阅读说明：本技术 一种环保型假发材料及其制备方法 (Environment-friendly wig material and preparation method thereof ) 是由 黄永祥 黄小云 唐泳 王士喜 于 2021-08-17 设计创作，主要内容包括：本发明涉及假发材料领域,具体为一种环保型假发材料及其制备方法,由以下成分组成：聚乳酸、改性胶原蛋白、复合纤维素、壳聚糖接枝HPMCP、交联剂、氢氧化钠、尿素、乙二醇二缩水甘油醚、水,本发明所制备的假发材料力学性能良好,断裂强度≥16.09cN·dtex～(-1),断裂伸长率≥65.28％,且经过100℃水浸泡后,其相关力学性能并没有太过明显的下降,说明本发明假发材料可用热水进行消毒清洗,使用起来更方便。(The invention relates to the field of wig materials, in particular to an environment-friendly wig material and a preparation method thereof, wherein the environment-friendly wig material comprises the following components: polylactic acid, modified collagen, composite cellulose, chitosan grafted HPMCP, a cross-linking agent, sodium hydroxide, urea, ethylene glycol diglycidyl ether and water, and the wig material prepared by the method has good mechanical property, and the breaking strength is more than or equal to 16.09cN dtex ‑1 The elongation at break is more than or equal to 65.28 percent, and the related mechanical properties of the wig material are not reduced too obviously after being soaked in water at 100 ℃, which shows that the wig material can be disinfected and cleaned by hot water and is more square when being usedThen the process is completed.)

1. The environment-friendly wig material is characterized by comprising the following components:

polylactic acid, modified collagen, composite cellulose, chitosan grafted HPMCP, a cross-linking agent, sodium hydroxide, urea, ethylene glycol diglycidyl ether and water.

2. The environmentally friendly wig material of claim 1, comprising the following components in parts by weight:

30-40 parts of polylactic acid, 10-15 parts of modified collagen, 30-40 parts of composite cellulose, 5-10 parts of chitosan grafted HPMCP, 0.1-1 part of cross-linking agent, 3-5 parts of sodium hydroxide, 3-5 parts of urea, 1-2 parts of ethylene glycol diglycidyl ether and 400 parts of water 300-.

3. The environmentally friendly wig material of claim 1, wherein the composite cellulose is prepared from oxidized cellulose, cellulose and cellulose nanocrystallites in a weight ratio of 1-3: 5-10: 1.

4. The environmentally friendly wig material of claim 1, wherein said modified collagen is vegetable tannin modified collagen.

5. The environmentally friendly wig material of claim 4, wherein said vegetable tannin modified collagen is prepared by the following steps:

adding collagen into phosphoric acid buffer solution, heating to 70-75 deg.C, stirring for 30-50min, cooling to 40-50 deg.C, adding plant tannin, reacting for 5-10 hr, transferring the reaction solution into dialysis bag, dialyzing for 20-25 hr with water as dialysis solution, centrifuging the dialyzed solution, and freeze-drying the obtained solid at low temperature.

6. The environmentally friendly wig material of claim 1, wherein the weight ratio of collagen to vegetable tannin is 3-5: 1.

7. the environmentally friendly wig material of claim 1, wherein the chitosan grafted HPMCP is prepared by the following method:

s1: fully swelling HPMCP with ethanol to obtain a solution A;

s2: under the protection of inert gas, cooling the MES buffer solution to below 0 ℃, dropwise adding the solution A, adding EDC and NHS, reacting at the temperature for 2-5h, dropwise adding a chitosan/acetic acid solution into a reaction system, reacting at room temperature for 20-25h, adding methanol, uniformly stirring, adding sodium hydroxide, cooling the reaction solution to 0 ℃, and stirring for 1-3 h;

s3: filtering, washing the obtained solid with water to neutrality, and freeze-drying at low temperature.

8. The environmentally friendly wig material of claim 7, wherein the MES buffer solution has pH of 5-5.4 and mass concentration of 5.8-6 g/L;

the mass concentration of the chitosan/acetic acid solution is 15-25 g/L.

9. The environmentally friendly wig material of claim 1, wherein the cross-linking agent is any one of glutaraldehyde, carbodiimide, polyethylene glycol, and genipin.

10. The method for preparing environment-friendly wig material according to any one of claims 1 to 9, comprising the following steps:

adding sodium hydroxide and urea into water, stirring for dissolving, cooling to below 0 ℃, adding modified collagen and composite cellulose, stirring at the speed of 50-100r/min for 10-20min, standing for 1-3h, adding ethylene glycol diglycidyl ether, continuing stirring at the speed of 50-100r/min for 30-50min, adding polylactic acid and a cross-linking agent, heating to 50-60 ℃, stirring at the speed of 300-500r/min for 30-50min, standing for defoaming for 10-15h under vacuum to obtain a stock solution, extruding the stock solution into a coagulating bath after passing through a spinning machine, stretching, washing with water, and drying to obtain the wig material.

Technical Field

The invention relates to the field of wig materials, in particular to an environment-friendly wig material and a preparation method thereof.

Background

Wigs are hair made by artificial techniques, used as decorative accessories to be worn by bald or thin hair, or as part of a costume or professional outfit or fashion decoration.

At present, wigs are mostly made of high polymer materials such as polyvinyl chloride, polypropylene, polyamide and the like, although the cost is low, the wearing comfort is poor, and hairs are not easy to degrade and easy to cause pollution after falling off or discarding, although related reports using polylactic acid as wig materials are also provided, such as Chinese patent CN102926024A, the degradable wig polylactic acid fiber and the production process thereof are provided, the degradable wig polylactic acid fiber is prepared by adding 1.5 to 4 parts by weight of carbon black master batch, 0.1 to 2.5 parts by weight of titanium dioxide, 0.1 to 3 parts by weight of talcum powder and 0.5 to 2 parts by weight of polyester wax into 100 parts by weight of polylactic acid, uniformly stirring, and carrying out a series of processes of batching, extruding, cooling, oiling, stretching, rolling and shaping and packaging, the prepared wig fiber has good flexibility and good moisture-removing and air permeability, and the wig fiber prepared by polylactic acid with degradability can be completely degraded by microorganisms in the nature after being used, but the mechanical property of the prepared wig is difficult to meet the requirement, and the hair is easy to break, thereby preventing the polylactic acid from being used as the wig raw material.

Disclosure of Invention

The purpose of the invention is as follows: aiming at the technical problems, the invention provides an environment-friendly wig material and a preparation method thereof.

The technical scheme adopted by the invention is as follows:

an environment-friendly wig material comprises the following components:

polylactic acid, modified collagen, composite cellulose, chitosan grafted HPMCP, a cross-linking agent, sodium hydroxide, urea, ethylene glycol diglycidyl ether and water.

Further, the environment-friendly wig material comprises the following components in parts by weight:

30-40 parts of polylactic acid, 10-15 parts of modified collagen, 30-40 parts of composite cellulose, 5-10 parts of chitosan grafted HPMCP, 0.1-1 part of cross-linking agent, 3-5 parts of sodium hydroxide, 3-5 parts of urea, 1-2 parts of ethylene glycol diglycidyl ether and 400 parts of water 300-.

Further, the composite cellulose is prepared from oxidized cellulose, cellulose and cellulose nano-microcrystal according to the weight ratio of 1-3: 5-10: 1.

Further, the modified collagen is vegetable tannin modified collagen.

Further, the preparation method of the vegetable tannin modified collagen comprises the following steps:

adding collagen into phosphoric acid buffer solution, heating to 70-75 deg.C, stirring for 30-50min, cooling to 40-50 deg.C, adding plant tannin, reacting for 5-10 hr, transferring the reaction solution into dialysis bag, dialyzing for 20-25 hr with water as dialysis solution, centrifuging the dialyzed solution, and freeze-drying the obtained solid at low temperature.

Furthermore, the weight ratio of the collagen to the vegetable tannin is 3-5: 1.

further, the preparation method of the chitosan grafted HPMCP comprises the following steps:

s1: fully swelling HPMCP with ethanol to obtain a solution A;

s2: under the protection of inert gas, cooling the MES buffer solution to below 0 ℃, dropwise adding the solution A, adding EDC and NHS, reacting at the temperature for 2-5h, dropwise adding a chitosan/acetic acid solution into a reaction system, reacting at room temperature for 20-25h, adding methanol, uniformly stirring, adding sodium hydroxide, cooling the reaction solution to 0 ℃, and stirring for 1-3 h;

s3: filtering, washing the obtained solid with water to neutrality, and freeze-drying at low temperature.

Furthermore, the pH value of the MES buffer solution is 5-5.4, and the mass concentration is 5.8-6 g/L;

the mass concentration of the chitosan/acetic acid solution is 15-25 g/L.

Further, the cross-linking agent is any one of glutaraldehyde, carbodiimide, polyethylene glycol and genipin.

The preparation method of the environment-friendly wig material comprises the following steps:

adding sodium hydroxide and urea into water, stirring for dissolving, cooling to below 0 ℃, adding modified collagen and composite cellulose, stirring at the speed of 50-100r/min for 10-20min, standing for 1-3h, adding ethylene glycol diglycidyl ether, continuing stirring at the speed of 50-100r/min for 30-50min, adding polylactic acid and a cross-linking agent, heating to 50-60 ℃, stirring at the speed of 300-500r/min for 30-50min, standing for defoaming for 10-15h under vacuum to obtain a stock solution, extruding the stock solution into a coagulating bath after passing through a spinning machine, stretching, washing with water, and drying to obtain the wig material.

The invention has the beneficial effects that:

the invention provides an environment-friendly wig material, wherein polylactic acid is used as a novel biodegradable material, the mechanical property and the thermal stability are good, but the polylactic acid is only rarely used as a wig material, the inventor uses the polylactic acid as a raw material to prepare the wig material, a good effect is obtained, collagen is used as a raw material of the wig, the components can be closer to real hair, the texture of the wig is improved, plant tannin molecules and functional groups on collagen polypeptide chains can be combined in various different forms to generate new molecular cross-linking bonds, phenolic hydroxyl groups in the tannin, carboxyl groups on protein peptide bonds and terminal carboxyl groups of the polylactic acid form hydrogen bonds, the collagen and the polylactic acid are further cross-linked, the tightness degree between the collagen and the rest raw materials is enhanced, the mechanical strength and the thermal stability of the wig are improved, the content of the hydrogen bonds in a stock solution can be improved by adding composite cellulose, the compatibility of the raw materials is improved, the wig material is higher in spinning and forming performance, chitosan has multiple physiological functions of biodegradability, biocompatibility, nontoxicity, bacteriostasis, cancer resistance, lipid reduction, immunity enhancement and the like, the chitosan is added after being grafted with HPMCP, the degradation rate of the wig material can be controlled, the agglomeration effect of the chitosan is reduced, the wig material has a better dispersion effect, the mechanical property of the wig material is improved, the mechanical property of the wig material is good, and the breaking strength is not less than 16.09cN dtex^-1The elongation at break is more than or equal to 65.28 percent, and the related mechanical properties of the wig material are not reduced too much after being soaked in water at 100 ℃, which shows that the wig material can be sterilized and cleaned by hot water and is more convenient to use.

Detailed Description

The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

Wherein TEMPO is (2,2,6, 6-tetramethyl piperidine-1-oxyl) which is an important catalyst in a TEMPO catalytic oxidation system;

HPMCP is hydroxypropyl methylcellulose phthalate;

MES is morpholine ethanesulfonic acid;

EDC is 1-ethyl- (3-dimethylaminopropyl) carbonyldiimine hydrochloride;

NHS for N-hydroxy succinimide.

Example 1:

an environment-friendly wig material comprises the following components in parts by weight:

35 parts of polylactic acid, 12 parts of modified collagen, 30 parts of composite cellulose, 5 parts of chitosan grafted HPMCP, 0.1 part of glutaraldehyde, 5 parts of sodium hydroxide, 3 parts of urea, 2 parts of ethylene glycol diglycidyl ether and 300 parts of water.

Wherein the composite cellulose is prepared by oxidizing cellulose with TEMPO, cellulose and cellulose nano-microcrystal according to the weight ratio of 3: 10: 1.

The modified collagen is vegetable tannin modified collagen, and the preparation method comprises the following steps:

adding collagen into phosphoric acid buffer solution, heating to 75 ℃, stirring for 30min, cooling to 50 ℃, adding plant tannin, wherein the weight ratio of the collagen to the plant tannin is 3: 1, continuously reacting for 10 hours, transferring the reaction solution into a dialysis bag for dialysis for 25 hours, wherein the dialysis solution is water, centrifuging the dialyzed solution, and freezing and drying the obtained solid at low temperature.

The preparation method of the chitosan grafted HPMCP comprises the following steps:

s1: fully swelling HPMCP by using ethanol with the weight 10 times that of the HPMCP to obtain a solution A;

s2: under the protection of inert gas, cooling MES buffer solution with pH of 5 and mass concentration of 6g/L to below 0 ℃, dropwise adding the solution A, adding EDC and NHS, reacting at the temperature for 2 hours, dropwise adding chitosan/acetic acid solution with mass concentration of 20g/L into a reaction system, recovering room temperature for reaction for 25 hours, adding methanol and stirring uniformly, adding sodium hydroxide, cooling the reaction solution to 0 ℃, and stirring for 2 hours;

s3: filtering, washing the obtained solid with water to neutrality, and freeze-drying at low temperature.

The preparation method of the environment-friendly wig material comprises the following steps:

adding sodium hydroxide and urea into water, stirring for dissolving, cooling to below 0 ℃, adding modified collagen and composite cellulose, stirring at the speed of 50r/min for 15min, standing for 2h, adding ethylene glycol diglycidyl ether, continuously stirring at the speed of 100r/min for 40min, adding polylactic acid and glutaraldehyde, heating to 50 ℃, stirring at the speed of 500r/min for 50min, standing for defoaming for 15h under vacuum to obtain a stock solution, extruding the stock solution into a coagulating bath (ethanol, water and calcium chloride are mixed according to the weight ratio of 10: 10: 1, then regulating the pH value to 3 with hydrochloric acid), stretching, washing with water, and drying to obtain the wig material.

Example 2:

an environment-friendly wig material comprises the following components in parts by weight:

30 parts of polylactic acid, 15 parts of modified collagen, 30 parts of composite cellulose, 10 parts of chitosan grafted HPMCP, 0.1 part of glutaraldehyde, 5 parts of sodium hydroxide, 3 parts of urea, 2 parts of ethylene glycol diglycidyl ether and 300 parts of water.

Wherein the composite cellulose is prepared by oxidizing cellulose with TEMPO, cellulose and cellulose nano-microcrystal according to the weight ratio of 3: 5: 1.

The modified collagen is vegetable tannin modified collagen, and the preparation method comprises the following steps:

adding collagen into phosphoric acid buffer solution, heating to 75 ℃, stirring for 30min, cooling to 50 ℃, adding plant tannin, wherein the weight ratio of the collagen to the plant tannin is 3: 1, continuously reacting for 10 hours, transferring the reaction solution into a dialysis bag for dialysis for 20 hours, wherein the dialysis solution is water, centrifuging the dialyzed solution, and freezing and drying the obtained solid at low temperature.

The preparation method of the chitosan grafted HPMCP comprises the following steps:

s1: fully swelling HPMCP by using ethanol with the weight 10 times that of the HPMCP to obtain a solution A;

s2: under the protection of inert gas, cooling MES buffer solution with pH of 5.4 and mass concentration of 5.8g/L to below 0 ℃, firstly dripping solution A into the MES buffer solution, then adding EDC and NHS, reacting for 5 hours at the temperature, then dripping chitosan/acetic acid solution with mass concentration of 15g/L into a reaction system, recovering room temperature for reaction for 25 hours, adding methanol and uniformly stirring, then adding sodium hydroxide, cooling the reaction solution to 0 ℃, and stirring for 1 hour;

s3: filtering, washing the obtained solid with water to neutrality, and freeze-drying at low temperature.

The preparation method of the environment-friendly wig material comprises the following steps:

adding sodium hydroxide and urea into water, stirring for dissolving, cooling to below 0 ℃, adding modified collagen and composite cellulose, stirring at the speed of 100r/min for 10min, standing for 3h, adding ethylene glycol diglycidyl ether, continuously stirring at the speed of 50r/min for 30min, adding polylactic acid and glutaraldehyde, heating to 60 ℃, stirring at the speed of 300r/min for 50min, standing for defoaming under vacuum for 10h to obtain a stock solution, extruding the stock solution into a coagulating bath (ethanol, water and calcium chloride are mixed according to the weight ratio of 10: 10: 1, then regulating the pH to 3 with hydrochloric acid), stretching, washing with water, and drying to obtain the wig material.

Example 3:

an environment-friendly wig material comprises the following components in parts by weight:

40 parts of polylactic acid, 10 parts of modified collagen, 40 parts of composite cellulose, 5 parts of chitosan grafted HPMCP, 1 part of glutaraldehyde, 3 parts of sodium hydroxide, 5 parts of urea, 1 part of ethylene glycol diglycidyl ether and 400 parts of water.

Wherein the composite cellulose is prepared by oxidizing cellulose with TEMPO, cellulose and cellulose nano-microcrystal according to the weight ratio of 1: 10: 1.

The modified collagen is vegetable tannin modified collagen, and the preparation method comprises the following steps:

adding collagen into phosphoric acid buffer solution, heating to 70 ℃, stirring for 50min, cooling to 40 ℃, adding plant tannin, wherein the weight ratio of the collagen to the plant tannin is 5: 1, continuously reacting for 5 hours, transferring the reaction solution into a dialysis bag for dialysis for 25 hours, wherein the dialysis solution is water, centrifuging the dialyzed solution, and freezing and drying the obtained solid at low temperature.

The preparation method of the chitosan grafted HPMCP comprises the following steps:

s1: fully swelling HPMCP by using ethanol with the weight 10 times that of the HPMCP to obtain a solution A;

s2: under the protection of inert gas, cooling MES buffer solution with pH of 5 and mass concentration of 6g/L to below 0 ℃, dropwise adding the solution A, adding EDC and NHS, reacting at the temperature for 2 hours, dropwise adding chitosan/acetic acid solution with mass concentration of 25g/L into a reaction system, reacting at room temperature for 20 hours, adding methanol, stirring uniformly, adding sodium hydroxide, cooling the reaction solution to 0 ℃, and stirring for 3 hours;

s3: filtering, washing the obtained solid with water to neutrality, and freeze-drying at low temperature.

The preparation method of the environment-friendly wig material comprises the following steps:

adding sodium hydroxide and urea into water, stirring for dissolving, cooling to below 0 ℃, adding modified collagen and composite cellulose, stirring at the speed of 50r/min for 20min, standing for 1h, adding ethylene glycol diglycidyl ether, continuously stirring at the speed of 100r/min for 30min, adding polylactic acid and glutaraldehyde, heating to 60 ℃, stirring at the speed of 300r/min for 50min, standing for defoaming under vacuum for 10h to obtain a stock solution, extruding the stock solution into a coagulating bath (ethanol, water and calcium chloride are mixed according to the weight ratio of 10: 10: 1, then regulating the pH value to 3 with hydrochloric acid), stretching, washing with water, and drying to obtain the wig material.

Example 4:

an environment-friendly wig material comprises the following components in parts by weight:

30 parts of polylactic acid, 10 parts of modified collagen, 30 parts of composite cellulose, 5 parts of chitosan grafted HPMCP, 0.1 part of glutaraldehyde, 3 parts of sodium hydroxide, 3 parts of urea, 1 part of ethylene glycol diglycidyl ether and 300 parts of water.

Wherein the composite cellulose is prepared by oxidizing cellulose with TEMPO, cellulose and cellulose nano-microcrystal according to the weight ratio of 1: 5: 1.

The modified collagen is vegetable tannin modified collagen, and the preparation method comprises the following steps:

adding collagen into phosphoric acid buffer solution, heating to 70 ℃, stirring for 30min, cooling to 40 ℃, adding plant tannin, wherein the weight ratio of the collagen to the plant tannin is 3: 1, continuously reacting for 5 hours, transferring the reaction solution into a dialysis bag for dialysis for 20 hours, wherein the dialysis solution is water, centrifuging the dialyzed solution, and freezing and drying the obtained solid at low temperature.

The preparation method of the chitosan grafted HPMCP comprises the following steps:

s1: fully swelling HPMCP by using ethanol with the weight 10 times that of the HPMCP to obtain a solution A;

s2: under the protection of inert gas, cooling MES buffer solution with pH of 5 and mass concentration of 5.8g/L to below 0 ℃, dropwise adding the solution A, then adding EDC and NHS, reacting at the temperature for 2 hours, dropwise adding chitosan/acetic acid solution with mass concentration of 15g/L into a reaction system, reacting at room temperature for 20 hours, adding methanol, uniformly stirring, adding sodium hydroxide, cooling the reaction solution to 0 ℃, and stirring for 1 hour;

s3: filtering, washing the obtained solid with water to neutrality, and freeze-drying at low temperature.

The preparation method of the environment-friendly wig material comprises the following steps:

adding sodium hydroxide and urea into water, stirring for dissolving, cooling to below 0 ℃, adding modified collagen and composite cellulose, stirring at the speed of 50r/min for 10min, standing for 1h, adding ethylene glycol diglycidyl ether, continuously stirring at the speed of 50r/min for 30min, adding polylactic acid and glutaraldehyde, heating to 50 ℃, stirring at the speed of 300r/min for 30min, standing for defoaming at vacuum for 10h to obtain a stock solution, extruding the stock solution into a coagulating bath (ethanol, water and calcium chloride are mixed according to the weight ratio of 10: 10: 1, then regulating the pH value to 3 with hydrochloric acid), stretching, washing with water, and drying to obtain the wig material.

Example 5:

an environment-friendly wig material comprises the following components in parts by weight:

40 parts of polylactic acid, 15 parts of modified collagen, 40 parts of composite cellulose, 10 parts of chitosan grafted HPMCP, 1 part of glutaraldehyde, 5 parts of sodium hydroxide, 3-5 parts of urea, 1-2 parts of ethylene glycol diglycidyl ether and 400 parts of water.

Wherein the composite cellulose is prepared by oxidizing cellulose with TEMPO, cellulose and cellulose nano-microcrystal according to the weight ratio of 3: 10: 1.

The modified collagen is vegetable tannin modified collagen, and the preparation method comprises the following steps:

adding collagen into phosphoric acid buffer solution, heating to 75 ℃, stirring for 50min, cooling to 50 ℃, adding plant tannin, wherein the weight ratio of the collagen to the plant tannin is 5: 1, continuously reacting for 10 hours, transferring the reaction solution into a dialysis bag for dialysis for 25 hours, wherein the dialysis solution is water, centrifuging the dialyzed solution, and freezing and drying the obtained solid at low temperature.

The preparation method of the chitosan grafted HPMCP comprises the following steps:

s1: fully swelling HPMCP by using ethanol with the weight 10 times that of the HPMCP to obtain a solution A;

s2: under the protection of inert gas, cooling MES buffer solution with pH of 5.4 and mass concentration of 6g/L to below 0 ℃, dropwise adding the solution A, then adding EDC and NHS, reacting for 5 hours at the temperature, dropwise adding chitosan/acetic acid solution with mass concentration of 25g/L into a reaction system, reacting for 25 hours at room temperature, adding methanol, uniformly stirring, adding sodium hydroxide, cooling the reaction solution to 0 ℃, and stirring for 3 hours;

s3: filtering, washing the obtained solid with water to neutrality, and freeze-drying at low temperature.

The preparation method of the environment-friendly wig material comprises the following steps:

adding sodium hydroxide and urea into water, stirring for dissolving, cooling to below 0 ℃, adding modified collagen and composite cellulose, stirring at the speed of 100r/min for 20min, standing for 3h, adding ethylene glycol diglycidyl ether, continuously stirring at the speed of 100r/min for 50min, adding polylactic acid and glutaraldehyde, heating to 60 ℃, stirring at the speed of 500r/min for 50min, standing for defoaming for 15h under vacuum to obtain a stock solution, extruding the stock solution into a coagulating bath (ethanol, water and calcium chloride are mixed according to the weight ratio of 10: 10: 1, then regulating the pH to 3 with hydrochloric acid), stretching, washing with water, and drying to obtain the wig material.

Example 6:

an environment-friendly wig material comprises the following components in parts by weight:

32 parts of polylactic acid, 10 parts of modified collagen, 30 parts of composite cellulose, 5 parts of chitosan grafted HPMCP, 0.1 part of glutaraldehyde, 4 parts of sodium hydroxide, 3 parts of urea, 1 part of ethylene glycol diglycidyl ether and 300 parts of water.

Wherein the composite cellulose is prepared by oxidizing cellulose with TEMPO, cellulose and cellulose nano-microcrystal according to the weight ratio of 2: 5: 1.

The modified collagen is vegetable tannin modified collagen, and the preparation method comprises the following steps:

adding collagen into phosphoric acid buffer solution, heating to 75 ℃, stirring for 30min, cooling to 40 ℃, adding plant tannin, wherein the weight ratio of the collagen to the plant tannin is 4: 1, continuously reacting for 10 hours, transferring the reaction solution into a dialysis bag for dialysis for 20 hours, wherein the dialysis solution is water, centrifuging the dialyzed solution, and freezing and drying the obtained solid at low temperature.

The preparation method of the chitosan grafted HPMCP comprises the following steps:

s1: fully swelling HPMCP by using ethanol with the weight 10 times that of the HPMCP to obtain a solution A;

s2: under the protection of inert gas, cooling MES buffer solution with pH of 5.2 and mass concentration of 5.8g/L to below 0 ℃, firstly dripping solution A into the MES buffer solution, then adding EDC and NHS, reacting for 5 hours at the temperature, then dripping chitosan/acetic acid solution with mass concentration of 20g/L into a reaction system, recovering room temperature for reaction for 20 hours, adding methanol and uniformly stirring, then adding sodium hydroxide, cooling the reaction solution to 0 ℃, and stirring for 1 hour;

s3: filtering, washing the obtained solid with water to neutrality, and freeze-drying at low temperature.

The preparation method of the environment-friendly wig material comprises the following steps:

adding sodium hydroxide and urea into water, stirring for dissolving, cooling to below 0 ℃, adding modified collagen and composite cellulose, stirring at the speed of 100r/min for 15min, standing for 3h, adding ethylene glycol diglycidyl ether, continuously stirring at the speed of 50r/min for 40min, adding polylactic acid and glutaraldehyde, heating to 50 ℃, stirring at the speed of 400r/min for 30min, standing for defoaming for 15h under vacuum to obtain a stock solution, extruding the stock solution into a coagulating bath (ethanol, water and calcium chloride are mixed according to the weight ratio of 10: 10: 1, then regulating the pH to 3 with hydrochloric acid), stretching, washing with water, and drying to obtain the wig material.

Comparative example 1:

comparative example 1 is substantially the same as example 1 except that collagen was not subjected to modification treatment.

Comparative example 2:

comparative example 2 is substantially the same as example 1 except that the composite cellulose is replaced with cellulose.

Comparative example 3:

comparative example 3 is substantially the same as example 1 except that no chitosan-grafted HPMCP was added.

Comparative example 4:

comparative example 4 is essentially the same as example 1 except that ethylene glycol diglycidyl ether is not added.

And (3) performance testing:

referring to GB/T14337-2008 "test method for tensile properties of chemical fibers and short fibers", a fiber tensile tester is used for testing the mechanical strength of the wig materials prepared in examples 1-6 and comparative examples 1-4 of the present invention, the wig materials are taken out after being soaked in water at 100 ℃ for 60min, and after being dried by a blower, the wig materials are subjected to mechanical strength test again, and the test results are shown in the following table 1:

TABLE 1

As shown in the above Table 1, the wig material prepared by the invention has good mechanical properties, and the breaking strength is more than or equal to 16.09cN dtex^-1The elongation at break is more than or equal to 65.28 percent, and the related mechanical properties of the wig material are not reduced too much after being soaked in water at 100 ℃, which shows that the wig material can be sterilized and cleaned by hot water and is more convenient to use.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.