【作者】 孙秀威； 鹿颖； 刘术侠；

【Author】 Xiuwei Sun;Ying Lu;Shuxia Liu;Department of Chemistry,Northeast Normal University;

【机构】 东北师范大学化学学院；

【摘要】 磷钨酸与聚乙烯亚胺(PEI)自组装形成稳定的酸碱离子化合物,而后通过与聚乙烯吡咯烷酮进行静电纺丝制备新型质子传导膜。PEI分子具有非常高的柔性,随着工作温度的升高分子构象不断发生变化并且具有活跃的链段运动,这不仅使氢键网络迅速重新取向,质子沿着最优路径进行跳跃,而且为材料提供了自修复的能力。此外,PEI上的胺不断发生质子化和去质子化而后质子随着PEI的链段运动与水分子的运动共同协助运输质子。PEI分子的链段运输质子的过程类似于人乘坐扶梯,因此我们将PEI称作质子扶梯,这为创造质子导电材料提供了新的途径。更多还原

【Abstract】 The phosphotungstic acid anion and the amine protonated in the side chain of polyethyleneimine(PEI) form a stable acid-base ion pair through self-assembly. A novel proton conducting membrane material was prepared by electrostatic spinning by adding polyvinyl pyrrolidone(PVP). PEI molecules have a very high flexibility, the molecular conformation constantly changes at higher temperatures and there is active segmental motion. The conformational transformation of PEI can rapidly reorient the hydrogen bond network and protons hop along the optimal path. In addition, the amines on the PEI continue to undergo protonation and deprotonation, along with the PEI segment movement and water molecules to assist the transport of protons.更多还原