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通过AN-MMA在本体以及在N,N-二甲基甲酰胺,二氧六圜、苯、环己烷、甲醇及水等溶剂中进行溶液共聚合的研究,得到以下结论: 1.证实了介质对一定共聚体系的均相溶液沉淀共聚合的竞聚率是有影响的。 2.提供了本共聚体系在多种介质中进行溶液共聚合时的竞聚率数据及有关的共聚物组成曲线。同时在水溶液共聚合中,证明柚口贞夫所报导的实验数据与事实不符。 3.根据实验结果,作者初步认为,在均相溶液沉淀共聚合反应中,共聚物组成所以发生变化可能是由于反应地点有效配比与单体投料配比出现差距所导致。而有效配比与两单体极性的差别以及介质与共聚物的极性大小有关。 4.在均相溶液沉淀共聚合中,尤其是采用非极性有机介质时,单体的绝对浓度对共聚物组成也有一定的影响。
The following conclusions were drawn from the study of solution copolymerization of AN-MMA in bulk and in solvents such as N, N-dimethylformamide, dioxane, benzene, cyclohexane, methanol and water. The influence of the medium on the reactivity ratio of a homogeneous solution precipitation copolymerization of a certain copolymerization system is influenced. 2. Provides the copolymerization system in a variety of media solution copolymerization rate data and the copolymer composition curve. At the same time in aqueous solution copolymerization, the experimental data reported by Yukio Sadao was not in accordance with the facts. According to the experimental results, the author preliminarily believes that the change of the copolymer composition in the homogeneous solution precipitation copolymerization reaction may be due to the difference of the effective ratio of the reaction sites and the monomer feed ratio. The effective ratio of the polarity of the two monomers and the difference between the medium and the polarity of the copolymer. 4. In homogeneous solution precipitation copolymerization, especially with non-polar organic medium, the absolute concentration of the monomer copolymer composition also have a certain impact.