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Preparation method of interpenetration network hydrogel

A technology of interpenetrating network and hydrogel, which is applied in the field of preparation of new materials and new interpenetrating network hydrogel, can solve the problem of low gel strength, achieve the effect of uniform structure and simple and easy manufacturing method

Active Publication Date: 2007-10-03
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The step-by-step method is to first synthesize the cross-linked polymer I, then swell it with monomer II containing initiator and cross-linking agent, and then polymerize the monomer II in situ; the macroscopic composition of the hydrogel prepared by step-by-step IPN Has a certain gradient and low gel strength

Method used

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Examples

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Embodiment Construction

[0026] The preparation method of interpenetrating network hydrogel, embodiment 1 is realized through the following steps:

[0027] The first step is to use commercially pure acrylic acid monomers purchased on the market to remove the polymerization inhibitor through vacuum distillation or adsorption purification.

[0028] In the second step, according to acrylic acid: the mass ratio of water is 1: 1, dissolve acrylic acid monomer in water to form a uniform monomer solution, and add potassium hydroxide solution to the monomer solution under stirring conditions, potassium hydroxide and The molar ratio of acrylic acid is 75%, so that the neutralization reaction is carried out completely.

[0029] The third step, according to the mass ratio of acrylic acid: water is 1: 1, dissolve it in water to form a uniform solution; and add potassium hydroxide solution to this solution under stirring conditions, the molar ratio of potassium hydroxide to acrylic acid 75%, so that the neutraliz...

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Abstract

This invention relates to a preparation method of interpenetrating networks hydrogel. It takes acroleic acid monomer or acrylamide monomer, acroleic acid monomer or acrylamide monomer or water-soluble polymer as materials, through prepolymerization to prepare. The gel strength of this product can reach 1.22 MPa. It has extensive application at aspects such as drug release, artificial muscle, biosensor, disengaging gear, heavy metal ion reclaiming and electric conduction gel.

Description

technical field [0001] The invention relates to a preparation method of a novel interpenetrating network hydrogel, which belongs to the technical field of new material technology and new preparation technology. Background technique [0002] Interpenetrating network polymer (IPN) is an interwoven network polymer formed by interpenetrating two or two later crosslinked polymers. Interpenetrating network hydrogel is a special type of hydrogel formed by the IPN containing hydrophilic groups after absorbing water. [0003] Interpenetrating network hydrogel is a lightly cross-linked water-swellable polymer containing strong hydrophilic groups developed in the 1960s. It can swell in solvents but cannot be dissolved. It is a well-developed New functional materials with application prospects. [0004] Interpenetrating network technology is a new technology to realize the physical blending of polymers by chemical methods. Including full interpenetrating network (IPN) and semi-interp...

Claims

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Application Information

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IPC IPC(8): C08F265/10C08F120/56C08F2/00C08F4/30
Inventor 吴季怀唐群委林建明黄妙良
Owner HUAQIAO UNIVERSITY