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用游离基溶液聚合方法合成了乙酸乙烯酯—乙烯基吡咯烷酮共聚物。研究了反应条件对共聚合反应的影响和共聚物组成与转化率的关系。测定了共聚体系的竞聚率;对共聚反应机理进行了初步的探讨。用差示扫描量热仪(DSC)和核磁共振(NMR)C~(13)
Vinyl acetate - vinyl pyrrolidone copolymer was synthesized by free radical polymerization. The effects of reaction conditions on the copolymerization and the relationship between the copolymer composition and the conversion were investigated. The reactivity ratio of the copolymerization system was determined. The mechanism of the copolymerization reaction was discussed preliminarily. Differential scanning calorimetry (DSC) and nuclear magnetic resonance (NMR) C ~ (13)