Preparation method of organic amphoteric copolymer interpenetrating network 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, 52g of hydroxyethyl methacrylate, 177.2g of chlorogenic acid and 825.3ml of deionized water were added to a sealable reaction with a volume of 2L Stir and mix evenly in the reactor, the weight concentration of the aqueous solution is 30%, vacuumize to a relative vacuum degree of -0.03MPa, then pass nitrogen into the reactor to restore the reactor to normal pressure, add 10.6g of dimethacrylic acid with a number average molecular weight of 3000 An aqueous solution prepared from ethylene glycol esters and 39.9ml of deionized water, the weight concentration of the aqueous solution is 21%, and then heated to 37 ° C, adding 1.36g of potassium persulfate, 0.41g of sodium bisulfite and 30.4ml of deionized water prepared Aqueous solution, the weight concentration of the aqueous solution is 5.5%; at a constant temperature of 37 ° C, the pH value is controlled to 4.4, and the stirring reaction is continued for 2....

Embodiment 2

[0009]Example 2: 228.2g of methacryloyloxyethyltrimethylammonium chloride, 166.7g of hydroxyethyl methacrylate, 354.3g of chlorogenic acid and 499.5ml of deionized water were added to a 2L sealable Stir and mix evenly in the reactor, the weight concentration of the aqueous solution is 60%, evacuate to a relative vacuum degree of -0.07MPa, then feed nitrogen to restore the reactor to normal pressure, add 74.9g of dimethacrylic acid with a number average molecular weight of 18000 An aqueous solution prepared from polyethylene glycol ester and 117.2ml of deionized water, the weight concentration of the aqueous solution is 39%; then the temperature is raised to 48°C, and 5.62g of potassium persulfate, 5.62g of sodium bisulfite and 66.3ml of deionized water are added to prepare The aqueous solution, the weight concentration of the aqueous solution is 14.5%; at a constant temperature of 48 ° C, the pH value is controlled to be 8.9, and the stirring reaction is continued for 3.2 hours...

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Abstract

The invention relates to a preparation method of organic amphoteric copolymer interpenetrating network gel. The method is characterized in that methacryloyloxyethyl trimethyl ammonium chloride, hydroxyethyl methacrylate and chlorogenic acid are used as comonomers; poly(ethylene glycol) dimethacrylate is used as a cross-linking agent; potassium peroxodisulfate-sodium hydrogen sulfite is used as an initiating agent; a copolymerization reaction is taken in deionized water to obtain organic amphoteric copolymer first network gel; the first network gel swells in a water solution prepared from caffeic acid, quinic acid, methacrylic acid-2-ethylhexyl acrylate, tetramethyl acrylic acid pentaerythritol ester and deionized water; the monomers and the cross-linking agent in the water solution take copolymerization and esterification reactions under the effects of potassium peroxodisulfate and pyridoxine hydrochloride; finally, the organic amphoteric copolymer interpenetrating network gel is obtained.

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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IPC IPC(8): C08F285/00C08F220/04C08F220/18C08F222/14C08F283/06C08F220/34C08F220/28
CPCC08F283/065C08F285/00C08F220/283C08F220/1806C08F220/34C08F220/281C08F222/104
Inventor朱明江燕妮宋佳柠
OwnerSICHUAN NORMAL UNIVERSITY