乙烯醇—醋酸乙烯嵌段共聚物的制备  

Preparation of Vinyl Alcohol-Vinyl Acetate Block Copolymers

作　　者：吴永忠[1] 

机构地区：[1]中国石化集团四川维尼纶厂研究所,重庆401254

出　　处：《合成化学》2002年第5期430-433,共4页Chinese Journal of Synthetic Chemistry

摘　　要：采用混合溶剂醇解法制备嵌段聚乙烯醇 ,考察了混合溶剂甲醇 /苯质量百分比、醇解催化剂碱的用量、醇解温度、时间等工艺条件对嵌段特性的影响。在优化条件下制备了嵌段特征为 0 .4～ 0 .6 。Vinyl alcohol-vinyl acetate block copolymers was prepared by hydrolysis of poly vinyl acetate in a solvent of methanol and benzene. The effects of the ratio of methanol to benzene, the catalytic base concentration, the reaction temperature and time on the block properties were studied. Under optimize condition, a sample of P(VA-VAc) with block characteristic value 0.4~0.6 and good surfactancy was prepared.

关 键 词：聚醋酸乙烯 聚乙烯醇 嵌段聚合物 混合溶剂醇解法 

分 类 号：O632.31[理学—高分子化学]