Preparation method of organic amphoteric copolymer interpenetrating network hydro-gel

An interpenetrating network and polymer technology, which is applied in the field of preparation of organic amphoteric copolymer polymer interpenetrating network gel, can solve the problems of low stability of interpenetrating network gel, carcinogenicity of monomer acrylamide, gel toxicity effect, etc. , to achieve good environmental and economic benefits, a simple preparation method, and the effect of improving stability

Inactive Publication Date: 2017-05-31
SICHUAN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the main problem in the preparation method of organic amphoteric copolymerized polymer interpenetrating network gel is that the monomer acrylamide is a highly toxic drug that is "carcinogenic, distorting, and mutagenic", and the cross-linking agent N, N methylenebisacrylamide The toxicity is high, and there is an adverse toxic effect on the gel; the stability of the interpenetrating network gel formed by a single cross-linking agent is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Example 1: 124.5g of methacryloyloxyethyltrimethylammonium chloride, 57.7g of methacrylic acid-β-hydroxypropyl ester, 58g of fumaric acid and 560.5ml of deionized water are added into a sealable container with a volume of 2L Stir and mix evenly in the reactor, the weight concentration of the aqueous solution is 30%; evacuate to a relative vacuum of -0.03MPa, then feed nitrogen to restore the reactor to normal pressure, and add 7.2g of dimethyl An aqueous solution prepared from polyethylene glycol acrylate and 27.1ml of deionized water, the weight concentration of the aqueous solution is 21%; then the temperature is raised to 38°C, and 0.92g of potassium persulfate, 0.28g of sodium bisulfite and 20.6ml of deionized water are added The prepared aqueous solution, the weight concentration of which is 5.5%, is kept at a constant temperature of 38°C, the pH value is controlled to 4.5, and the stirring reaction is continued for 2.3 hours to obtain the first network gel of the o...

Embodiment 2

[0009]Example 2: 228.2g of methacryloyloxyethyltrimethylammonium chloride, 216.2g of methacrylic acid-β-hydroxypropyl ester, 116.1g of fumaric acid and 373.7ml of deionized water are added to a volume of 1L and can be sealed Stir and mix evenly in the reactor, the weight concentration of the aqueous solution is 60%; evacuate to a relative vacuum of -0.07MPa, then feed nitrogen to restore the reactor to normal pressure, add 56.1g of dimethyl An aqueous solution prepared from polyethylene glycol acrylate and 87.7ml of deionized water, the weight concentration of the aqueous solution is 39%; then the temperature is raised to 48°C, and 4.2g of potassium persulfate, 4.2g of sodium bisulfite and 49.6ml of deionized water are added The prepared aqueous solution has a weight concentration of 14.5%, is kept at a constant temperature of 48°C, and the pH value is controlled to be 9.6, and the stirring reaction is continued for 3.2 hours to obtain the first network gel of the organic ampho...

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Abstract

The invention relates to a preparation method of organic amphoteric copolymer interpenetrating network hydro-gel. The method comprises the steps of adopting methylacryloyloxyethyl trimethyl ammonium chloride, beta-hydroxypropyl methacrylate and fumaric acid as copolymerizable monomers, adopting dimethyl acrylate polyethylene glycol ester as a cross-linking agent, adopting potassium peroxodisulfate-sodium hydrogen sulfite as an initiator, and carrying out copolymerization reaction in deionized water to obtain organic amphoteric copolymer first network hydro-gel; swelling the first network hydro-gel in a water solution prepared from sorbic acid, xylitol, N,N-dimethylaminoethyl acrylate, dimethacrylate-1,3-butanediol ester and deionized water, carrying out copolymerization and esterification reaction on a monomer and a cross-linking agent in the water solution through the action of potassium sulphate and pyridoxine hydrochloride, and finally obtaining the organic amphoteric copolymer interpenetrating network hydro-gel.

Description

technical field [0001] The invention relates to a preparation method of an organic amphoteric copolymer interpenetrating network gel. Background technique [0002] Gel is a special dispersion system. Polymer molecules or colloidal particles are connected to form a three-dimensional space network structure, which can absorb a large amount of water swelling and is insoluble in water. It can maintain a certain shape in water and has both solid and liquid properties. nature. Macroscopically, polymer gel has a certain shape, which will be deformed when a certain external force is applied, and will return to its original shape after removing the external force, with solid viscoelasticity; microscopically, polymer gel has a three-dimensional network structure and is insoluble in water, three-dimensional Network molecules can be stretched in water and have liquid properties. The gel with softness, high water content and rubber viscoelasticity has been widely used in many fields su...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08F285/00C08F220/34C08F290/06C08F220/28C08F222/02C08F220/04C08F8/14
CPCC08F285/00C08F8/14C08F290/062C08F2800/20C08F2810/20C08F220/34C08F220/04
Inventor朱明何珊江燕妮
OwnerSICHUAN NORMAL UNIVERSITY