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Chemically cross-linked modified alginate fiber and preparation method thereof

A technology of alginate fiber and chemical cross-linking, which is applied in the direction of alginate artificial filament, etc., can solve the problem of low strength of alginate fiber, and achieve the effects of low processing energy consumption, simple process and obvious reinforcement effect

Active Publication Date: 2017-02-22
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a method for chemically cross-linking modified alginate fibers to enhance the mechanical properties of alginate fibers and meet the requirements of actual processing and application requirements

Method used

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  • Chemically cross-linked modified alginate fiber and preparation method thereof
  • Chemically cross-linked modified alginate fiber and preparation method thereof
  • Chemically cross-linked modified alginate fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This example discloses a chemically cross-linked modified alginate fiber prepared by the following method:

[0028] Dissolve 2g of sodium alginate and 0.2g of polyethylene glycol diglycidyl ether in 100ml of water with a pH value of 10 (adjust the pH with NaOH solution), react in a water bath at 60°C for 1 hour, and let it stand for defoaming after the reaction is completed. The fiber is extruded into a 3% calcium chloride aqueous solution through a spinning machine, and the fiber is taken out after being solidified and shaped, drawn and dried to obtain a chemically cross-linked modified alginate fiber. The breaking strength of the chemically cross-linked modified alginate fiber was 2.13cN / dtex.

[0029] The structure and preparation process of the chemically cross-linked modified alginate fiber in this example are as follows: figure 1 As shown, the preparation process of chemically cross-linked modified alginate fibers in this example is: the epoxy groups at both ends...

Embodiment 2

[0032] This embodiment discloses a double network reinforced calcium alginate fiber, which is prepared by the following method:

[0033] Dissolve 2g of sodium alginate and 0.4g of polyethylene glycol diglycidyl ether in 100ml of water with a pH value of 10 (adjust the pH with NaOH solution), react in a water bath at 60°C for 1 hour, and let it stand for defoaming after the reaction is completed. The fiber is extruded into a 3% calcium chloride aqueous solution through a spinning machine, and the fiber is taken out after being solidified and shaped, drawn and dried to obtain a chemically cross-linked modified alginate fiber. The breaking strength of the chemically cross-linked modified alginate fiber was 2.16cN / dtex.

Embodiment 3

[0035] This embodiment discloses a double network reinforced calcium alginate fiber, which is prepared by the following method:

[0036] Dissolve 2g of sodium alginate and 0.6g of polyethylene glycol diglycidyl ether in 100ml of water with a pH value of 10 (adjust the pH with NaOH solution), react in a water bath at 60°C for 1 hour, and let it stand for defoaming after the reaction is completed. The fiber is extruded into a 3% calcium chloride aqueous solution through a spinning machine, and the fiber is taken out after being solidified and shaped, drawn and dried to obtain a chemically cross-linked modified alginate fiber. The breaking strength of the chemically cross-linked modified alginate fiber was 2.47cN / dtex.

[0037] The breaking strength analysis of the cross-linked modified alginate fiber in this embodiment is as follows: image 3 As shown, both the pure alginate fiber and the chemically cross-linked modified alginate fiber are prepared from sodium alginate with a m...

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Abstract

The invention discloses a chemically cross-linked modified alginate fiber and a preparation method thereof. The chemically cross-linked modified alginate fiber is formed by dissolving a pH adjusting agent, sodium alginate and a crosslinking agent in water, and conducting crosslinking and solidification, wherein the concentration of the pH adjusting agent is 0.05 to 0.15 mol / L, the concentration of the sodium alginate is 1% to 3%, and the mass ratio of the sodium alginate to the crosslinking agent is 100: 10 to 100: 50. The chemically cross-linked modified alginate fiber has high fiber breaking strength; in the preparation process of the chemically cross-linked modified alginate fiber, the cross-linking degree of alginate is controlled by controlling the amount of the crosslinking agent so as to adjust the balance between fiber strength and spinning fluid processing performance and meet the actual processing and application requirements.

Description

technical field [0001] The invention relates to alginate fiber technology, in particular to a chemically cross-linked modified alginate fiber and a preparation method thereof. Background technique [0002] my country is a large ocean country with abundant marine resources, but the utilization rate of marine resources is very low. Alginate is a natural marine biomass material with a wide range of raw materials, low energy consumption for processing, and alginate products can be degraded by microorganisms. Improving the utilization rate of alginate can increase the utilization rate of marine resources in our country. [0003] As a natural polymer material, alginate has been widely used in the fields of biomedicine, food, sewage treatment, agriculture and textile due to its good biocompatibility, natural degradability and high flame retardancy. However, the mechanical properties of traditional alginate fibers are insufficient. Improving the mechanical properties of alginate fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/04C08B37/04
CPCC08B37/0084D01F9/04
Inventor 张鸿祝国富李会涛陈涛孟驰涵曹仕文
Owner DALIAN POLYTECHNIC UNIVERSITY
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