裂解色谱法鉴别环氧乙烷-环氧丙烷的无规共聚物和嵌段共聚物  

Identification of Ethyleneoxide-Propyleneoxide Random Copolymer and Block Copolymer

作　　者：陈爱英[1] 刘尔嘉[1] 

机构地区：[1]北京服装学院精细化工系,北京100029

出　　处：《北京服装学院学报（自然科学版）》1999年第1期47-52,共6页Journal of Beijing Institute of Fashion Technology：Natural Science Edition

摘　　要：研究了用裂解色谱法鉴别环氧乙烷一环氧丙烷无规共聚物和嵌段共聚物的方法．选择二氧六环、二甲基二氧六环和甲基二氧六环为特征峰，以甲基二氧六环分别对二氧六环和二甲基二氧六环校正峰面积的比值为特征参数，可以鉴别无规和嵌段聚醚；对此两者的混合物也可在不经分离的情况下作出判断．该方法简单，快速，样品用量少．A pyrolysis gas chromatographic method is used for distinction betweenpolyoxyethylene-polyoxypropylene random copolymer and block copolymer. In pyrolysisproducts, dioxane ,dimethyl dioxane and methyl dioxane are chosen as characteristic peaks.Ratios of corrected Peak areas of methyl dioxane to dioxane and dimethyl dioxane aredefined respectively as characteristic parameters. According to these parameters, mismethod can be applied successfully to identify not only random and block copolymerbut also mixtures of the two kinds of copolymer. The method is simple, rapid andaccuracy.

关 键 词：环氧乙烷 环氧丙烷 聚醚 裂解色谱 共聚物 

分 类 号：O633.1[理学—高分子化学]