has frankincense active ingredients, but a soaping treatment causes a large amount of release of the ingredients, and the ideal health-care function cannot be achieved in the test.

[0060] The present invention provides a method and idea of ​​a fragrant health-care fabric and a method for preparing the same. There are many methods and approaches to realize the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be realized by existing technologies.

Claims

1. A method for preparing a fragrant health-care fabric, characterized in that: The steps include: S1. The frankincense, chitosan, fine-porous water-resistant silica gel, and the catalyst are pre-mixed, and then an auxiliary solvent is added to grind to obtain a frankincense-based powder; the catalyst is one of 12-phosphotungstic acid, 12-silicotungstic acid and 12-phosphomolybdic acid; S2. washing the frankincense-based powder with an acid solution, then washing with water and spray-drying to obtain an active powder; S3. The active powder and polyurethane 50A are added to dimethylformamide to prepare a core layer spinning solution, cellulose triacetate is dissolved in 1,4-dioxane to prepare a shell layer spinning solution, and coaxial electrospinning is performed to finally obtain a fragrant health-care fabric.

2. The method for preparing a fragrant health-care fabric according to claim 1, characterized in that: In step S1, the chitosan has a deacetylation degree of 55%-85% and a weight average molecular weight of 200,000-1,000,000; and the particle size of the fine-pore water-resistant silica gel is 1-10 mm.

3. The method for preparing a fragrant health-care fabric according to claim 1, characterized in that: In step S1, the auxiliary solvent is one of dimethylformamide, tetrahydrofuran and 1,4-dioxane.

4. The method for preparing a fragrant health-care fabric according to claim 1, characterized in that: In step S1, the feed ratio of frankincense, chitosan, fine-porous water-resistant silica gel, catalyst, and auxiliary solvent is (4.1-8.5) g: (3.2-5.8) g: (5.4-6.6) g: (35-64) mg: (0.7-1.2) mL.

5. The method for preparing a fragrant health-care fabric according to claim 1, characterized in that: In step S1, the grinding ball-to-material ratio is 10:1-15:1, the rotation speed is 1000-1500rpm, and the grinding time is 35-80min.

6. The method for preparing a fragrant health-care fabric according to claim 1, characterized in that: In step S2, the concentration of the acid solution is 5-20 g / L, and the acid solution is one of oxalic acid solution, citric acid solution, DL-tartaric acid solution and lactic acid solution.

7. The method for preparing a fragrant health-care fabric according to claim 1, characterized in that: In step S2, the feed ratio of active powder, polyurethane 50A and dimethylformamide in the core layer spinning solution is (2.5-3.2) g: (15-18) g: 100 mL; the feed ratio of cellulose triacetate and 1,4-dioxane in the shell layer spinning solution is (12-15) g: 100 mL.

8. The method for preparing a fragrant health-care fabric according to claim 1, characterized in that: In step S3, the coaxial electrospinning conditions are: voltage 15-22 kV, receiving distance 14-20 cm, core layer spinning solution flow rate 0.5-0.8 mL / h, shell layer spinning solution flow rate 1.2-1.5 mL / h.

9. A fragrant health-care fabric prepared according to the preparation method according to any one of claims 1 to 8.

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