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GRAFT POLYMERIZATION OF OLEFIN ONTO STARCH USING CS_2/H_2O_2 AS INITIATOR

Zhang Yi

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Abstract

Graft polymerization of acrylamide(AM) and styrene(St) onto alkaliline maize starch using CS 2/H 2O 2 as initiator were inverstigated under different conditions including concentration of NaOH, initiator and monomer, the molecular ratio of CS 2 to H 2O 2, polymerization temperature and time. The experimental results indicate that both the optium conversion efficiency of monomer and graft efficiency are above 96% after grafting 0.5~1 h under room temperature(25~35 ℃). The grafting of AM onto starch is easy than St under the same graft conditions. This redox initiator is a radical initiating system, is advantageous for the grafting of water soluable monomer, and has the character of high efficiency and moderate reactionary conditions.

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What this paper is about

Graft polymerization of acrylamide(AM) and styrene(St) onto alkaliline maize starch using CS 2/H 2O 2 as initiator were inverstigated under different conditions including concentration of NaOH, initiator and monomer, the molecular ratio of CS 2 to H 2O 2, polymerization temperature and time. The experimental results indicate that both the optium conversion efficiency of monomer and graft efficiency are above 96% after grafting 0.5~1 h under room temperature(25~35 ℃). The grafting of AM onto starch is easy than St under the same graft conditions. This redox initiator is a radical initiating system, is advantageous for the grafting of water soluable monomer, and has the character of high efficiency and moderate reactionary conditions.

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Available abstract

Graft polymerization of acrylamide(AM) and styrene(St) onto alkaliline maize starch using CS 2/H 2O 2 as initiator were inverstigated under different conditions including concentration of NaOH, initiator and monomer, the molecular ratio of CS 2 to H 2O 2, polymerization temperature and time. The experimental results indicate that both the optium conversion efficiency of monomer and graft efficiency are above 96% after grafting 0.5~1 h under room temperature(25~35 ℃). The grafting of AM onto starch is easy than St under the same graft conditions. This redox initiator is a radical initiating system, is advantageous for the grafting of water soluable monomer, and has the character of high efficiency and moderate reactionary conditions.

Key concepts: Monomer, Grafting, Polymerization, Styrene, Acrylamide, Polymer chemistry, Starch, Radical initiator

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