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Study on bentonite composite polysodium acrylate-acrylamide high water-absorbing copolymer resin by inverse suspension polymerization

Wen He

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Abstract

A novel high waterabsorbing copolymer resin based on sodium acrylate, acrylamide,2hydroxyethyl acrylate and N,Nmethylenebisacrylamide was prepared by inverse suspension copolymerization and potassium persulfate /sodium acid sulfite as redox initiator,Span?80?/Tween 80 as composite dispersing agent.The effect of the amount of bentonite on waterabsorption capacity ,water absorption rate and water retention of the copolymer was studied. The water retention and kinetic process of dewatering of the bentonite composite resin were studied by TGA and DSC.

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A novel high waterabsorbing copolymer resin based on sodium acrylate, acrylamide,2hydroxyethyl acrylate and N,Nmethylenebisacrylamide was prepared by inverse suspension copolymerization and potassium persulfate /sodium acid sulfite as redox initiator,Span?80?/Tween 80 as composite dispersing agent.The effect of the amount of bentonite on waterabsorption capacity ,water absorption rate and water retention of the copolymer was studied. The water retention and kinetic process of dewatering of the bentonite composite resin were studied by TGA and DSC.

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Available abstract

A novel high waterabsorbing copolymer resin based on sodium acrylate, acrylamide,2hydroxyethyl acrylate and N,Nmethylenebisacrylamide was prepared by inverse suspension copolymerization and potassium persulfate /sodium acid sulfite as redox initiator,Span?80?/Tween 80 as composite dispersing agent.The effect of the amount of bentonite on waterabsorption capacity ,water absorption rate and water retention of the copolymer was studied. The water retention and kinetic process of dewatering of the bentonite composite resin were studied by TGA and DSC.

Key concepts: Copolymer, Materials science, Bentonite, Potassium persulfate, Acrylamide, Acrylate, Absorption of water, Suspension polymerization

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