Protein material capable of absorbing ultraviolet ray and preparation method thereof

A protein and ultraviolet technology, applied in textiles and papermaking, fiber processing, plant fibers, etc., can solve problems affecting the performance of cosmetics, yellowing, etc., and achieve improved ultraviolet protection performance, high fastness, and photo-induced yellowing phenomenon. lightening effect

Inactive Publication Date: 2012-04-11
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The protein powder used in cosmetics and other purposes will also appear yellowing phen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 10g silk fabric or yarn, take o-nitroaniline as the reaction precursor, and the liquor ratio is 1:20.

[0041] The first step: use hydrochloric acid and sodium nitrite to prepare the arylamine compound into a diazonium salt. Under the condition of 0 °C, dissolve 2.3g of o-nitroaniline in 8.9g of concentrated hydrochloric acid and 15g of water, and slowly add the aqueous solution of sodium nitrite dropwise. (1.8g of sodium nitrite and 4g of water), keep the reaction system at 0-5°C, dropwise for about 5 minutes, and after 30 minutes of heat preservation, test with starch-potassium iodide test paper, and destroy excess sodium nitrite with urea. Nitrogen salt solution; then 10g silk fabric is immersed in 200mL of an aqueous solution containing 0.2g / L of sodium hydroxide and 5g / L of sodium carbonate, and cooled to 0°C, then slowly inject the above clarified diazonium salt solution into the system , during which the silk fabric was continuously stirred or oscillated, and aft...

Embodiment 2

[0044] 10g of wool fabric, with p-chloro-o-nitroaniline as the reaction precursor, the liquor ratio is 1:100.

[0045]The first step is to use hydrochloric acid and sodium nitrite to prepare the aromatic amine compound into a diazonium salt. Under the condition of 0 °C, dissolve 0.5g of p-chloro-o-nitroaniline in a mixed solution of 10g of water and 1.5g of concentrated hydrochloric acid, and stir evenly. Then add 0.37g of sodium nitrite to the system, then keep it at 0~5 ℃ for 30min, test it with starch-potassium iodide test paper, and destroy the excess sodium nitrite with urea to obtain a diazonium salt solution; 10g of wool fabric is immersed in 1000mL containing Sodium hydroxide is 0.1g / L, sodium carbonate is 0.5g / L aqueous solution, and cooled to 5 ℃, then slowly inject the above-mentioned clear diazonium salt solution into the system, after the injection is completed, keep the temperature at 5 ℃ for 120min, Then the temperature was raised to room temperature and kept fo...

Embodiment 3

[0048] 10g of real silk yarn, with p-bromo-o-nitroaniline as the reaction precursor, the liquor ratio is 1:50.

[0049] The first step is to use hydrochloric acid and sodium nitrite to prepare the arylamine compound into a diazonium salt. Under the condition of 0 °C, 1 g of p-bromo-o-nitroaniline is dissolved in a mixed solution of 10 mL of concentrated hydrochloric acid and 100 mL of water, and after stirring evenly. Add 0.37g of sodium nitrite to the system, then keep it at 0~5℃ for 30min, test with starch-potassium iodide test paper, and destroy the excess sodium nitrite with urea to obtain a diazonium salt solution; immerse 10g of silk yarn in 500mL containing Sodium hydroxide is 0.2g / L, sodium carbonate is 3.5g / L aqueous solution, and cooled to 3 ℃, then slowly inject the above-mentioned clarified diazonium salt solution into the system, after the injection is completed, keep the temperature at 3 ℃ for 100min, Then the temperature was raised to room temperature and kept f...

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PUM

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Abstract

The invention discloses a protein material capable of absorbing ultraviolet ray and a preparation method thereof. According to the invention, an arylamine compound containing an ortho-nitroaniline structure is subjected to diazotization and then to a coupling reaction with the ortho-position hydroxyl groups of side groups of p-hydroxybenzmethylene in tyrosine residue in protein molecules and produces a structure containing an azo bond with macro-molecular side groups of proteins, and an ortho-hydroxyphenyl-benzotriazole structure is produced through loop closure between the azo bond and ortho-nitro group of an aromatic ring after further treatment with a reducing agent. The ortho-hydroxyphenyl-benzotriazole structure connected with macro-molecular chain of protein has the capability of absorbing ultraviolet ray, which enables a prepared protein material to have the capability of ultraviolet resistance and effectively enhances the functions of ultraviolet resistance and aging resistance of the protein material.

Description

technical field [0001] The invention relates to a method for modifying protein side chain groups, in particular to a protein material with the function of absorbing ultraviolet rays and a preparation method thereof. Background technique [0002] The protein material described in the present invention includes protein fibers alone and textiles made by mixing other types of fibers, or protein powder materials, and the like. Protein fiber is a kind of natural fiber that was used earlier by humans and is still used in a large amount, mainly including natural fibers such as silk, wool, cashmere, poultry feathers, down, rabbit hair, rabbit down, camel hair and human hair and soybean fibers. , milk fibers and other man-made fibers, of which the most used and favored by people are mainly silk and wool fibers. The fabrics made of some protein fibers (such as silk fibers) are relatively light and thin. When worn in summer when the amount of ultraviolet radiation in the sun is relativ...

Claims

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Application Information

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IPC IPC(8): C08H1/00C08H1/06D06M13/392D06M13/432D06M101/12D06M101/04
Inventor 陈维国崔志华孟照成胡青青
Owner ZHEJIANG SCI-TECH UNIV
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