Novel PVA-silica nanocomposite membrane for pervaporative dehydration of ethylene glycol aqueous solution

被引：122

作者：

Guo, Ruili ^{[1
]}

Ma, Xiaocong ^{[1
]}

Hu, Changlai ^{[1
]}

Jiang, Zhongyi ^{[1
]}

机构：

[1] Tianjin Univ, Key Lab Green Chem Technol, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

来源：

POLYMER | 2007年 / 48卷 / 10期

关键词：

poly(vinyl alcohol)-silica; nanocomposite membranes; pervaporation dehydration;

D O I：

10.1016/j.polymer.2007.03.035

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

To effectively suppress the swelling of poly(vinyl alcohol) (PVA) membrane, polymer-inorganic nanocomposite membranes composed of PVA and gamma-mercaptopropyltrimethoxysilane (MPTMS) were prepared by in situ sol-gel technique for pervaporative separation of water-ethylene glycol (EG) mixtures. Effects of the types of catalyst for sol-gel process and MPTMS content on the physical and chemical structure of PVA-silica nanocomposite membranes (designated as PVA-MPTMS hereafter) were investigated by 29 Si NMR, FTIR, SEM, XRD and TGA-DTA. Due to the formation of more compact crosslinked structure, nanocomposite membranes exhibited enhanced thermal stability. It was found that when 50 wt% of MPTMS was incorporated into PVA, the nanocomposite membranes possessed optimum pervaporation performance for 80 wt% EG aqueous solution at 70 degrees C. Unexpectedly, there was no improvement in the pervaporation performance of PVA-MPTMS nanocomposite membranes after mercapto group was oxidized into sulfonic group. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2939 / 2945

页数：7

共 25 条

[1] Acid-functionalized amorphous silica by chemical grafting quantitative oxidation of thiol groups [J].

Cano-Serrano, E ;

Blanco-Brieva, G ;

Campos-Martin, JM ;

Fierro, JLG .

LANGMUIR, 2003, 19 (18) :7621-7627

[2] Realisation of siloxane ionomers by mild oxidation of alkylmercaptosiloxanes [J].

Evans, PJ ;

Slade, RCT ;

Varcoe, JR ;

Young, KE .

JOURNAL OF MATERIALS CHEMISTRY, 1999, 9 (12) :3015-3021

[3] Membranes for gas separation based on poly(1-trimethylsilyl-1-propyne)-silica nanocomposites [J].

Gomes, D ;

Nunes, SP ;

Peinemann, KV .

JOURNAL OF MEMBRANE SCIENCE, 2005, 246 (01) :13-25

[4] PVA-GPTMS/TEOS hybrid pervaporation membrane for dehydration of ethylene glycol aqueous solution [J].

Guo, Ruili ;

Hu, Changlai ;

Pan, Fusheng ;

Wu, Hong ;

Jiang, Zhongyi .

JOURNAL OF MEMBRANE SCIENCE, 2006, 281 (1-2) :454-462

[5] The thermal degradation of poly(vinyl alcohol) [J].

Holland, BJ ;

Hay, JN .

POLYMER, 2001, 42 (16) :6775-6783

[6] Competitive polymerization between organic and inorganic networks in hybrid materials [J].

Innocenzi, P ;

Brusatin, G ;

Babonneau, F .

CHEMISTRY OF MATERIALS, 2000, 12 (12) :3726-3732

[7] Infrared spectroscopy of sol-gel derived silica-based films: a spectra-microstructure overview [J].

Innocenzi, P .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2003, 316 (2-3) :309-319

[8] Filled poly(2,6-dimethyl-1,4-phenylene oxide) dense membranes by silica and silane modified silica nanoparticles:: characterization and application in pervaporation [J].

Khayet, M ;

Villaluenga, JPG ;

Valentin, JL ;

López-Manchado, MA ;

Mengual, JI ;

Seoane, B .

POLYMER, 2005, 46 (23) :9881-9891

[9] In situ crosslinking of chitosan and formation of chitosan-silica hybrid membranes with using γ-glycidoxypropyltrimethoxysilane as a crosslinking agent [J].

Liu, YL ;

Su, YH ;

Lai, JY .

POLYMER, 2004, 45 (20) :6831-6837

[10] Crosslinked organic-inorganic hybrid chitosan membranes for pervaporation dehydration of isopropanol-water mixtures with a long-term stability [J].

Liu, YL ;

Su, YH ;

Lee, KR ;

Lai, JY .

JOURNAL OF MEMBRANE SCIENCE, 2005, 251 (1-2) :233-238

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