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Soybean protein fiber bleaching composition and bleacing method thereof

A technology for soybean protein fiber and composition, applied in the field of bleaching compositions, can solve the problems of difficult control of bleaching process, breakage of peptide bonds of soybean protein, influence on bleaching effect, etc., and achieves broad application prospects, protection of health and health care, and improvement of bleaching effect. Effect

Inactive Publication Date: 2007-09-19
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the bleaching effect of peracetic acid is better, peracetic acid is easy to decompose, such as heating, heavy metal ions, changes in pH value, etc. can cause the decomposition of peracetic acid, which makes it difficult to control the bleaching process and affects the bleaching effect. At the same time, it will also affect soybean protein. Peptide bonds produce breakage, which affects the strength of soybean fiber and limits its application

Method used

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  • Soybean protein fiber bleaching composition and bleacing method thereof
  • Soybean protein fiber bleaching composition and bleacing method thereof
  • Soybean protein fiber bleaching composition and bleacing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Mix 2g of sodium borohydride and 3.86g of sodium bisulfite in the feeding tank, then add 80ml of distilled water to dilute, and then add 12ml of pre-prepared hydrogen peroxide and thiourea compound with a concentration of 50g / L, hydrogen peroxide and thiourea The molar ratio is 1:1, and then add 5mL of penetrant JFC with a concentration of 20g / L, adjust the pH of the bleaching solution to about 10 with sodium bicarbonate, heat the bleaching solution to 50°C, put it into the fabric, and then continue to heat up to 90°C , Keep for 20min, take it out, wash with 1g / L acetic acid aqueous solution, wash with warm water, and dry.

[0026] Refer to Figure 1, which is the infrared absorption spectrum of the fiber measured before using the soybean protein fiber bleaching method of the present invention; refer to Figure 2, which is the infrared absorption spectrum of the fiber measured after the soybean protein fiber bleaching method described above Figure: The test uses Nicolet's Mag...

Embodiment 2

[0033]Add 2g of sodium borohydride to an 80mL water bath containing 3.86g of sodium bisulfite and fabric, and then add 12mL of a pre-prepared hydrogen peroxide and thiourea compound with a concentration of 50g / L, the molar ratio of which is 1:1, Add 5mL of JFC penetrant with a concentration of 20g / L, adjust the pH of the bleaching solution to about 9 with sodium bicarbonate, heat the bleaching solution to 90℃, keep it for 20min, take it out, wash with 1g / L acetic acid aqueous solution, and wash with warm water. Let dry. The whiteness of the fabric after bleaching was 80.2. This shows that the addition of borohydride and sodium bisulfite is more flexible and can be determined according to specific conditions.

Embodiment 3

[0035] Add 2g of sodium borohydride to an 80mL water bath containing 3.86g of sodium bisulfite and fabric, and then add 12mL of a pre-prepared hydrogen peroxide and thiourea compound with a concentration of 50g / L, the molar ratio of which is 1:1. Add 1g / L penetrant JFC, adjust the pH of the bleaching solution to about 9.5 with sodium bicarbonate, heat the bleaching solution to 70°C, keep it for 60min, take it out, wash with 1g / L acetic acid solution, wash with warm water, and dry. The whiteness of the fabric after bleaching was 79.6. In the case of low requirements for bleaching, the bleaching composition can be used for low-temperature slow bleaching to save energy.

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Abstract

The present invention discloses a bleaching compound for bleaching soybean protein fibre or its blended fabric. Said bleaching compound mainly is formed from bleaching agent and activating agent, the bleaching agent is product prepared by using sodium borohydride and sodium bisulfite, and the activating agent is the compound formed from sulphourea and hydroperoxide and penetrating agent, etc. Besides, said invention also provides the application method of said bleaching compound.

Description

Technical field [0001] The invention relates to the technical field of textile dyeing and finishing, in particular to a bleaching composition for bleaching soybean protein fibers and a method of use thereof. Background technique [0002] Soy protein fiber is the only new type of comfort fiber independently developed in our country. It is a kind of regenerated plant protein fiber that meets people's requirements for green products. Moreover, soybean protein contains various amino acids that are beneficial to the human body. The healthy health fiber has attracted wide attention at home and abroad. [0003] However, soy protein fiber fabrics have been exposed to prominent problems such as easy pilling, low whiteness of bleached fabrics, poor color, poor depth of dyeing, and poor leveling properties during processing and consumption. The most important technology is The difficulty lies in the bleaching of soy protein fibers. This is because the colored compon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06L3/02D06L4/12D06L4/13
Inventor 郑敏唐人成
Owner SUZHOU UNIV
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