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Superabsorbent fibers prepared from polyvinyl alcohol fibers and preparing method and application thereof

A technology of polyvinyl alcohol fibers and superabsorbent fibers, which is applied in fiber types, fiber treatment, textiles and papermaking, etc., can solve problems such as limiting industrial applications, and achieve excellent water absorption performance and simple production equipment.

Inactive Publication Date: 2015-12-02
WUXI CHANGAN SHUGUANG GLOVE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water absorption of the superabsorbent fiber is only more than 150 times of its own weight in deionized water or more than 35 times of normal saline, which limits its industrial application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 11 grams of water-soluble polyvinyl alcohol fiber (80 ℃ of water melting temperature), solvent: butyl acetate, the weight percent concentration of maleic anhydride in butyl acetate is 8%, this solution consumption 85 grams, 70 ℃ of temperature of reaction, time 3 hours.

[0031] Methanol solution of sodium hydroxide, alkalization treatment; then wash with methanol and dry at 80°C to obtain polyvinyl alcohol superabsorbent fibers.

[0032] The superabsorbent fiber has an absorption rate of 480 times for deionized water and 60 times for normal saline.

Embodiment 2

[0034] 15 grams of water-soluble polyvinyl alcohol fiber (water-soluble temperature is room temperature), solvent: dioxane, the concentration by weight of maleic anhydride in dioxane is 20%, and the consumption of this solution is 90 grams. The reaction temperature was 95°C and the time was 2 hours.

[0035] Potassium hydroxide in ethanol, alkalized. Afterwards, it was washed with ethanol and dried at a temperature of 90° C. to obtain polyvinyl alcohol superabsorbent fibers.

[0036] The deionized water absorption rate of the fiber is 450 times, and the absorption rate of normal saline is 75 times.

Embodiment 3

[0038] Water-soluble polyvinyl alcohol fiber (water melting temperature is 70 ℃) 13 grams, solvent: butyl acetate, the concentration by weight of maleic anhydride in butyl acetate is 5%, and this solution consumption is 95 grams. The reaction temperature was 85°C and the time was 5 hours.

[0039] Ethanol solution of sodium hydroxide, alkaline treatment. Afterwards, it was washed with ethanol and dried at a temperature of 70° C. to obtain polyvinyl alcohol superabsorbent fibers.

[0040] The deionized water absorption rate of the fiber is 400 times, and the absorption rate of normal saline is 55 times.

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PUM

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Abstract

The invention relates to superabsorbent fibers prepared from polyvinyl alcohol fibers and a preparing method and application thereof. The preparing method of the superabsorbent fibers includes the steps that 11-15 g of water-soluble polyvinyl alcohol fibers are put into 85-95 g of organic solvent containing maleic anhydride and esterified by the maleic anhydride for 1-5 h at the temperature of 70 DEG C-95 DEG C; the esterified fibers are treated with an alkali solution, washed and dried. By selecting the appropriate amount of polyvinyl alcohol fibers, the appropriate amount of the maleic anhydride organic solution and appropriate reaction temperature, the polyvinyl alcohol superabsorbent fibers obtained through preparation have superhigh water absorption and can absorb deionized water with the weight 400 times larger than the own weight of superabsorbent fibers or normal saline with the weight 55 times larger than the own weight of superabsorbent fibers.

Description

technical field [0001] The invention belongs to the field of fiber material preparation, and in particular relates to a superabsorbent fiber prepared from polyvinyl alcohol fiber, its preparation method and application. Background technique [0002] Superabsorbent fiber is a fiber with special functions developed following superabsorbent resin. The fiber can absorb 30-50 times of its own weight of physiological saline or more than 150 times of deionized water like the superabsorbent resin. This moisture can be kept inside the fiber and not squeezed out. Superabsorbent fiber not only has the functions of water absorption and water retention of superabsorbent resin, but also has a large surface area due to its small fiber diameter, usually around 30 μm, and has a faster water absorption speed than resin; the fiber has a large aspect ratio, which can be compared with Other fibers are entangled together and are not easy to scatter; superabsorbent fibers are easy to use and can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/192D06M101/24
Inventor 缪建良
Owner WUXI CHANGAN SHUGUANG GLOVE FACTORY
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