咪唑基聚离子液体微球的制备及其电流变性能  

Preparation and Electrorheological Properties of Imidazolium-based Poly(ionic liquid) Microspheres

作　　者：张志刚 张红阳 郝博男 王梦[1] 张海全[1] 刘迎丹 张振琳[1] ZHANG Zhigang ZHANG Hongyang HAO Bonan WANG Meng ZHANG Haiquan LIU Yingdan ZHANG Zhenlin(State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, Chin)

机构地区：[1]燕山大学亚稳材料制备技术与科学国家重点实验室,材料科学与工程学院,秦皇岛066004

出　　处：《材料研究学报》2017年第9期679-686,共8页Chinese Journal of Materials Research

基　　金：国家自然科学基金(21403186,51703193);河北省自然科学基金(E2015203257);河北省高等学校科学技术研究项目(QN20131070)~~

摘　　要：用分散聚合方法制备了微米尺寸的咪唑基聚离子液体(PIL)微球颗粒(P[C12VIm][BF4]),使用核磁氢谱、傅里叶红外光谱仪、X射线衍射分析仪和扫描电镜等手段表征材料的结构及形貌,用旋转流变仪和宽频介电谱仪测量了电流变效应和介电性能。结果表明,咪唑基聚离子液体材料具有规则的球形和良好的热稳定性;用这种材料制备的电流变液具有显著的电流变效应,其剪切应力、黏度以及动态模量都随着电场强度的提高而增大,显示出优良的电流变性能。Imidazolium-based poly（ionic liquid）（PIL） microspheres, poly（1-dodecyl-3-vinylimidazolium tetrafluoroborate）（P[C12 VIm] [BF4]）, were synthesized through a dispersion polymerization process.The structure and morphology of the PIL microspheres were characterized by means of1 H nuclear magnetic resonance, Fourier infrared spectrometer, X-ray diffractometer and scanning electron microscopy.Their electrorheological and dielectric properties were measured by rotational rheometer and broad-band dielectric spectrometer, respectively. The results show that imidazolium-based PIL material is well-defined microspheres and has excellent thermal stability. In this PIL electrorheological system, a remarkable electrorheological effect was observed, in which shear stress, viscosity and dynamic modulus increase with the increasing electric field strength.

关 键 词：有机高分子材料 聚离子液体 电流变 分散聚合 咪唑 

分 类 号：O632.6[理学—高分子化学]