吡啶型聚醚离子液体的合成及其改性聚丙烯的性能  

Synthesis of pyridine-based polyether ionic liquid and performances of its modified polypropylene

作　　者：刘晖[1] 史铁钧[1] 吴星林[1] 

机构地区：[1]合肥工业大学化工学院,安徽合肥230009

出　　处：《合成橡胶工业》2011年第6期432-435,共4页China Synthetic Rubber Industry

摘　　要：以三氟化硼乙醚络合物为催化剂进行了环氧氯丙烷的阳离子开环聚合,合成了端羟基聚环氧氯丙烷,再将其与吡啶反应,制备了吡啶型聚醚离子液体(PPIL),用傅里叶变换红外光谱和核磁共振氢谱表征了其结构,并研究了PPIL改性聚丙烯(PP)的结晶性能和物理机械性能。结果表明,PPIL起到异相成核作用,改性PP中具有β-晶型结构,且β-晶型质量分数达到20%,较纯PP提高了5个百分点;PPIL改性PP的熔融温度与纯PP相差不大;当PPIL与PP质量比为4∶100时,改性PP的冲击强度较纯PP提高了约8.1%。With boron trifluoride ether complex as catalyst,the hydroxy-terminated polyepichlorohydrin（PECH） was synthesized via cationic ring-opening polymerization of epichlorohydrin.Pyridine-based polyether ionic liquid（PPIL） was prepared from PECH and pyridine.The microstructure of PPIL was characterized by Fourier transform infrared spectroscopy and 1H-nuclear magnetic resonance spectrometry,and the crystallization and mechanical properties of PPIL modified PP were studied.The results showed that PPIL had a heterogeneous nucleating effect on PP matrix,the modified PP had ？-crystal,the mass fraction of which increased to 20%,5 percent points more than pure PP.The melting point of PP/PPIL blends was close to that of pure PP.When PPIL/PP（mass ratio） was 4/100,the impact strength of modified PP increased by about 8.1% compared to pure PP.

关 键 词：吡啶型聚醚离子液体 聚丙烯 改性 微观结构 结晶性能 冲击强度 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]