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Preparation method of cellulose-based ion exchange fiber

A technology of ion exchange fiber and cellulose fiber, which is applied in the fields of plant fiber, fiber treatment, textile and paper making, etc., can solve the problems such as no research report on ion exchange fiber, and achieve the expansion of application field and scope, large exchange capacity and superiority. The effect of taking performance

Active Publication Date: 2012-07-04
潍坊欣龙生物材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although there are many studies on ion-exchange fibers, their preparation methods are basically grafted and modified with synthetic fibers as the matrix material, and there are no research reports on ion-exchange fibers with cellulose fibers as the matrix material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Attachment of the initiator: take 15 g of degreasing gauze, dry it to constant weight in a vacuum oven, and immerse it in potassium permanganate-sulfuric acid solution, wherein the concentration of potassium permanganate is 0.015mol / L, and the concentration of sulfuric acid is 0.011 mol / L, stirred and reacted for 30 minutes, then rinsed with soft water, separated and removed excess water, and obtained 2 of cellulose fibers.

[0026] (2) Graft polymerization reaction: MnO will be attached 2 The cellulose fiber is put into the grafting polymerization reaction solution, the concentration of acrylamide in this solution is 1.2mol / L, the concentration of reducing agent sulfuric acid is 0.008mol / L, in the constant temperature shaking water bath of 50 ℃, grafting After 4 hours of polymerization reaction, the reaction product was washed with soft water, and the remaining manganese ions were removed with dilute oxalic acid solution, then washed with soft water until neutral,...

Embodiment 2

[0029] (1) Attachment of the initiator: Take 10g of 1.67dtex×38mm viscose short filament, dry it in a vacuum oven to constant weight, and immerse it in potassium permanganate-sulfuric acid solution, wherein the concentration of potassium permanganate is 0.012mol / L, the concentration of sulfuric acid is 0.013mol / L, stirred and reacted for 20 minutes, then rinsed with soft water, separated and removed excess water, and obtained MnO 2 of cellulose fibers.

[0030] (2) Graft polymerization reaction: MnO will be attached 2 The cellulose fiber is put into the graft polymerization reaction solution, the concentration of acrylamide in the solution is 1.5mol / L, the concentration of the reducing agent sulfuric acid is 0.007mol / L, in a constant temperature oscillating water bath at 50°C, grafting After 3 hours of polymerization reaction, the reaction product was washed with soft water, and the remaining manganese ions were removed with dilute oxalic acid solution, then washed with soft...

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PUM

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Abstract

The invention discloses a preparation method of cellulose-based ion exchange fiber, which comprises the following steps: (1) dipping dried cellulose fiber dried with constant weight into acidic potassium permanganate solution, stirring the mixture, washing the cellulose fiber with water, and removing moisture to obtain cellulose fiber carried with MnO2; (2) putting the cellulose fiber carried with the MnO2 in acrylamide solution, adding a reducing agent, carrying out graft copolymerization in thermostatic shaking water bath for 3-5h, washing the obtained reaction product with water, removing the residual manganese ions after copolymerization, washing the reaction product with water again, and drying the reaction product until being in a constant weight state to obtain a graft polymer; and(3) adding the graft polymer to mixed solution of NaOH and NaClO, carrying out degradation reaction in the thermostatic shaking water bath for 0.5-2h, performing acid-washing on the graft polymer to remove the residual chlorine after reaction, washing the obtained graft polymer with water and drying the washed graft polymer until being in a constant weight state to obtain the cellulose-based ion exchange fiber.

Description

technical field [0001] The invention relates to the technical field of ion exchange fibers, in particular to a preparation method of cellulose-based ion exchange fibers. Background technique [0002] Ion exchange fiber is a fibrous ion exchange adsorption material, which is composed of many monofilaments with uniform thickness, and the diameter ranges from 20 to 300um. The structure of the ion exchange fiber is composed of two parts: the matrix fiber and the exchange group connected to it. Among them, the matrix fibers include polyvinyl alcohol, polypropylene nitrile, polyvinyl chloride-acrylonitrile copolymer, polyphenolic, polyamide, polyolefin, etc., and the exchange groups include strong acid, weak acid, strong base, weak base, amphoteric groups, etc. . [0003] The preparation of ion exchange fibers began in the 1940s. Anion and cation exchange fibers containing phosphoric acid groups and amine groups were first prepared. Since the 1970s, the former Soviet Union, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/50D06M14/04D06M11/38D06M11/30D06M101/06
Inventor 逄奉建张志鸿曹其贵王乐军刘建华马峰刚姜明亮
Owner 潍坊欣龙生物材料有限公司
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