Effect of Cross-Linking Agent Chemistry and Coating Conditions on Physical, Chemical, and Separation Properties of PVA-Psf Composite Membranes

被引：25

作者：

Dlamini, Derrick S. ^{[1
,2
,3
]}

Wang, Jinwen ^{[2
,3
]}

Mishra, Ajay K. ^{[1
]}

Mamba, Bhekie B. ^{[1
]}

Hoek, Eric M. V. ^{[2
,3
]}

机构：

[1] Univ Johannesburg, Dept Appl Chem, ZA-2028 Johannesburg, Gauteng, South Africa

[2] Univ Calif Los Angeles, Dept Civil & Environm Engn, Los Angeles, CA USA

[3] Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA USA

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 2014年 / 49卷 / 01期

关键词：

composite membrane; nanofiltration; poly(vinyl alcohol); polysulfone; water treatment; INTERFACIAL PROPERTIES; TRANSPORT; POLYAMIDE;

D O I：

10.1080/01496395.2013.813040

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Composite nanofiltration membranes were formed by depositing ultra-thin, cross-linked polyvinyl alcohol (PVA) film on porous polysulfone (PSf) support membranes following a three step dip-coating procedure. The PVA coating films were cross-linked with aliphatic tricarboxylic acids (cis-/trans-aconitic) and aromatic dicarboxylic acids (phthalic, isophthalic, and terephthalic). Tricarboxylic acid cross-linked PVA was less crystalline and slightly more hydrophilic relative to PVA films cross-linked by aromatic dicarboxylic acids suggesting that the tricarboxylic acids are more effective is disrupting PVA crystallinity than the dicarboxylic acids. Cross-linked PVA-PSf composite membranes rejected NaCl and MgSO4 in the order: trans-aconitic acid<cis-aconitic acid<terephthalic acid<isophthalic acid<phthalic acid.

引用

页码：22 / 29

页数：8

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