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Surface modification of polysulfone ultrafiltration membrane by oxygen plasma treatment SCIE SCOPUS

Title
Surface modification of polysulfone ultrafiltration membrane by oxygen plasma treatment
Authors
Kim, KSLee, KHCho, KPark, CE
Date Issued
2002-04-30
Publisher
ELSEVIER SCIENCE BV
Abstract
Oxygen plasma treatment was used to change the hydrophobic polysulfone ultrafiltration membrane to the hydrophilic membrane. The contact angle of water decreased with increasing the oxygen plasma treated time of polysulfone membrane and was saturated with 20 s of oxygen plasma treated time. Functional groups introduced by oxygen plasma treatment were examined using X-ray photoelectron spectroscopy (XPS) and zeta potential of oxygen plasma treated polysulfone membrane was measured using electrophoretic light scattering (ELS) spectrometer. O/C ratio increased from 33 to 50% and isoelectric point (IEP) of membrane surface increased from pH 3 to 4.5. For oxygen plasma treated polysulfone membrane, the flow rates of pure water and gelatin solution increased at all pH range and plasma treated membranes showed less fouling at membrane surface. The mechanisms of reduced fouling and improved cleaning efficiency of oxygen plasma treated polysulfone membrane were also studied. (C) 2002 Elsevier Science B.V. All rights reserved.
Keywords
surface modification; polysulfone ultrafiltration membrane; oxygen plasma; fouling; zeta potential; POLYETHYLENE
URI
https://oasis.postech.ac.kr/handle/2014.oak/19156
DOI
10.1016/S0376-7388(01)00686-X
ISSN
0376-7388
Article Type
Article
Citation
JOURNAL OF MEMBRANE SCIENCE, vol. 199, no. 1-2, page. 135 - 145, 2002-04-30
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조길원CHO, KIL WON
Dept. of Chemical Enginrg
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