Method for preparing hydrophilic or hydrophobic fiber

A hydrophobic fiber, hydrophilic technology, used in fiber processing, textiles and papermaking, etc., can solve the problem of low monomer utilization rate

Inactive Publication Date: 2007-05-30
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide a method for controlling the graft polymerization of monomers to the fiber surface and improving the utilization rate of monomers, so as to solve the problem that the utilization rate of monomers is not high, and to control the hydrophilicity or Hydrophobic properties

Method used

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  • Method for preparing hydrophilic or hydrophobic fiber
  • Method for preparing hydrophilic or hydrophobic fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Put the ramie fiber into the mixed solution of N-methylpyrrolidone and 2-bromoisobutyryl bromide, add 4-dimethylaminopyridine, react at 20°C for 6 hours, take out the ramie fiber and wash it with absolute ethanol and distilled water times, then dry. Put the dried ramie fiber into the acetone solution of methyl methacrylate, add pentamethyldiethylenetriamine and cuprous bromide, react at 30°C for 24 hours, take out the fiber and wash it with acetone and distilled water several times, The hydrophobic fiber is obtained by drying.

Embodiment 2

[0012] Put the ramie fiber into the mixed solution of N-methylpyrrolidone and 2-bromoisobutyryl bromide, add 4-dimethylaminopyridine, react at 40°C for 6 hours, take out the ramie fiber and wash it with absolute ethanol and distilled water times, then dry. Put the dried ramie fiber into the acetone solution of styrene, add 1,10-phenanthroline and cuprous bromide, react at 40°C for 24 hours, take out the fiber and wash it with acetone and distilled water several times, and dry it. to obtain hydrophobic fibers.

Embodiment 3

[0014] Put the ramie fibers into the mixed solution of N-methylpyrrolidone and 2-bromoisobutyryl bromide, add 4-dimethylaminopyridine, react at 60°C for 24 hours, take out the ramie fibers and wash them with absolute ethanol and distilled water times, then dry. Put the dried ramie fiber into the acetone solution of dimethylaminoethyl methacrylate, add bipyridine and cuprous bromide, react at 50°C for 6 hours, take out the fiber, wash it with acetone and distilled water for several times, and dry it That is, hydrophilic fibers are obtained.

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Abstract

The invention relates to a manufacturing method for fiber with hydrophilicity or hydrophobicity. In the invention fiber macromolecular initiator is manufactured by the reaction between fiber stock and 2-bromoisobutyryl bromide with the 4-dimethylaminopyridine catalyst, then methyl methacrylate or dimethylamino ethyl methacrylate is initiated by fiber macromolecular initiator. The fiber in the invention is provided with hydrophilicity or hydrophobicity. By the method monomer can be controlled to polymerize on the fiber surface effectively so as to improve the usage of monomer and by the inputting quantity of monomer the hydrophilic or hydrophobic performance of manufactured fiber can be controlled.

Description

a technical field [0001] The invention relates to a method for preparing hydrophilic or hydrophobic fibers, which is especially suitable for effectively controlling the grafting of monomers to the surface of fibers, improving the utilization rate of monomers, and controlling the hydrophilicity of fibers through the addition of monomers sex or hydrophobicity. Two background technology [0002] At present, the method of grafting and modifying fibers is mainly free radical polymerization. The main disadvantage of this method is that the reaction is uncontrollable. Due to the separation of the initiator and the fiber, the graft polymerization of the monomer to the surface of the fiber cannot be controlled, resulting in a reaction process. The utilization rate of the monomer in the medium is very low, which directly leads to the high cost of modification. This method uses atom transfer radical polymerization to graft and modify fibers. The main feature of atom transfer radical p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M14/04
Inventor 刘昭铁孙长安
Owner SHAANXI NORMAL UNIV
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