通过原子转移自由基聚合制备具有增强相分离形态的接枝聚（亚芳基醚砜）基共聚物作为质子交换膜

Preparation of Graft Poly(Arylene Ether Sulfone)s-Based Copolymer with Enhanced Phase-Separated Morphology as Proton Exchange Membranes via Atom Transfer Radical Polymerization.

作者信息

Zhao Yang, Li Xue, Wang Zhongyang, Xie Xiaofeng, Qian Wei

机构信息

Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China.

Department of Energy, Environmental and Chemical Engineering, Washington University in Saint Louis, St Louis, MO 63130, USA.

出版信息

Polymers (Basel). 2019 Aug 2;11(8):1297. doi: 10.3390/polym11081297.

DOI:10.3390/polym11081297

PMID:31382443

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6722611/

Abstract

Novel proton exchange membranes (PEMs) based on graft copoly(arylene ether sulfone)s with enhanced phase-separated morphology were prepared using atom transfer radical polymerization (ATRP). A series of PEMs with different graft lengths and sulfonation degrees were prepared. The phase-separated morphologies were confirmed by transmission electron microscopy. Among the membranes prepared and evaluated, PAESPS18S2 exhibited considerably high proton conductivity (0.151 S/cm, 85 °C), benefitting from the graft polymer architecture and phase-separated morphology. The membranes also possessed excellent thermal and chemical stabilities. Highly conductive and stable copoly(arylene ether sulfone)-based membranes would be promising candidates as polymer electrolytes for fuel cell applications.

摘要

采用原子转移自由基聚合（ATRP）制备了具有增强相分离形态的新型质子交换膜（PEM），该质子交换膜基于接枝共聚（亚芳基醚砜）。制备了一系列具有不同接枝长度和磺化度的PEM。通过透射电子显微镜确认了相分离形态。在所制备和评估的膜中，PAESPS18S2表现出相当高的质子传导率（85℃时为0.151 S/cm），这得益于接枝聚合物结构和相分离形态。这些膜还具有优异的热稳定性和化学稳定性。高导电性和稳定的基于共聚（亚芳基醚砜）的膜有望成为燃料电池应用的聚合物电解质候选材料。