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Study on synthesis and performance of soap-free starch-based cation styrene-acrylate emulsion

Lei Peng

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Abstract

With starch as main chain segment,DMC as functional monomer,styrene(St) and butyl acrylate(BA) as modified monomers,so a soap-free starch-based cation styrene-acrylate emulsion was prepared by seed emulsion copolymerization.The influences of reaction conditions were discussed on emulsion stability and emulsion film performances,the structure of emulsion polymer was characterized by FT-IR method.The result showed that the modified emulsion had optimal combination property when mass ratio of m(DMC)∶m(starch+St+BA),m(starch)∶m(St+BA) and m(St)∶m(BA) were 0.8∶1,1.00∶3 and 1.50∶1 respectively,copolymerization temperature was 80 ℃,mass fraction of initiator was 2% and mass ratio of m(KPS)∶m(NaHSO3) was 2∶1.

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What this paper is about

With starch as main chain segment,DMC as functional monomer,styrene(St) and butyl acrylate(BA) as modified monomers,so a soap-free starch-based cation styrene-acrylate emulsion was prepared by seed emulsion copolymerization.The influences of reaction conditions were discussed on emulsion stability and emulsion film performances,the structure of emulsion polymer was characterized by FT-IR method.The result showed that the modified emulsion had optimal combination property when mass ratio of m(DMC)∶m(starch+St+BA),m(starch)∶m(St+BA) and m(St)∶m(BA) were 0.8∶1,1.00∶3 and 1.50∶1 respectively,copolymerization temperature was 80 ℃,mass fraction of initiator was 2% and mass ratio of m(KPS)∶m(NaHSO3) was 2∶1.

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Available abstract

With starch as main chain segment,DMC as functional monomer,styrene(St) and butyl acrylate(BA) as modified monomers,so a soap-free starch-based cation styrene-acrylate emulsion was prepared by seed emulsion copolymerization.The influences of reaction conditions were discussed on emulsion stability and emulsion film performances,the structure of emulsion polymer was characterized by FT-IR method.The result showed that the modified emulsion had optimal combination property when mass ratio of m(DMC)∶m(starch+St+BA),m(starch)∶m(St+BA) and m(St)∶m(BA) were 0.8∶1,1.00∶3 and 1.50∶1 respectively,copolymerization temperature was 80 ℃,mass fraction of initiator was 2% and mass ratio of m(KPS)∶m(NaHSO3) was 2∶1.

Key concepts: Emulsion, Copolymer, Styrene, Starch, Monomer, Acrylate, Materials science, Butyl acrylate

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