摘要
用热分解型引发剂在较低的乳化剂浓度下进行了醋酸乙烯(VAc)的乳液聚合,并将所得聚合物(PVAc)干法醇解。讨论了聚合反应中反应温度、引发剂用量、反应时间对转化率、粘度、最终产物分子质量(M_η)的影响,同时讨论了干法醇解反应中聚合物的甲醇浓度、碱摩尔比、温度与最终醇解率的关系。
Emulsion of vinyl acetate was conducted with latex of low concentration and initiator of pyrolytic reaction, the product was processed by dry alcoholysis reaction. Influences of initiator s dosage ., reaction temperature and time on conversion, viscosity, molecular weight was discussed. Concentration of the polymer, alkaline mol ratio, temperature on the final alcoholysis rate were also discussed.
出处
《合成技术及应用》
2003年第3期8-10,共3页
Synthetic Technology & Application
关键词
聚乙烯醇
高分子质量
乳液聚合
醇解
polyvinyl alcohol
high relative molecular weight
emulsion
alcoholysis
