The effect of direct fluorination of polydimethylsiloxane films on their surface properties

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To investigate the effect of fluorination on the surface of polydimethylsiloxane (PDMS) film, direct fluorination was performed under a mild condition (approx. 2000 mu mol/mol F(2) in nitrogen) for 120 min. No structural damage of PDMS films was observed on the scanning electron microscopic images under the condition. Fourier-transform infrared/attenuated total reflectance (FTIR/ATR) and energy dispersive Xray spectroscopy (EDS) results showed a successful fluorine introduction resulting in the structural change of PDMS. Surface property changes of PDMS films with respect to the extent of direct fluorination were also examined. Contact angles of water and alcohols on the PDMS surfaces decreased as fluorination time increased. Most alcohols showed greater decrease than water in the contact angle as a result of long-term fluorination, which sometimes results in zero contact angles of alcohols on the PDMS Surfaces. Surface energy of PDMS films increased more than 200% after the direct fluorination for 120 min. (C) 2008 Elsevier Inc. All rights reserved
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Issue Date
2009-04
Language
English
Article Type
Article
Keywords

INDUSTRIAL APPLICATIONS; FUNDAMENTAL RESEARCH; TRANSPORT-PROPERTIES; POLYMERS; MEMBRANES

Citation

JOURNAL OF COLLOID AND INTERFACE SCIENCE, v.332, no.2, pp.461 - 466

ISSN
0021-9797
DOI
10.1016/j.jcis.2008.12.062
URI
http://hdl.handle.net/10203/8499
Appears in Collection
CE-Journal Papers(저널논문)
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