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《Petrochemical Technology》 2004-05
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Determination of Reactivity Ratio of N-Maleoyl-L -Alanine and Styrene in Microemulsion Copolymarization

Wang Guoxiang, Liu Pengsheng (College of Chemistry,Xiangtan University,Xiangtan Hunan 411105,China; College of Chemistry of Hunan Institute of Technology, Yueyang Hunan 414000,China)  
N-maleoyl-L -alanine (AMI) and styrene(St) copolymerized in oil-water microemulsion at 60 ℃ ,using potassium persulfate(KPS) as initiator,sodium dodecyl sulfate(SDS) as anionic emulsifier and pentanol as consurf actant. The obtained polymer was optically active. Mayo-Lewis equation, Kelen-Tudos and Yezrielev -Brokhina-Roskin methods were used for calculating monomer reactivity ratios. From relevant feed monomer composition and copolymer composition,monomer reactivity mole ratios r1 = 0.050(AMI) and r2 - 0.113(St) were obtained, from which Alfrey-Price Q,e values were determined as follows: r1 =0.050 and r2 = 0.113,Q1 = 1.43 and e1 = 1.48,respectively,inferring an alternate copolymerization reaction.
【Fund】: 湖南省自然科学基金资助项目(01JJY3011)。
【CateGory Index】: O631
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