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Preparation method for organic amphoteric copolymer 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: 2017-05-24
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
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Embodiment 1

[0008] Example 1: 125g methacryloyloxyethyltrimethylammonium chloride, 63g ethoxyethyl methacrylate, 56g sorbic acid and 569ml of deionized water are added into a sealable reactor with a volume of 2L Stir and mix evenly, the weight concentration of the aqueous solution is 30%, evacuate to a relative vacuum degree of -0.03MPa, then feed nitrogen to restore the reactor to normal pressure, add 7g of polyethylene glycol dimethacrylate with a number average molecular weight of 3000 and 28ml of deionized water, the weight concentration of the aqueous solution is 21%; then the temperature is raised to 36°C, and the aqueous solution prepared by adding 0.94g of potassium persulfate, 0.28g of sodium bisulfite and 21ml of deionized water, the weight of the aqueous solution The concentration is 5.5%; at a constant temperature of 36°C, the pH value is controlled to 4.4, and the stirring reaction is continued for 2.3 hours to obtain the first network gel of the organic amphoteric copolymer p...

Embodiment 2

[0009]Embodiment 2: 228g methacryloyloxyethyltrimethylammonium chloride, 237g ethoxyethyl methacrylate, 112g sorbic acid and 385ml of deionized water are added into a 1L sealable reactor and stirred Mix evenly, the weight concentration of this aqueous solution is 60%, vacuumize to relative vacuum degree-0.07MPa, then feed nitrogen to restore the reactor to normal pressure, add 58g of polyethylene glycol dimethacrylate with a number average molecular weight of 18000 The aqueous solution prepared with 90ml deionized water, the weight concentration of the aqueous solution is 39%; then the temperature is raised to 48°C, and the aqueous solution prepared with 4.43g potassium persulfate, 4.43g sodium bisulfite and 51ml deionized water is added, the weight of the aqueous solution The concentration 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 3.3 hours to obtain the first network gel of the organic amphote...

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Abstract

The invention relates to a preparation method for an organic amphoteric copolymer interpenetrating network gel. According to the method, methacryloyloxyethyl trimethyl ammonium chloride, ethoxyethyl methacrylate and sorbic acid are used as comonomers, poly(ethylene glycol) dimethacrylate as a cross-linking agent and potassium persulfate-sodium hydrogen sulfite as an initiator to carry out copolymerization reaction in deionized water, so that an organic amphoteric copolymer first network gel is obtained; the first network gel is swelled in an aqueous solution prepared from 2-methyl-4-pentenoic acid, cyclohexanehexol, vinyl pyrrolidone, dibromoneopentyl glycol dimethacrylate and deionized water, the monomers and cross-linking agent in the aqueous solution undergo the action of potassium sulfate and pyridoxine hydrochloride to carry out copolymerization and esterification reaction, and 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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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/24C08J3/075C08F283/06C08F220/34C08F220/28C08F236/14C08F220/04C08F226/10C08F222/18C08L51/08C08L33/02
CPCC08F220/04C08F283/065C08J3/075C08J3/246C08J2333/02C08J2451/08C08L33/02C08L2205/04C08L51/08C08F220/34C08F226/10C08F222/102
Inventor 朱明周小澜江燕妮
Owner SICHUAN NORMAL UNIVERSITY
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