Volume 71, Number 5, September 2005
|Page(s)||763 - 769|
|Section||Condensed matter: structural, mechanical and thermal properties|
|Published online||03 August 2005|
The effects of long-ranged and short-ranged forces in confined near-critical polymeric liquids
Department of Physics, University of Surrey - Guildford, UK
2 Department of Physics and Astronomy, University of Sheffield - Sheffield, UK
3 ILL, Institute Max Von Laue-Paul Langevin - Grenoble, France
4 Hahn-Meitner Institut - Berlin, Germany
5 SINQ, Paul Scherrer Institut - Villigen, Switzerland
6 ISIS, Rutherford Appleton Laboratory - Chilton, UK
7 Fakultät für Physik, Universität Bielefeld - Bielefeld, Germany
8 Département de Physique, Université Libre de Bruxelles Boulevard du Triomphe, CP 223, 1050 Bruxelles, Belgium
Corresponding author: email@example.com
Accepted: 8 July 2005
The relative importance of long- and short-ranged forces on the thermal fluctuations at polymer interfaces was investigated with neutron reflection. Polyolefin blends were synthesised to create polymer pairs with a tuned interaction parameter, allowing the exploration of situations from near criticality to strongly immiscible cases in thin-film systems. We have observed for the polymer interfacial width, a transition from a region where long-ranged forces dominate, at higher degree of incompatibility, to a region approaching criticality where short-ranged truncation forces are more relevant.
PACS: 61.41.+e – Polymers, elastomers, and plastics / 61.12.Ha – Neutron reflectometry / 68.35.Fx – Diffusion; interface formation
© EDP Sciences, 2005
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