乙烯基单体在二甲基亚砜中与溴化聚丙烯腈的光接枝共聚动力学

Polymer Photochemistry Pub Date : 1985-01-01 DOI:10.1016/0144-2880(85)90009-0

Hajime Miyama, Nobuyuki Fujii, Koetsu Ikeda, Atsushi Kuwano

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引用次数: 1

摘要

在二甲基亚砜中进行了甲氧基聚甲基丙烯酸乙二醇酯(SM)和2-(二甲氨基)甲基丙烯酸乙酯(DAEM)与含溴原子聚丙烯腈(PANBr)的光接枝共聚反应，并采用薄层色谱法测定了SM和DAEM的浓度随时间的变化。分光光度法测定了PANBr光解过程中溴原子浓度的变化，确定了光解反应的总量子产率。通过将得到的总量子产率、单体反应比、聚合速率常数、φ因子等动力学参数代入光聚合方程，对光接枝共聚过程进行模拟。实验结果与计算结果吻合较好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Kinetics of photograft copolymerization of vinyl monomers to brominated poly(acrylonitrile) in dimethyl sulphoxide

Photograft copolymerization of methoxypolyethyleneglycol methacrylate (SM) and 2-(dimethylamino)ethyl methacrylate (DAEM) to poly(acrylonitrile) containing bromine atoms (PANBr) in dimethyl sulphoxide was carried out and the changes of concentration of SM and DAEM with time were measured by thin-layer chromatography. Also, the change of concentration of bromine atoms in PANBr during the photolysis of PANBr was measured spectrophotometrically to determine the overall quantum yield of the photolysis reaction.

Simulation of the photograft copolymerization was carried out by substituting the overall quantum yield and other kinetic parameters such as monomer reactivity ratios, polymerization rate constants and φ factor, which were obtained separately, into equations for the photopolymerization. Agreement between data obtained from experiment and from calculation was very good.

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