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Double network reinforced calcium alginate fiber and its preparation method

A calcium alginate fiber, reinforced technology, applied in the chemical characteristics of fibers, spinning solution preparation, wet spinning and other directions, can solve problems such as low fiber strength, and achieve low processing energy consumption, obvious enhancement effect, and simple process. Effect

Active Publication Date: 2016-01-20
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 double-network reinforced calcium alginate fiber to achieve high fiber breaking strength and meet the requirements of actual processing and application in view of the low strength of the existing alginate fiber that limits its application. need

Method used

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  • Double network reinforced calcium alginate fiber and its preparation method
  • Double network reinforced calcium alginate fiber and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0025] This embodiment discloses a double network reinforced calcium alginate fiber, which is prepared by the following method:

[0026] Dissolve 4g of sodium alginate, 0.8g of acrylamide, 0.32g of N,N-methylenebisacrylamide and 0.0083g of ammonium persulfate in 200ml of deionized water, react in a water bath at 50°C for 2.5h, and let stand after the reaction is complete Degassing, extruding into 2% calcium chloride aqueous solution, taking out the fibers after curing and molding, drawing and drying to obtain network-reinforced calcium alginate fibers. The breaking strength of double network reinforced calcium alginate fibers is 2.44cN / dtex.

[0027] The structure and preparation process of the double network reinforced calcium alginate fiber in this embodiment are as follows: figure 1 As shown, the preparation process of the network-reinforced calcium alginate fiber in this example is as follows: acrylamide and N,N-methylenebisacrylamide copolymerize to form a covalent cross...

Embodiment 2

[0030] This embodiment discloses a double network reinforced calcium alginate fiber, which is prepared by the following method:

[0031] Dissolve 2g of sodium alginate, 0.2g of acrylamide, 0.02g of N,N-methylenebisacrylamide and 0.0021g of ammonium persulfate in 200ml of deionized water, and react in a water bath at 45°C for 1 hour. foam, extrude into 2% calcium chloride aqueous solution, take out the fiber after curing and molding, draw and dry to obtain network-reinforced calcium alginate fiber.

[0032] The breaking strength of the double network reinforced calcium alginate fiber prepared in this example is 1.34cN / dtex.

Embodiment 3

[0034] This embodiment discloses a double network reinforced calcium alginate fiber, which is prepared by the following method:

[0035] Dissolve 3g of sodium alginate, 0.45g of acrylamide, 0.08g of N,N-methylenebisacrylamide and 0.0053g of ammonium persulfate in 200ml of deionized water, and react in a water bath at 60°C for 3 hours. foam, extrude into 2% calcium chloride aqueous solution, take out the fiber after curing and molding, draw and dry to obtain network-reinforced calcium alginate fiber.

[0036] The breaking strength of the double network reinforced calcium alginate fiber prepared in this example is 2.24cN / dtex.

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Abstract

The invention provides a double-network reinforced calcium alginate fiber and a preparation method thereof. The double-network reinforced calcium alginate fiber is formed by dissolving sodium alginate, a networking agent, a cross-linking agent and an initiating agent in water and performing copolymerization and solidification, wherein the mass concentration of the sodium alginate is 1-3 percent; the mass ratio of the sodium alginate to the networking agent is (100:10) to (100:30); the mass ratio of the cross-linking agent to the networking agent is (0.01:30) to (0.16:10); the mass ratio of the initiating agent to the networking agent is (0.5:100) to (1.5:100). The double-network reinforced calcium alginate fiber disclosed by the invention has high fiber break strength; during preparation of the double-network reinforced calcium alginate fiber, the cross-linking rate of covalent cross-linking networks of the networking agent can be changed by controlling the reaction condition, so that the balance between the fiber strength and the spinning solution processability can be regulated to meet the requirements on practical processing and application.

Description

technical field [0001] The invention relates to calcium alginate fiber technology, in particular to a double-network reinforced calcium alginate fiber and a preparation method thereof. Background technique [0002] my country has a coastline of 18,000 kilometers and 3 million square kilometers of oceanic land that can be governed. The marine resources contained in it are extremely rich, but the development and utilization rate is low. Alginic acid is a natural marine biomass material with a wide range of sources, low energy consumption in the processing process, and the product can be degraded by microorganisms. Improving the utilization rate of alginic acid can not only improve the utilization rate of marine resources, increase the total value of marine economy in GDP, but also get rid of the dependence on petroleum fossil resources and develop a sustainable economy. [0003] Alginate fiber itself has the characteristics of flame retardancy and biocompatibility, but due to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/18D01F8/10D01D1/02D01D5/06C08F220/56C08F222/38C08F4/30
Inventor 张鸿孙狄克郭萍房艳萍郭静宫玉梅
Owner DALIAN POLYTECHNIC UNIVERSITY
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