摘要
改变加料速率作了４ 组ＶＡｃ－ＢＡ 半连续乳液共聚的实验，测定了动力学并建立了简化的动力学模型，用Ｍｏｎｔｅ Ｃａｒｌｏ 方法模拟了反应过程中共聚物链段组成的分布，模拟了同种单体的最长链段长度，它可以作为微观相分离程度、微区尺寸大小的判据，模拟结果和文献报道进行了对照。对玻璃化温度这一聚合物溶混性的判断标准进行了补充和说明。
An experimental study of seeded semi continuous emulsion copolymerization of vinyl acetate(VAc) and butyl acrylate (BA) was carried out in an isothermal stirred vessel with continuous addition of neat monomer but different volumetric feed rate of monomer. A simpled mathematical model to simulate the experimental results was also developed. By using Monte Carlo method to simulate the distribution of copolymer segments during the process of VAc BA copolymerization, the longest segment size of same monomer can be simulated, it can be regard as the criterion of the degree of phase separation. Phase separation extent increases with the increase of feeding rate, the simulating results were compared with the experiment of Zhou Xiaoqi, Kong Xiangzheng.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1999年第6期45-48,共4页
Polymer Materials Science & Engineering
关键词
醋酸乙烯
丙烯酸丁酯
乳液共聚
模拟
共聚物
vinyl acetate, butyl acrylate, emulsion copolymerization, Monte Carlo simulating
