Mesoscale modeling of sulfonated polyimides copolymer membranes: Effect of sequence distributions

doi:10.1016/j.memsci.2018.07.008

CORC > 化学研究所 > 中国科学院化学研究所

	Mesoscale modeling of sulfonated polyimides copolymer membranes: Effect of sequence distributions
	Hu, Chenchen 1,2; Lu, Teng 1; Guo, Hongxia 1,2
刊名	JOURNAL OF MEMBRANE SCIENCE
	2018-10-15
卷号	564 页码:146-158
关键词	Proton Exchange Membrane Sulfonated Polyimide Sequence Distribution Dissipative Particle Dynamics Simulation Structure And Property
ISSN号	0376-7388
DOI	10.1016/j.memsci.2018.07.008
英文摘要	We adopt dissipative particle dynamics simulation technique and systematically study the effect of sequence distributions of hydrophobic and hydrophilic segments in individual sulfonated polyimide (SPI) copolymer on the micro-phase separated structure and the performance of proton exchange membranes (PEMs) under various water contents. The phase morphology as well as the shape and size of water channels is affected by sequence distributions. Compared to the di-block copolymer and the alt-copolymer, water channels in the multi-block copolymer are more homogenous. Additionally, the copolymer sequence distributions affect the water transport which is closely related to the proton conductivity, the dimensional stability and the mechanical properties of PEMs via tuning the phase structure. Generally, the more homogenous water channels the faster water transport. As for the dimensional stability, unlike the other two copolymers the unique shrinkage behavior of multi-block copolymer can resist the membrane swelling induced by water uptake. Moreover, the system with short block has relatively large Young's modulus and the influence of sequence distributions on Young's modulus weakens with the addition of water. Consequently, the multi-block SPI copolymer possesses fast water transport, low dimension-swelling and relatively high Young's modulus, which will make it a potentially huge application in PEM.
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000442653900015
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/42397]
专题	中国科学院化学研究所
通讯作者	Guo, Hongxia
作者单位	1.Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Joint Lab Polymer Sci & Mat,Beijing Natl Lab Mol, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Hu, Chenchen,Lu, Teng,Guo, Hongxia. Mesoscale modeling of sulfonated polyimides copolymer membranes: Effect of sequence distributions[J]. JOURNAL OF MEMBRANE SCIENCE,2018,564:146-158.
APA	Hu, Chenchen,Lu, Teng,&Guo, Hongxia.(2018).Mesoscale modeling of sulfonated polyimides copolymer membranes: Effect of sequence distributions.JOURNAL OF MEMBRANE SCIENCE,564,146-158.
MLA	Hu, Chenchen,et al."Mesoscale modeling of sulfonated polyimides copolymer membranes: Effect of sequence distributions".JOURNAL OF MEMBRANE SCIENCE 564(2018):146-158.