Microporous polypropylene hollow fiber membrane - Part I. Surface modification by the graft polymerization of acrylic acid | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

4967407

Reference Type

Journal Article

Title

Microporous polypropylene hollow fiber membrane - Part I. Surface modification by the graft polymerization of acrylic acid

Author(s)

Xu, ZK; Wang, JL; Shen, LQ; Men, DF; Xu, YY

Year

2002

Is Peer Reviewed?

Yes

Journal

Journal of Membrane Science
ISSN: 0376-7388

Volume

196

Issue

Page Numbers

221-229

DOI

10.1016/S0376-7388(01)00600-7

Web of Science Id

WOS:000172410000009

Abstract

Surface modification of microporous polypropylene hollow fiber membranes was performed by graft polymerization of acrylic acid. The effects of temperature, polymerization medium, monomer concentration and multifunctional cross-linker on the graft polymerization were studied. The grafting degree on the polypropylene membrane can be greatly increased upon the addition of divinylbenzene (DVB). Scanning electron microscopy (SEM) pictures demonstrated that PAA grafted mainly on the surface of the membrane. Mercury porosimetry analysis revealed that the grafting also took place within the pores. Contact angle and absorbed water measurements showed excellent wetting properties with water for the grafted membranes. The grafted membrane did not show high flux for ultrapure water because the grafting of AA plugs the pores of the membrane. (C) 2002 Elsevier Science B.V. All rights reserved.

Keywords

surface modification; graft polymerization; hydrophilicity; polypropylene hollow fiber membrane