Antibacterial and shrink-proof finishing method for wool fiber product based on catalytic grafting crosslinking

By pretreatment of alkali alcohol solution and graft crosslinking of modified amino macromolecules on wool fiber products, combined with the reduction and deposition of silver nitrate, the problems of anti-shrinkage and antibacteriality of wool fiber products are solved, and the comprehensive improvement of low felt shrinkage, zero strength loss and high-efficiency and long-lasting antibacterial effects are achieved.

CN119900172AActive Publication Date: 2025-04-29JIANGNAN UNIV
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Patent Information

Application Number
CN202510002290.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-02
Publication Date
2025-04-29
Estimated Expiration
2045-01-02

AI Technical Summary

Technical Problem

In dyeing and finishing processing, wool fiber products are subject to subtraction and anti-feeding and finishing, which is easy to cause fiber damage; the existing wool anti-bacterial finishing process has the disadvantages of complex finishing processes, short-lasting effects and affecting the feel of the fiber, making it difficult to achieve long-lasting and stable anti-shrinkage and anti-bacterial effects.

Method used

The wool is pretreated by alkali alcohol solution to remove the outer layer of fiber scales and improve the accessibility of cystine; then, using lipoic acid and amino macromolecules as raw materials to prepare modified amino macromolecules containing side groups of disulfide bonds, grafting and cross-linking are performed through a one-bath two-step method, and silver nitrate is added to the aqueous solution of the modified amino macromolecules, and nanosilver is deposited through a reduction reaction, giving the wool fiber products anti-shrinkage and antibacterial effects.

Benefits of technology

The anti-shrinkage effect with low felt rate and zero strength loss is achieved, and the fiber feels good; at the same time, through the deposition of nano silver, an efficient and long-lasting antibacterial effect is obtained, avoiding the disadvantages of fiber damage and contamination in traditional methods.

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Abstract

The invention belongs to the technical field of textile dyeing and finishing, and provides a wool fiber product antibacterial shrink-proof finishing method based on catalytic grafting crosslinking, which comprises the following steps: dissolving potassium hydroxide in ethanol to prepare an alkali alcohol solution, and impregnating a wool fiber product with the alkali alcohol solution to obtain a pretreated wool fiber product; the preparation method comprises the following steps: synthesizing modified amino macromolecules containing disulfide bond side groups by taking lipoic acid and amino macromolecules as main raw materials; and impregnating the pretreated wool fiber product with the modified amino macromolecule aqueous solution, and then adding silver nitrate for impregnation to prepare the antibacterial shrink-proof wool fiber product. According to the antibacterial shrink-proof finishing method, a modified amino macromolecule cross-linked network layer is formed on the surface of the wool fiber product, the fiber strength is not damaged, and the wool is endowed with an anti-felting effect; and by adopting the modified amino macromolecules which have antibacterial property and reducibility and can be coordinated and combined with nano-silver, silver ions are promoted to be reduced and deposited on the surface of the wool fiber, and the antibacterial effect of the wool fiber product is improved.
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