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首页> 外文期刊>Journal of Macromolecular Science. Pure and Applied Chemistry >N-Vinylpyrrolidone and Ethoxyethyl Methacrylate Copolymer: Synthesis, Characterization and Reactivity Ratios
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N-Vinylpyrrolidone and Ethoxyethyl Methacrylate Copolymer: Synthesis, Characterization and Reactivity Ratios

机译：N-乙烯基吡咯烷酮和甲基丙烯酸乙氧基乙酯共聚物：合成，表征和反应率

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摘要

Free radical copolymerization of N-vinyl-2-pyrrolidone with 2-ethoxyethyl methacrylates was carried out with 2,2'-azobisisobutyronotrile as an initiator in 1,4-dioxane. The resulting copolymer was characterized by FTIR, H1-NMR and C13-NMR spectroscopic techniques thermal properties of copolymer were determined by DSC and TGA. The reactivity ratios of the monomers were computed by the Fineman-Rose (F-R), Kelen-Tudos (K-T) and extended Kelen-Tudos (EK-T) method at lower conversion, using the data obtained from both FTIR and elemental analysis studies; the results are in good agreement with each other. The average reactivity ratio, Alfrey-Price Q and e values were found to be r1=0.769, r2=0.266 and Q1=0.0859, e1=0.4508, respectively for NVP/EOEMA copolymer. The distribution of monomer sequence along the copolymer chain was calculated using a statistical method based on obtained reactivity ratio. The number average molecular weight and polydispersity were determined by GPC.
机译：N，乙烯基-2-吡咯烷酮与甲基丙烯酸2-乙氧基乙酯的自由基共聚合是在1，4-二恶烷中以2,2'-偶氮二异丁腈为引发剂进行的。所得共聚物通过FTIR，1 H-NMR和C 13 NMR光谱技术表征，通过DSC和TGA测定共聚物的热性能。使用FTIR和元素分析研究获得的数据，通过Fineman-Rose（F-R），Kelen-Tudos（K-T）和扩展Kelen-Tudos（EK-T）方法在较低的转化率下计算单体的反应率。结果彼此非常吻合。发现NVP / EOEMA共聚物的平均反应率，Alfrey-Price Q和e值分别为r1 = 0.769，r2 = 0.266和Q1 = 0.0859，e1 = 0.4508。基于获得的反应率，使用统计方法计算单体序列沿共聚物链的分布。数均分子量和多分散性通过GPC测定。

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