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Preparation method of chitosan oligosaccharide grafted cellulose fiber

A technology of cellulose fiber and preparation process, which is applied in fiber treatment, plant fiber, biochemical fiber treatment, etc. It can solve the problems of epichlorohydrin toxicity, fiber mutual bonding, fiber hardening, etc., and achieves low environmental pollution and excellent preparation process. Simple, graft-stabilized effect

Active Publication Date: 2019-01-01
HMEI THREAD CO LTD OF YINBIN SICHUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But still there is following defect in this method: 1, when hydroxypropyl chitosan oligosaccharide reacts with fiber under the condition that bisglycidyl ether exists, hydroxypropyl chitosan oligosaccharide can react between itself, and the product of generation can adhere to The surface of the fiber is not easy to remove; 2. Using bisglycidyl ether as a crosslinking agent will cause the fibers to stick to each other, resulting in fiber hardening and poor hand feeling; Sugar is dangerous

Method used

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  • Preparation method of chitosan oligosaccharide grafted cellulose fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A, sodium methacryl sulfonate—preparation of chitosan oligosaccharide

[0035] In the pretreatment tank a, weigh a certain amount of chitosan oligosaccharide, add hot water in proportion (it can speed up the dissolution of chitosan oligosaccharide), prepare a chitosan oligosaccharide solution with a mass concentration of 10-30%, and cool to room temperature; Weigh a certain amount of sodium methyl propylene sulfonate, the amount is 0.65-1.45 times the mass of chitosan oligosaccharide, add it to the chitosan oligosaccharide solution, the stirring speed is 150-300 rpm, and obtain a uniform solution after dissolving; gradually increase the temperature , the heating rate is 1-8°C / min, when the solution temperature reaches 60-95°C, add potassium persulfate in proportion, the dosage is 2-12% of the mass of chitosan oligosaccharide and sodium methacrylate; 95°C, the stirring rate is 150-300 rpm, and the reaction is 2-5h. After the reaction is completed, the solution is filter...

Embodiment 2

[0041] A, sodium methacryl sulfonate—preparation of chitosan oligosaccharide

[0042] In the pretreatment tank a, weigh a certain amount of chitosan oligosaccharide, add hot water in proportion (it can speed up the dissolution of chitosan oligosaccharide), and prepare a chitosan oligosaccharide solution with a mass concentration of 10%, and cool it to room temperature; A certain amount of sodium methacrylate, the amount of which is 0.65 times the mass of chitosan oligosaccharide, is added to the chitosan oligosaccharide solution, the stirring speed is 150 rpm, and a uniform solution is obtained after dissolution; the temperature is gradually raised, and the heating rate is 1 °C / min, when the temperature of the solution reaches 60-95°C, add potassium persulfate in proportion, the dosage is 2% of the quality of oligochitosan and sodium methacrylate; , Reaction 2h. After the reaction is completed, the solution is filtered through a filter cloth, and the finally obtained solutio...

Embodiment 3

[0048] A, sodium methacryl sulfonate—preparation of chitosan oligosaccharide

[0049] In the pretreatment tank a, weigh a certain amount of chitosan oligosaccharide, add hot water in proportion (it can speed up the dissolution of chitosan oligosaccharide), and prepare a chitosan oligosaccharide solution with a mass concentration of 30%, and cool it to room temperature; A certain amount of sodium methacryl sulfonate, the dosage is 1.45 times of the quality of oligochitosaccharide, added to the oligochitosaccharide solution, the stirring speed is 300 rpm, and a uniform solution is obtained after dissolution; the temperature is gradually raised, and the heating rate is 8°C / min, when the temperature of the solution reaches 60-95°C, add potassium persulfate in proportion, the dosage is 12% of the quality of oligochitosan and sodium methacryl sulfonate; keep warm at 60-95°C, and stir at 300 rpm , Reaction 5h. After the reaction is completed, the solution is filtered through a filt...

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Abstract

The invention relates to a preparation method of chitosan oligosaccharide grafted cellulose fiber. The preparation method comprises following steps: A, preparation of sodium methallyl sulfonate-chitosan, wherein chitosan oligosaccharide is added into hot water to prepare a chitosan oligosaccharide aqueous solution, the chitosan oligosaccharide aqueous solution is cooled to room temperature, sodiummethallyl sulfonate is added into the chitosan oligosaccharide aqueous solution, an obtained mixture is subjected to stirring and heating, and potassium persulfate is added so as to obtain the sodiummethallyl sulfonate-chitosan oligosaccharide solution; B, cellulose fiber pretreatment, wherein cellulose fiber and soft water are introduced into a pretreatment tank, heating, stirring, water discharging, dehydration, and drying are carried out so as to obtain pretreated cellulose fiber; and C, preparation of chitosan oligosaccharide grafted cellulose fiber, wherein the cellulose fiber obtainedin step B is introduced into a reaction vessel, the sodium methallyl sulfonate-chitosan oligosaccharide solution obtained in step A is added, water is added, and stirring, heating, and centrifugal dewatering are carried out so as to obtain the chitosan oligosaccharide grafted cellulose fiber.

Description

technical field [0001] The invention relates to the technical field of cellulose fiber surface graft modification, in particular to a preparation process of chitosan oligosaccharide grafted cellulose fiber. Background technique [0002] Cellulose fiber is a synthetic fiber obtained by reshaping and spinning natural cellulose after dissolution. Cellulose is a linear high molecular polymer composed of D-glucopyranose rings linked by β-1,4 glycosidic bonds. After the cellulose is remolded, the crystallinity of the fiber is lower than that of natural fibers such as cotton fiber. Therefore, the hydroxyl content in the molecular structure of the cellulose fiber increases. However, this also causes the moisture content of the cellulose fiber to increase. The state strength is reduced. Moreover, the enzymes secreted by microorganisms are more likely to destroy the fiber structure, making the fiber lose its use value. [0003] Oligochitosan is a low-molecular-weight chitosan with a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/03D06M101/06
CPCD06M15/03D06M16/00D06M2101/06
Inventor 廖周荣黄金洪陈浩赵志远张小霞钟波
Owner HMEI THREAD CO LTD OF YINBIN SICHUAN
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