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Cysteine coupled protein grafted regenerated cellulose fiber material and preparation method thereof

A cysteine-coupled protein, regenerated cellulose technology, applied in fiber processing, plant fibers, textiles and papermaking, etc., can solve problems such as destroying cellulose structure and affecting fiber properties, achieving broad application prospects and improving mechanical properties. performance, the effect of improving graft fastness

Active Publication Date: 2021-08-13
当阳市鸿阳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

but C 2 、C 3 The ring-opening oxidation of the position will destroy the original structure of the cellulose and affect the performance of the fiber itself, such as biodegradability, high crystallinity, etc.

Method used

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  • Cysteine coupled protein grafted regenerated cellulose fiber material and preparation method thereof
  • Cysteine coupled protein grafted regenerated cellulose fiber material and preparation method thereof
  • Cysteine coupled protein grafted regenerated cellulose fiber material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Taking a representative protein---collagen as an example, take 2g of regenerated cellulose fiber (taking lyocell fiber as an example), wash it three times with deionized water, and prepare 100ml of sodium hydroxide solution with a mass fraction of 2%. , take out the washed fiber, put it into the prepared sodium hydroxide solution, completely impregnate the fiber with a glass rod, put it into a constant temperature water bath at 40°C, stir and wash it with a glass rod for 10 minutes, and take it out Fiber, then put the fiber into 50ml of absolute ethanol solution, completely impregnate the fiber with a glass rod, put it into a constant temperature water bath at 40°C, stir and wash it with a glass rod for 8min, take out the fiber and wait for ethanol Volatile, and then put into the oven to dry to constant weight.

[0036] The preparation mass fraction is 8% H 2 o 2 solution, add impurity-removing regenerated cellulose fibers and stir evenly, react in a constant temperat...

Embodiment 2

[0040] Taking a representative protein---collagen as an example, take 2g of regenerated cellulose fiber (taking lyocell fiber as an example), wash it three times with deionized water, and prepare 100ml of sodium hydroxide solution with a mass fraction of 2%. , take out the washed fiber, put it into the prepared sodium hydroxide solution, completely impregnate the fiber with a glass rod, put it into a constant temperature water bath at 40°C, stir and wash it with a glass rod for 10 minutes, and take it out Fiber, then put the fiber into 50ml of absolute ethanol solution, completely impregnate the fiber with a glass rod, put it into a constant temperature water bath at 40°C, stir and wash it with a glass rod for 8min, take out the fiber and wait for ethanol Volatile, and then put into the oven to dry to constant weight.

[0041] Prepare H with a mass fraction of 10% 2 o 2 solution, add impurity-removing regenerated cellulose fibers and stir evenly, react in a constant temperat...

Embodiment 3

[0045] Taking a representative protein---collagen as an example, take 2g of regenerated cellulose fiber (taking lyocell fiber as an example), wash it three times with deionized water, and prepare 100ml of sodium hydroxide solution with a mass fraction of 2%. , take out the washed fiber, put it into the prepared sodium hydroxide solution, completely impregnate the fiber with a glass rod, put it into a constant temperature water bath at 40°C, stir and wash it with a glass rod for 10 minutes, and take it out Fiber, then put the fiber into 50ml of absolute ethanol solution, completely impregnate the fiber with a glass rod, put it into a constant temperature water bath at 40°C, stir and wash it with a glass rod for 8min, take out the fiber and wait for ethanol Volatile, and then put into the oven to dry to constant weight.

[0046] Prepare 100ml of cysteine ​​solution with a mass fraction of 4%, adjust its pH value to 7.0 with sodium hydroxide, then put the oxidized fiber into the ...

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Abstract

The invention discloses a cysteine coupled protein grafted regenerated cellulose fiber material and a preparation method thereof. The preparation method comprises the following steps of firstly, washing regenerated cellulose fibers with deionized water, a sodium hydroxide solution and ethanol for three times in sequence, and then carrying out C6-site selective oxidation on the regenerated cellulose fibers by using a TEMPO / NaClO / NaBr / H2O2 quaternary composite oxidation system as a catalytic oxidant, and putting the fibers into a cysteine solution for reaction, finally putting the fibers into a protein solution for reaction, adding a proper amount of acid for catalysis, taking out the fibers, washing, and drying to constant weight. According to the method for performing covalent bond surface grafting on the oxidized regenerated cellulose fibers and the protein by using cysteine as a coupling agent, the mechanical property of the regenerated cellulose fibers is improved, the grafting rate is high, and the regenerated cellulose fibers are endowed with a good skin-friendly characteristic of the protein fibers, and good application prospects are realized in the field of medical textile materials.

Description

technical field [0001] The invention relates to the technical field of fiber material modification, in particular to a cysteine ​​coupling protein grafted regenerated cellulose fiber material and a preparation method thereof. Background technique [0002] Regenerated cellulose fiber is made of natural cellulose (cotton, hemp, bamboo, tree, shrub) as raw material, does not change its chemical structure, only changes the physical structure of natural cellulose, so as to produce regenerated cellulose fiber with better performance . Its structure is similar to that of cotton, except that its hygroscopicity and air permeability are better than cotton fibers. It can be said that it is the best hygroscopicity and air permeability of all chemical fibers. In addition, it has high thermal stability and light stability, and does not suffer from static electricity; its strength and elongation can meet the needs of most textiles, and it has good spinnability. However, the skin affinity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/342D06M15/15D06M101/06
CPCD06M15/15D06M13/342D06M2101/06
Inventor 叶小波董雄伟方斌王慧鹏
Owner 当阳市鸿阳新材料科技有限公司
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