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Langmuir. 2008 Jun 17;24(12):5977-80. doi: 10.1021/la800527q. Epub 2008 May 20.

The reversible giant change in the contact angle on the polysulfone and polyethersulfone films exposed to UV irradiation.

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  • 1Ariel University Center of Samaria, the Research Institute, 40700, Ariel, Israel.

Erratum in

  • Langmuir. 2009 Apr 21;25(8):4828.

Abstract

Water contact angles on polysulfone and polyethersulfone films exposed to UV irradiation have been found to decrease dramatically. We relate this phenomenon to the formation and release of disulfonic acid from the irradiated films, a well-known surfactant. The phenomenon appears to be reversible, namely, cleansed surfaces retained their initial contact angle. The revealed phenomenon may provide a means of controlling the spreading of liquids on polysulfone and polyethersulfone films and seems promising for use in microfluidics applications.

PMID:
18489187
[PubMed]
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