低不饱和度聚醚多元醇的结构与表征  

Study on the Structure of Low Unsaturated Polyether Polyols

作　　者：杨冬梅[1] 范仲勇[1] 涂建军[2] 石正金[2] 王巍[2] 于瀛[1] 

机构地区：[1]复旦大学材料科学系,上海200433 [2]上海石油化工研究院,上海201208

出　　处：《复旦学报（自然科学版）》2006年第3期380-384,共5页Journal of Fudan University：Natural Science

基　　金：国家自然科学基金资助项目(20474013);上海石油化工研究院合作研究资助项目

摘　　要：采用红外、核磁、质谱、GPC等实验方法分别对低不饱度聚醚多元醇环氧丙烷(PO)/环氧乙烷(EO)共聚醚、环氧丙烷(PO)均聚醚进行了链结构的组成及序列结构分析.由红外光谱中1 374和1 010 cm-1的特征吸收峰确定了链中的氧丙基团.MALDI-TOF-MS确定了样品的组成和分子质量,且与GPC测试的结果进行了对比;1H NMR计算出了样品的起始剂甘油在单体的质量百分数为4.0%,共聚醚链中EO的质量百分数为8%.利用13C NMR测试结果推测出了样品链段中的两单元或三单元的序列结构.The structures of propylene oxide-ethylene oxide copolymers, and polypropylene were investigated by FTIR, 1^H NMR, 13^C NMR, MALDI-TOF-MS, and GPC. Two weak characteristic absorption peaks of polyoxopropyl were observed at 1 374 and 1 010 cm^-1 by FTIR. The compositions, molecular mass weights and the molecular weight distributions of the polymers were confirmed by MALDI-TOF-MS. The contents of the initiators and FAD were calculated by using 1^H NMR,and the sequence distributions of various the diads and triads units were established by 13^C NMR.

关 键 词：红外光谱 核磁共振波谱 GPC 质谱 聚醚多元醇 

分 类 号：O631.1[理学—高分子化学]