Dewetting properties of polystyrene homopolymer thin films on grafted polystyrene brush surfaces

Authors
Sharma, S Rafailovich, MH Sokolov, J Liu, Y Qu, S Schwarz, SA Eisenberg, A
Citation
S. Sharma et al., Dewetting properties of polystyrene homopolymer thin films on grafted polystyrene brush surfaces, HIGH PERF P, 12(4), 2000, pp. 581-586
Citations number
12
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
HIGH PERFORMANCE POLYMERS
ISSN journal
09540083 → ACNP
Volume
12
Issue
4
Year of publication
2000
Pages
581 - 586
Database
ISI
SICI code
0954-0083(200012)12:4<581:DPOPHT>2.0.ZU;2-P
Abstract
We have found that the critical molecular weight for auto dewetting of a ho mopolymer on a polymer brush of the same chemical composition is approximat ely N-H = 0.5N(B), in good agreement with the mean field theory prediction. The measured velocity on the brush surface is at least an order of magnitu de faster than that of the polystyrene (PS) on a homopolymer interface, wit h a greatly decreased dependence on the PS molecular weight. This suggests slippage as a possible mechanism for the dewetting dynamics.