摘要
研究单体配比、引发剂浓度、聚合温度等主要因素对偏氯乙烯-氯乙烯共聚物组成和分子量、悬浮共聚速率的影响.在30、45、70℃下测定了两单体的竞聚率,讨论了共聚物组成的偏移情况,提出了速率模型,在35～65℃范围内求出了模型参数,建立了分子量模型,提供了粘均分子量与二氯乙烷杂质浓度、引发剂浓度、温度间的定量关系.
In this paper, the effects of the main factors such as monomer ratio, concentration of initiator and polymerization temperature on the composition and molecular weight of vinylidene chloride - vinyl chloride copolymer, and the rate of copolymerization were studied in the suspension process. The reactivity ratios of vinylidene chloride and vinyl chloride weremeasured at the temperature of 30, 45 and 70℃. The drift of copolymer composition was discussed. A rate model was proposed and the model parameters were evaluated at the temperature range of 35-65℃. A molecular weight model was also established to give the quantitative relation between viscosity - average molecular weight and concentrations of dichloroethane and initiator, and polymerization temperature.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1993年第1期73-80,共8页
CIESC Journal
基金
国家自然科学基金资助项目
关键词
氯乙烯
悬浮共聚合
动力学模型
vinylidene chloride , vinyl chloride, suspension copolymerization, kinetic model, reactivity ratio
