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A reevaluation of forces measured across thin polymer films : nonequillibrium and pinning effects

Horn, R. G., Hirz, S. J., Hadziioannou, G., Frank, C. W. and Catala, J. M. 1989, A reevaluation of forces measured across thin polymer films : nonequillibrium and pinning effects, Journal of Chemical Physics, vol. 90, no. 11, pp. 6767-6774.

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Title A reevaluation of forces measured across thin polymer films : nonequillibrium and pinning effects
Author(s) Horn, R. G.
Hirz, S. J.
Hadziioannou, G.
Frank, C. W.
Catala, J. M.
Journal name Journal of Chemical Physics
Volume number 90
Issue number 11
Start page 6767
End page 6774
Total pages 8
Publisher American Institute of Physics
Place of publication New York, N. J.
Publication date 1989
ISSN 0021-9606
1089-7690
Keyword(s) force & energy
polymers
thin films
Summary We have measured forces between molecularly smooth solid surfaces separated by thin films of molten polydimethylsiloxane. We show that a long-range repulsion reported in earlier work is not an equilibrium force, but can be attributed to viscous drag effects. Consistent with previous results, the viscosity of the film can be modeled by assuming that a layer of polymer molecules is immobilized or ‘‘pinned’’ at each surface for a time longer than the time scale of the measurements. We propose that this pinning is a result of entanglement-like effects in the vicinity of a wall.
Notes Reproduced with the kind permission of the copyright owner.
Language eng
Field of Research 029999 Physical Sciences not elsewhere classified
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©1989, American Institute of Physics
Persistent URL http://hdl.handle.net/10536/DRO/DU:30041460

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.