Preparation method of organic amphoteric copolymerized macromolecular interpenetrating network gel

An interpenetrating network and polymer technology, 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: 125g of methacryloyloxyethyltrimethylammonium chloride, 63g of ethoxyethyl methacrylate, 65g of itaconic acid and 590ml of deionized water are added to a sealable reactor with a volume of 1L Stir and mix evenly in the medium, the weight concentration of the aqueous solution is 30%, evacuate to a relative vacuum degree of -0.035MPa, then pass nitrogen gas to restore the reactor to normal pressure, add 8g of polyethylene dimethacrylate with a number average molecular weight of 3000 Alcohol ester and 29ml deionized water prepared aqueous solution, the weight concentration of the aqueous solution is 21%; then warm up to 38 ℃, add 0.97g potassium persulfate, 0.29g sodium bisulfite and 22ml deionized water prepared aqueous solution, the aqueous solution The weight concentration of the organic amphoteric copolymer is 5.5%; 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 net...

Embodiment 2

[0009]Example 2: 228g methacryloyloxyethyltrimethylammonium chloride, 237g ethoxyethyl methacrylate, 130g itaconic acid and 397ml of deionized water were added to a 1L sealable reactor and stirred Mix evenly, the weight concentration of the aqueous solution is 60%, evacuate to a relative vacuum degree of -0.075MPa, then feed nitrogen to restore the reactor to normal pressure, add 60g of polyethylene glycol dimethacrylate with a number average molecular weight of 18000 and 93ml 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 4.47g potassium persulfate, 4.47g sodium bisulfite and 53ml 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 at 8.4, and the stirring reaction is continued for 3.2 hours to obtain the first network gel of the organic amphoteric copolymer polymer; A netwo...

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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, ethoxyethyl methacrylate and itaconic 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 crotonic acid, D-arabinose, vinyl pyrrolidone, neopentyl 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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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08J3/24C08J3/075C08F283/06C08F220/34C08F226/10C08F220/04C08F222/14C08L39/06C08L51/08
CPCC08F226/10C08F283/065C08J3/075C08J3/246C08J2339/06C08J2451/08C08L39/06C08L2205/04C08F220/34C08L51/08C08F220/04C08F222/102
Inventor朱明范耀月江燕妮
OwnerSICHUAN NORMAL UNIVERSITY