Volume 75, Number 2, July 2006
|Page(s)||274 - 280|
|Section||Condensed matter: structural, mechanical and thermal properties|
|Published online||21 June 2006|
Chain length effects on confined polymer/polymer interfaces
Laboratoire PPMD, Ecole Supérieure de Physique et Chimie Industrielle Paris, France
2 Department of Physics and Astronomy, University of Sheffield - Sheffield, UK
3 Département de Physique, Université Libre de Bruxelles - Boulevard du Triomphe CP 223, 1050 Bruxelles, Belgium
Corresponding author: firstname.lastname@example.org
Accepted: 29 May 2006
We explored how the effect of confinement on interfacial fluctuations at the polymer/polymer interface depends on the chain lengths of the macromolecules. Polymer bilayers of polyolefins of various degrees of polymerisation and conditions of miscibility were investigated by performing neutron reflectivity experiments. Our results show that the molecular weight has an important role in influencing the dependence of the interfacial width on film thickness at higher values of the interaction parameter, while for more miscible polymer pairs, and thus broader interfaces, the effect of confinement is not strongly dependent on the chain length.
PACS: 61.41.+e – Polymers, elastomers, and plastics / 61.12.Ha – Neutron reflectometry / 68.35.Fx – Diffusion; interface formation
© EDP Sciences, 2006
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