自由基引发的高转化率甲基丙烯酸甲酯-苯乙烯共聚物的交叉分级

高等学校化学学报 ›› 1987, Vol. 8 ›› Issue (2): 176.

自由基引发的高转化率甲基丙烯酸甲酯-苯乙烯共聚物的交叉分级

叶锦镛, 骆德莘

复旦大学材料科学研究所

收稿日期:1985-09-06 出版日期:1987-02-24 发布日期:1987-02-24

Cross Fractionation of Radical Initiated Methyl Methacrylate Styrene Copolymer with High Conversion

Ye Jinyong, Luo Dexin

The Institute of Material Science, Fudan University, Shanghai

Received:1985-09-06 Online:1987-02-24 Published:1987-02-24

摘要/Abstract

摘要： 用自由基引发的高转化率甲基丙烯酸甲酯-苯乙烯共聚物在25.0±0.1℃的丙酮-乙腈、一氯代正丁烷-环己烷中进行交叉分级,测定了所得到的35个级分的化学组成和分子量。从实验结果可知,Stockmayer理论对低转化率共聚物及高转化率的MS共聚物的化学组成分布的计算都适用,计算所得分布与交叉分级实验结果基本相符。

Abstract: Methyl methacrylatc-styrene copolymers with high conversion initiated by the radical were cross-fractionated in two solvent-nonsolvent, acetone-acelonitrile and n-butyl chloridc-cyclohcxane, 35 fractions were obtained and their chemical compositions and molecular weights were determined. The results show that the application range of Stockmayer equation should include copolymer with high conversion, if a correction was made to offset the deviation due to the changs of reactivity ratios during the ccpolymerization, a chemical composition distribution curve which is basically in accord with the experimental datum was obtained.

TrendMD:

叶锦镛, 骆德莘. 自由基引发的高转化率甲基丙烯酸甲酯-苯乙烯共聚物的交叉分级. 高等学校化学学报, 1987, 8(2): 176.

Ye Jinyong, Luo Dexin . Cross Fractionation of Radical Initiated Methyl Methacrylate Styrene Copolymer with High Conversion. Chem. J. Chinese Universities, 1987, 8(2): 176.