Method for preparing shoe antibacterial synthesis leather substrate and liner through O-carboxymethyl chitosan grafted nylon 66 fabric

A technology of carboxymethyl chitosan and synthetic leather base material, applied in textile and papermaking, fiber type, fiber treatment and other directions, can solve the problems of decreased antibacterial properties of leather products, environmental pollution, and unsatisfactory antibacterial durability, etc. To achieve the effect of improving air permeability, improving hygienic performance, and good antibacterial effect

Active Publication Date: 2015-10-14
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most antibacterial nylon fabrics endow nylon fabrics with antibacterial ability through physical modification, and the antibacterial agents used will cause certain pollution to the environment during the migration process.
At the same time, due to the gradual loss of antibacterial agents, the antibacterial properti...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Step 1: Put nylon 66 fabric (plain weave density 165g / m 2 ) Cut into square fabrics, add 6% sulfuric acid, and then partially hydrolyze. Among them, add 5g nylon 66 fabric per 100ml sulfuric acid; soak for 2h at room temperature, then wash the partially hydrolyzed nylon 66 fabric with distilled water , Then adjust its pH to neutral, and finally take out the nylon 66 fabric and wash it with distilled water and dry it;

[0043] Step 2: Add carboxyl protecting agent pyridine methanol and amino protecting agent di-tert-butyl dicarbonate to the tetrahydrofuran solution at a molar ratio of 5:2, wherein 0.5 mmol carboxyl protecting agent is added to each 500 ml of tetrahydrofuran solution; then the equivalent is added Sodium hydroxide / sodium bicarbonate buffer solution to obtain a mixed solution, and then add the nylon 66 fabric treated in step one to the above mixed solution, stir at room temperature for 3 hours until the reaction is complete, and then adjust the pH of the reacti...

Embodiment 2

[0049] Step 1: Put nylon 66 fabric (twill surface density 114g / m 2 ) Cut into cloth strips, add 18% sulfuric acid, and then perform partial hydrolysis, in which 10g nylon 66 fabric is added to 100ml sulfuric acid; immerse for 5 hours at room temperature, and then wash the partially hydrolyzed nylon 66 fabric with distilled water , Then adjust its pH to neutral, and finally take out the nylon 66 fabric and wash it with distilled water and dry it;

[0050] Step 2: Add the carboxyl protecting agent pyridine methanol and the amino protecting agent di-tert-butyl dicarbonate to the tetrahydrofuran solution at a molar ratio of 5:6, wherein 0.5 mmol carboxyl protecting agent is added to every 500 ml of tetrahydrofuran solution; then the equivalent is added Sodium hydroxide / sodium bicarbonate buffer solution to obtain a mixed solution, and then add the nylon 66 fabric treated in step one to the above mixed solution, stir at room temperature for 6 hours until the reaction is complete, and t...

Embodiment 3

[0056] Step 1: Cut nylon 66 superfine fiber spunlace non-woven fabric (fiber fineness: 0.15D) into cloth strips, add 12% sulfuric acid and then perform partial hydrolysis, wherein 8g nylon 66 is added to every 100ml sulfuric acid Fabric; immerse the nylon 66 fabric at room temperature for 3 hours, then wash the partially hydrolyzed nylon 66 fabric with distilled water, then adjust its pH to neutral, and finally take out the nylon 66 fabric and wash with distilled water before drying;

[0057] Step 2: Add the carboxyl protecting agent pyridine methanol and the amino protecting agent di-tert-butyl dicarbonate to the tetrahydrofuran solution at a molar ratio of 5:4, wherein 0.5 mmol carboxyl protecting agent is added to each 500 ml tetrahydrofuran solution; then the equivalent is added Sodium hydroxide / sodium bicarbonate buffer solution to obtain a mixed solution, and then add the nylon 66 fabric treated in step one to the above mixed solution, stir at room temperature for 4 hours un...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

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Abstract

The present invention discloses a method for preparing a shoe antibacterial synthesis leather substrate and a liner through an O-carboxymethyl chitosan grafted nylon 66 fabric. The method comprises: 1) partially hydrolyzing a nylon 66 fabric; 2) carrying out carboxyl protecting and amino protecting ; 3) preparing O-carboxymethyl chitosan; 4) carrying out amino protecting on the O-carboxymethyl chitosan; 5) carrying out an amide condensation reaction on the O-carboxymethyl chitosan and the nylon 66 fabric obtained in the step 2); and 6) removing the amino protecting agent and the carboxyl protecting agent, and washing to obtain the O-carboxymethyl chitosan/nylon 66 shoe antibacterial synthesis leather substrate and the liner. According to the present invention, the chitosan and the nylon 66 base cloth are adopted as the raw materials and the grafting method is used to synthesize the O-carboxymethyl chitosan/nylon 66 shoe synthesis leather substrate and the liner, and the grafted and modified nylon 66 shoe synthesis leather substrate and liner have characteristics of a certain water vapor permeability and good hygiene performance.

Description

Technical field [0001] The invention relates to a preparation method in the technical field of light chemical engineering, in particular to a method for preparing an antibacterial synthetic leather base material and lining for shoes by grafting nylon 66 fabric with O-carboxymethyl chitosan. Background technique [0002] As one of the synthetic leather substrates and linings for shoes, nylon 66 fabric has low fiber density, good wear resistance, fatigue resistance and chemical corrosion resistance, and good mechanical properties, making it widely used in various fields application. [0003] There are many varieties of nylon, which are widely used in clothing, home textiles and industrial fields. Chitosan is the product of deacetylation of chitin. It is widely found in nature. It is one of the most abundant polysaccharides found in nature, and its content is second only to cellulose. Chitosan has special properties, such as good biodegradability, biocompatibility, non-toxicity, non...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06M15/03C08B37/08D06M101/34
Inventor 李慧冯捷
Owner SHAANXI UNIV OF SCI & TECH
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