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DC pulsed plasma surface treatment of atactic and isotactic polystyrene thin films with oxygen, oxygen-nitrogen mixture and nitrogen: study of wettability

Published online by Cambridge University Press:  25 February 2003

J. Larrieu ,
B. Held ,
F. Clément  and
R. C. Hiorns
J. Larrieu
Affiliation:
Laboratoire d'Électronique des Gaz et des Plasmas, Université de Pau, 64000 Pau, France
B. Held*
Affiliation:
Laboratoire d'Électronique des Gaz et des Plasmas, Université de Pau, 64000 Pau, France
F. Clément
Affiliation:
Laboratoire d'Électronique des Gaz et des Plasmas, Université de Pau, 64000 Pau, France
R. C. Hiorns
Affiliation:
Laboratoire de Physico-Chimie des Polymères, Université de Pau, 64000 Pau, France
*
[email protected]
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Abstract

This article deals with the cold plasma treatment of atactic polystyrene (aPS) and isotactic polystyrene (iPS) thin films with oxygen, oxygen-nitrogen mixture or nitrogen. Experimental results showed that the use of a DC pulsed plasma discharge at low pressure can considerably increase surface hydrophilicity. Variations in macroscopic surface properties were studied by water drop contact angle measurements. It was found that treatment of aPS resulted in a greater change in wettability than that for iPS. This initial observation of the effect of tacticity, and thus polymer microstructure, on surface properties is discussed with regards to the crystalline and helical nature of iPS.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 22 , Issue 1 , April 2003 , pp. 61 - 67
Copyright
© EDP Sciences, 2003

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