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Preparation method of organic amphoteric copolymerized macromolecular interpenetrating network 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 methacryloyloxyethyltrimethylammonium chloride, 116g methacrylateoxypropyl trimellitic anhydride, 264.32g abscisic acid and 869.5ml deionized water are added to a 2L sealable reactor Stir and mix evenly, the weight concentration of the aqueous solution is 30%; evacuate to a relative vacuum of -0.03MPa, then pass nitrogen into the reactor to restore the reactor to normal pressure, add 11.18g of dimethacrylic acid with a number average molecular weight of 3000 The aqueous solution prepared by ethylene glycol ester and 42ml deionized water, the weight concentration of this aqueous solution is 21%; Then be warming up to 38 ℃, add the aqueous solution prepared by 1.43g potassium persulfate, 0.43g sodium bisulfite and 32ml deionized water, The weight concentration of the aqueous solution is 5.5%. At a constant temperature of 38°C, the pH value is controlled at 5, and the stirring reaction is continued for 2.3 hours to obtain the first network gel of the organ...

Embodiment 2

[0009]Example 2: 228.2g methacryloyloxyethyltrimethylammonium chloride, 435g methacrylateoxypropyl trimellitic anhydride, 264.3g abscisic acid and 618.3ml deionized water are added into a 2L sealable reactor Stir and mix evenly, the weight concentration of the aqueous solution is 60%; vacuumize to a relative vacuum of -0.07MPa, then pass nitrogen into the reactor to restore the reactor to normal pressure, add 92.7g of polyethylene dimethacrylate with a number average molecular weight of 18000 The aqueous solution prepared by glycol ester and 145ml deionized water, the weight concentration of this aqueous solution is 39%; Then be warming up to 47 ℃, add the aqueous solution prepared by 6.96g potassium persulfate, 6.96g sodium bisulfite and 82ml deionized water, the The weight concentration of the aqueous solution is 14.5%. At a constant temperature of 47°C, the pH value is controlled to be 9, and the stirring reaction is continued for 3.2 hours to obtain the first network gel of...

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PUM

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Abstract

The invention relates to a preparation method of organic amphoteric copolymerized macromolecular interpenetrating network gel. According to the method, methacryloyloxyethyl trimethyl ammonium chloride, trimellitic anhydride oxypropyl methacrylate and abscisic acid are used as comonomers; polyethylene glycol dimethacrylate is used as a cross-linking agent; potassium persulfate-sodium hydrogen sulfite is used as an initiator; a copolymerization reaction is carried out in deionized water to obtain organic amphoteric copolymerized macromolecular first network gel; the first network gel is swelled in an aqueous solution confected by sorbic acid, triethanolamine, ethoxyethyl methacrylate, diethylene glycol dimethacrylate and deionized water; monomers and a cross-linking agent in the aqueous solution generate copolymerization and esterification reactions under the action of potassium persulfate and pyridoxol hydrochloride; the organic amphoteric copolymerized macromolecular interpenetrating network gel is finally 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): C08F285/00C08F220/28C08F8/14C08F290/06C08F220/04C08F222/14
CPCC08F8/14C08F285/00C08F290/062C08F2800/20C08F2810/20C08F220/04C08F222/14C08F220/281
Inventor 朱明江燕妮丁瑶
Owner SICHUAN NORMAL UNIVERSITY
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