Structural relaxation of spin-cast glassy polymer thin films as a possible factor in dewetting.
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Richardson, H, Carelli, C, Keddie, JL and Sferrazza, M (2003) Structural relaxation of spin-cast glassy polymer thin films as a possible factor in dewetting. Eur Phys J E Soft Matter, 12 (3). 437 - 440. ISSN 1292-8941
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Official URL: http://dx.doi.org/10.1140/epje/e2004-00013-8
Abstract
Reiter has recently reported a situation in which the dewetting of quasi-solid films is linked to plastic deformation--rather than viscous flow--resulting from capillary forces. Herein we propose that, in thin films of some glassy polymers--especially poly(methyl methacrylate) (PMMA)--prepared by spin-casting from solvent, structural relaxation might impart sufficient stress to cause plastic deformation. We find that PMMA films decrease in thickness by several percent, which is sufficient to create significant stress in those cases in which the film is attached to a rigid substrate. The floating technique, which can take tens of minutes, might allow most of the structural relaxation to occur prior to dewetting experiments.
| Item Type: | Article |
|---|---|
| Additional Information: | The original publication is available at http://www.springerlink.com |
| Divisions: | Faculty of Engineering and Physical Sciences > Physics |
| ID Code: | 158567 |
| Deposited By: | Symplectic Elements |
| Deposited On: | 26 Jan 2012 12:47 |
| Last Modified: | 08 Jun 2013 15:19 |
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