Preparation method of organic amphoteric copolymer interpenetrating network hydro-gel

A technology of interpenetrating network and polymer, which is applied in the field of preparation of organic amphoteric copolymerized polymer interpenetrating network gel, which can solve the problems of low stability of interpenetrating network gel, carcinogenesis of monomer acrylamide, and the influence of gel toxicity , achieving good environmental and economic benefits, simple preparation method, and improved 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, 79.3g of 2-ethylhexyl methacrylate, 65g of itaconic acid and 627.3ml of deionized water were added to a 1.5L Stir and mix evenly in a closed reactor, the weight concentration of the aqueous solution is 30%; vacuumize to a relative vacuum degree of -0.03MPa, then feed nitrogen into the reactor to restore the reactor to normal pressure, add 8.1g of di An aqueous solution prepared from polyethylene glycol methacrylate and 30.3ml of deionized water, the weight concentration of the aqueous solution is 21%; then the temperature is raised to 37°C, and 1.03g of potassium persulfate, 0.31g of sodium bisulfite and 23.1ml of deionized water are added An aqueous solution prepared with ionized water, the weight concentration of the aqueous solution is 5.5%, at a constant temperature of 37 ° 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 t...

Embodiment 2

[0009]Example 2: 228.3g of methacryloyloxyethyltrimethylammonium chloride, 297.5g of 2-ethylhexyl methacrylate, 130.1g of itaconic acid and 437.2ml of deionized water were added to a volume of 1.5L Stir and mix evenly in a closed reactor, the weight concentration of the aqueous solution is 60%; vacuumize to a relative vacuum of -0.07MPa, then feed nitrogen to restore the reactor to normal pressure, add 65.6g of di An aqueous solution prepared from polyethylene glycol methacrylate and 102.6ml of deionized water, the weight concentration of the aqueous solution is 39%; then the temperature is raised to 47°C, and 4.92g of potassium persulfate, 4.92g of sodium bisulfite and 58ml of deionized water are added An aqueous solution prepared with water, the weight concentration of the aqueous solution is 14.5%, at a constant temperature of 47 ° C, the pH value is controlled to 9.4, and the stirring reaction is continued for 3.2 hours to obtain the first network gel of the organic amphote...

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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, 2-ethylhexyl methacrylate and itaconic 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 jasmonic acid, D-arabinose, beta-hydroxypropyl methacrylate, dimethyl acrylic acid neopentyl glycol 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): C08F285/00C08F220/64C08F220/28C08F222/14C08F8/14C08F290/06C08F220/34C08F220/18C08F222/02
CPCC08F8/14C08F285/00C08F290/062C08F2800/20C08F2810/20C08F220/64C08F220/1806C08F220/34
Inventor朱明何山江燕妮
OwnerSICHUAN NORMAL UNIVERSITY