Preparation method and application of ecological finishing agent used for cellulose and protein fiber fabrics

A protein fiber and finishing agent technology, applied in fiber treatment, plant fiber, animal fiber, etc., can solve the problems of unsatisfactory fixing effect of single polycarboxylic acid and fabric, harm to human body and environment, and decrease of fabric strength, etc. Low price, pollution avoidance, shelf life extension effect

Inactive Publication Date: 2014-02-26
安徽甲特生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aldehyde reagents have high reactivity to hydroxyl and amine groups, but are poor in environmental protection. They are harmful to the human body and the environment and the strength of the fabric is significantly reduced. The polycarboxylic acids used are citric acid and tartaric acid, which are formaldehyde-free. It is an environmentally friendly additive, but the fixation effect of single polycarboxylic acid and fabric is mostly not ideal. Butane tetracarboxylic acid (BTCA) is considered to be a good crosslinking agent, but it is expensive and slightly water soluble. Poor, has certain toxicity and affects its application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Get glacial acetic acid 1.92g, deionized water 94.08g to be made into the acetic acid aqueous solution of concentration 2%, then choose the chitosan 3g that deacetylation degree is 90%, average molecular weight 7000, 3g chitosan is dissolved in 97g acetic acid Aqueous solution, heated to 70°C and fully stirred to form a uniform colloidal solution of chitosan acetate after completely dissolving.

[0028] (2) Fully dissolve 3 g of citric acid, 3 g of malic acid and 6 g of magnesium chloride in 88 g of deionized water. Under high-speed stirring, slowly drop 10g / L agar solution into the chitosan sol, control the size of the chitosan colloid particles at 80-100nm, and form a stable acetate chitosan colloid solution. Using 0.5mol / L sodium hydroxide solution to adjust the pH value of the chitosan acetate colloid to 7 to form a finishing agent.

[0029] (3) Control the temperature of the finishing agent at 30°C, soak a piece of ordinary cotton gauze in the finishing agent ...

Embodiment 2

[0032] (1) Get glacial acetic acid 1.84g, deionized water 90.16g to be made into the acetic acid aqueous solution of concentration 2%, then choose the chitosan 8g that deacetylation degree is 80%, average molecular weight 5000, 8g chitosan is dissolved in 92g acetic acid Aqueous solution, heated to 70°C and fully stirred to form a uniform colloidal solution of chitosan acetate after completely dissolving.

[0033] (2) Fully dissolve 2 g of citric acid, 2 g of sodium ethylate, and 2 g of sodium hypophosphite in 94 g of deionized water. Under high-speed stirring, slowly drop 10g / L agar solution into the chitosan colloidal solution to control the size of the chitosan colloidal particles at 80-100nm to form a stable chitosan acetate colloidal solution. Using 1mol / L triethanolamine (TEA) solution to adjust the pH value of the chitosan acetate colloid to 7 to form a finishing agent.

[0034] (3) The temperature of the chitosan finishing agent is controlled at 35° C., a piece of com...

Embodiment 3

[0037] (1) Get glacial acetic acid 1.41g, deionized water 92.59g to be made into the acetic acid aqueous solution of concentration 1.5%, choose the chitosan 6g that deacetylation degree is 90%, average molecular weight 4000 again, 6g chitosan is dissolved in 94g acetic acid Aqueous solution, heated to 70°C and fully stirred to form a uniform colloidal solution of chitosan acetate after completely dissolving.

[0038] (2) Fully dissolve 2 g of malic acid, 3 g of sodium ethoxide, and 3 g of magnesium chloride in 92 g of deionized water. Under high-speed stirring, slowly drop 10g / L agar solution into the chitosan sol, control the size of the chitosan colloid particles at 80-100nm, and form a stable acetate chitosan colloid solution. Using 0.5mol / L sodium hydroxide solution to adjust the pH value of the chitosan acetate colloid to 7 to form a finishing agent.

[0039] (3) Control the temperature of the chitosan acetate finishing agent at 30°C, soak a piece of ordinary viscose fib...

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PUM

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Abstract

The invention relates to a preparation method and application of a deacetylated chitosan ecological finishing agent used for finishing natural fibers and regenerated natural fiber fabrics. The invention aims to solve the technical problems of a crosslinking problem, size and uniformity of chitosan acetic acid sol particles and stability of the finishing agent. The method is technically characterized by comprising the following steps: mixing chitosan and lacial acetic acid to form an acetic acid aqueous solution with the acetic acid concentration of 1.5-3 percent, dripping a 10g/L of ion stabilizer agar solution, regulating the size of the chitosan colloid particles to be in a distribution range of 60-100nm, forming a uniform and stable acetic acid-chitosan colloid solution of which the colloid size is in a nanoscale, controlling the pH value to be 4-7, wherein the viscosity of the colloid solution is 2-60mPa.s. The method has good chitosan fixation effect, does not have harmful or chemical residues and is environment-friendly, high-efficiency, harmless to human bodies and rich in raw material source.

Description

technical field [0001] The invention relates to a preparation method of a chitosan ecological finishing agent used for finishing natural fibers and regenerated natural fiber fabrics, and the application of fabric finishing with good ecological and environmental protection. Background technique [0002] Chitosan is a water-soluble aminopolysaccharide polymer linear polyamine. Its good biocompatibility, antibacterial and antibacterial properties, and multiple functions have attracted extensive attention. It is widely used in biomedicine, textiles, and light industry. Food, agriculture, chemical industry and many other fields are being widely used. At home and abroad, chitosan has been used to prepare medical fibers, nanofibers and their non-woven fabrics. Due to the difficulty of fiber processing, high equipment performance requirements, large capital investment, and long research cycles, etc., it has affected its actual use to a certain extent. application. At present, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/03D06M13/188D06M13/192D06M101/10D06M101/06
Inventor 赵凤李玲
Owner 安徽甲特生物科技有限公司
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