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2006•Journal of China University of Mining and TechnologyRequires access

Synthesis of Optically Active Polymers in Microemulsion Process

Guoxiang Wang, Pengsheng Liu

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Abstract

Chiral N-maleoyl-L-alanine(AMI) and styrene(St) were copolymerized in the oil-water microemulsion by using potassium persulfate(KPS) as initiator,sodium dodecyl sulfate(SDS) as anionic emulsifier,and pentanol as consurfactant.The resulting polymers are optically active.The monomer reactivity ratios(r_1,r_2),Alfrey-Price Q,and e values are calculated, which are r_1=0.05,r_2=0.10,Q_1=1.59,and e_1=1.50,respectively.The effects of initiator concentration,molar fraction of monomer in feed and reaction temperature on the polymerization rate(R_p) have been investigated.The overall energy of activation(E_a) is 82.86 kJ/mol.

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What this paper is about

Chiral N-maleoyl-L-alanine(AMI) and styrene(St) were copolymerized in the oil-water microemulsion by using potassium persulfate(KPS) as initiator,sodium dodecyl sulfate(SDS) as anionic emulsifier,and pentanol as consurfactant.The resulting polymers are optically active.The monomer reactivity ratios(r_1,r_2),Alfrey-Price Q,and e values are calculated, which are r_1=0.05,r_2=0.10,Q_1=1.59,and e_1=1.50,respectively.The effects of initiator concentration,molar fraction of monomer in feed and reaction temperature on the polymerization rate(R_p) have been investigated.The overall energy of activation(E_a) is 82.86 kJ/mol.

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Available abstract

Chiral N-maleoyl-L-alanine(AMI) and styrene(St) were copolymerized in the oil-water microemulsion by using potassium persulfate(KPS) as initiator,sodium dodecyl sulfate(SDS) as anionic emulsifier,and pentanol as consurfactant.The resulting polymers are optically active.The monomer reactivity ratios(r_1,r_2),Alfrey-Price Q,and e values are calculated, which are r_1=0.05,r_2=0.10,Q_1=1.59,and e_1=1.50,respectively.The effects of initiator concentration,molar fraction of monomer in feed and reaction temperature on the polymerization rate(R_p) have been investigated.The overall energy of activation(E_a) is 82.86 kJ/mol.

Key concepts: Potassium persulfate, Monomer, Microemulsion, Chemistry, Polymerization, Persulfate, Styrene, Emulsion polymerization

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