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	Mesh-Embedded Polysulfone/Sulfonated Polysulfone Supported Thin Film Composite Membranes for Forward Osmosis
	Zhao, Yuntao1,2; Wang, Xiao1; Ren, Yiwei1; Pei, Desheng1
	2018-01-24
摘要	In this work, mesh-embedded polysulfone (PSU)/sulfonated polysulfone (sPSU) supported thin film composite (TFC) membranes were developed for forward osmosis (FO). The robust mesh integrated in PSU/sPSU sublayer imparts impressive mechanical durability. The blending of hydrophilic sPSU in PSU sublayer affects the hydrophilicity, porosity, pore structure, and pore size of mesh-embedded PSU/sPSU substrates, and the total thickness, cross-linking degree, and roughness of the corresponding TFC-FO membrane active layers. An appropriate incorporation of sPSU not only significantly decreases the structural parameter, S of the mesh-embedded substrate to 220 mu m, which is the lowest reported value for fabric backed FO membrane, but also optimizes the permselectivity of the formed active layer. Regarding the osmosis performance, TFC membranes with sPSU modified substrates gain a higher water flux (J(w)) while keeping the specific reverse salt flux (J(s)/J(w)) low. The optimal TFC-FO membrane has a J(w) of 31.76 LMH with J(s)/J(w) of 0.19 g/L in FO mode when using deionized water feed and 1 M NaCl draw solution. This paper is practical for developing TFC-FO membrane on hydrophilic support membrane materials.
关键词	sulfonated polysulfone forward osmosis mesh-embedded substrate thin film composite membrane structural parameter
DOI	10.1021/acsami.7b15309
发表期刊	ACS APPLIED MATERIALS & INTERFACES
ISSN	1944-8244
卷号	10期号:3页码:2918-2928
收录类别	SCI
WOS记录号	WOS:000423496500083
语种	英语