环氧化反式-1,4-聚异戊二烯的环氧度表征  

Characterization of epoxy content of epoxidized trans-1,4-polyisoprene

作　　者：王代强[1] 姚薇[1] 黄宝琛[1] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《弹性体》2009年第3期5-7,34,共4页China Elastomerics

基　　金：国家科技型中小企业技术创新基金项目(07G26213711615)

摘　　要：采用过氧乙酸水相悬浮法制备环氧化反式-1,4-聚异戊二烯(ETPI),通过过酸浓度差法、称重法、红外光谱法、核磁共振法对ETPI环氧度进行表征。结果表明,以核磁共振法测定的环氧度为基准,采用过酸浓度差法、称重法测定的ETPI环氧度误差大于20%;ETPI的红外谱图中A1250/A1383值与环氧度具有很好的线性关系,可以通过核磁共振法和红外谱图校正曲线来校正红外法测定的环氧度。Epoxidized trans - 1,4 -polyisoprene（ETPI） was synthesized by water phase suspension method in this article. The epoxy content of ETPI was characterized by the method of change of peracetic acid concentration, weighing method, IR and ^1 H -NMR. The results showed that the error of the epoxy content of ETPT tested by the change of peracetic acid concentration and weighing method was more than 20% compared with 1 H-NMR. The A1250/A1383 in IR spectrum of ETPI had a good linear relation with the epoxy content tested by 1 H - NMR. The epoxy content of ETPI could be obtained only by IR spectrum.

关 键 词：环氧化反式-1 4-聚异戊二烯 红外 核磁共振 环氧度 

分 类 号：TQ333.3[化学工程—橡胶工业]