Modification of ultrafiltration polyacrylonitrile membranes by sequential grafting of oppositely charged monomers: pH-dependent behavior of the modified membranes

被引：18

作者：

Belfer, S ^{[1
]}

机构：

[1] Ben Gurion Univ Negev, Inst Appl Res, IL-84105 Beer Sheva, Israel

来源：

REACTIVE & FUNCTIONAL POLYMERS | 2003年 / 54卷 / 1-3期

关键词：

grafting onto PAN; ATR-FTIR; layered membranes; alternatively charged monomers;

D O I：

10.1016/S1381-5148(02)00191-8

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The grafting of oppositely charged water-soluble monomers onto:a polyacrylonitrile (PAN) ultrafiltration (UF) membrane and the consequent stratification processes were investigated by means of attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy. The grafting of monomers with sulfo-acidic groups was increased when it was,conducted on a membrane previously grafted with the presence of oppositely charged amine groups increased the grafting of exposed,to buffer solutions having different pH values, their ATR-FTIR spectra revealed that chemical changes had occurred both within the layers and on the surface. The pH-dependent behavior of the bilayered membranes showed that,the first-layer grafts had interpenetrated, to a certain extent, into the second layer of the polyelectrolyte and vice versa. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：155 / 165

页数：11

共 39 条

[1]

ADERHOLD M, Patent No. 4229530

[2]

AKASHIMA K, 1999, B CHEM SOC JPN, V72, P12333

[3] Surface modification of commercial composite polyamide reverse osmosis membranes [J].

Belfer, S ;

Purinson, Y ;

Fainshtein, R ;

Radchenko, Y ;

Kedem, O .

JOURNAL OF MEMBRANE SCIENCE, 1998, 139 (02) :175-181

[4]

Belfer S, 1998, ACTA POLYM, V49, P574, DOI 10.1002/(SICI)1521-4044(199810)49:10/11<574::AID-APOL574>3.0.CO

[5]

2-0

[6] Surface characterization by FTIR-ATR spectroscopy of polyethersulfone membranes-unmodified, modified and protein fouled [J].

Belfer, S ;

Fainchtain, R ;

Purinson, Y ;

Kedem, O .

JOURNAL OF MEMBRANE SCIENCE, 2000, 172 (1-2) :113-124

[7]

CHENING J, 1997, MACROMOLECULES, V30, P271

[8] Infrared characterization and determination of self-association equilibrium constants for methacrylic acid copolymers [J].

Cleveland, CS ;

Fearnley, SP ;

Hu, YH ;

Wagman, ME ;

Painter, PC ;

Coleman, MM .

JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS, 2000, B39 (02) :197-223

[9]

COLTHUP N, 1998, INTRO INFRARED RAMAN, P325

[10]

DANTZENBERG H, 1994, POLYELECTROLYTES FOR, P18

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