A Supramolecular Approach to Probing the Influence of Micro-Phase Structure on Gas Permeability of Block Copolymer Membranes

doi:10.1166/sam.2013.1591

CORC > 化学研究所 > 中国科学院化学研究所

	A Supramolecular Approach to Probing the Influence of Micro-Phase Structure on Gas Permeability of Block Copolymer Membranes
	Li, Xianwu 1; Tian, Tong 1; Leolukman, Melvina 2; Wang, Yao 1; Jiang, Lei 1,3
刊名	SCIENCE OF ADVANCED MATERIALS
	2013-07-01
卷号	5 期号:7 页码:719-726
关键词	Self-assembly Of Block Copolymer Nanostructure Hydrogen Bonding Gas Permeation Membranes
ISSN号	1947-2935
DOI	10.1166/sam.2013.1591
英文摘要	To gain insight into the correlation between the gas permeability and the micro-structures inside gas separation polymeric membranes, a series of membranes which have similar film thickness but different micro-structure have been fabricated based on block copolymer polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP). In this work, it has been realized that the micro-structure inside the membrane switched from well-ordered spherical phase to well-ordered cylindrical phase, via simply controlling the hydrogen bonding amounts of the guest molecule M, 12-(1-(dimethyl amino) ethylidene amino) dodecanoic acid. That is, supramolecularly assembling the host copolymer PS-b-P4VP with guest molecule M essentially changes the volume fraction of P4VP/M domains in the membrane. The hydrogen bonding interaction between the P4VP blocks and the molecule M has been confirmed by fourier transform infrared (FT-IR) measurement. The morphologies of the membranes have been investigated using transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS). After studying the gas permeability of the supramolecularly assembled membranes with the well-ordered microphase structures, we found that the gas permeances for He, N-2, CO2 of the membranes with well-ordered nanostructure increased in magnitude, which we propose was attributed to the enhanced interface between the different phase domains. An appropriate mechanism has been put forward accordingly. This work provides a new strategy of probing the influence of different micro-phase structure inside block copolymer membranes on gas permeability through supramolecular self-assembly.
语种	英语
出版者	AMER SCIENTIFIC PUBLISHERS
WOS记录号	WOS:000322604900001
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/54579]
专题	中国科学院化学研究所
通讯作者	Wang, Yao
作者单位	1.Beihang Univ, Key Lab Bioinspired Smart Interfacial Sci & Techn, Minist Educ, Sch Chem & Environm, Beijing 100191, Peoples R China 2.3M Co, Corp Res Mat Lab 3M, Singapore 738025, Singapore 3.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, BNLMS, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li, Xianwu,Tian, Tong,Leolukman, Melvina,et al. A Supramolecular Approach to Probing the Influence of Micro-Phase Structure on Gas Permeability of Block Copolymer Membranes[J]. SCIENCE OF ADVANCED MATERIALS,2013,5(7):719-726.
APA	Li, Xianwu,Tian, Tong,Leolukman, Melvina,Wang, Yao,&Jiang, Lei.(2013).A Supramolecular Approach to Probing the Influence of Micro-Phase Structure on Gas Permeability of Block Copolymer Membranes.SCIENCE OF ADVANCED MATERIALS,5(7),719-726.
MLA	Li, Xianwu,et al."A Supramolecular Approach to Probing the Influence of Micro-Phase Structure on Gas Permeability of Block Copolymer Membranes".SCIENCE OF ADVANCED MATERIALS 5.7(2013):719-726.