Volume 33, Number 1, January I 1996
|Page(s)||29 - 34|
|Section||Condensed matter: structure, thermal and mechanical properties|
|Published online||01 September 2002|
Improving adhesion via connector polymers to stabilize non-wetting liquid films
Institut de Chimie des Surfaces et Interfaces, CNRS 15, rue
Jean Starcky, 68057 Mulhouse, France
2 Institut Curie, Section de Physique et Chimie, URA 448 du CNRS 11, rue Pierre et Marie Curie, 75231 Paris, Cedex 05, France
3 Laboratoire Léon Brillouin, CEN Saclay - 91191 Gif-sur-Yvette Cedex, France
Accepted: 16 November 1995
We report dewetting experiments of thin polystyrene films on bi-modal polystyrene brushes. The areal density and the length of the longer brush molecules (= the connectors) were varied. The dewetting velocity decreased with increasing number of connectors and reached zero at a certain value which depended on the length of the connectors. Stabilization of the film was achieved by compensating the capillary driving forces by the connector pull-out forces. A theoretical explanation of the experimental results is given.
PACS: 68.15.+e – Liquid thin films / 68.10.Cr – Surface energy (surface tension, interface tension, angle of contact, etc.) / 61.25.Hq – Macromolecular and polymer solutions; polymer melts
© EDP Sciences, 1996
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