Journal article
Effect of Free Surfaces on the Glass Transition Temperature of Thin Polymer Films
Abstract
We report the first measurements of the glass transition temperature Tg for thin freely standing polystyrene (PS) films. We have used Brillouin light scattering to measure Tg for freely standing films of different thicknesses. We find that Tg decreases linearly with film thickness h for h≤700 Å, with a reduction of 70 K for a film with h=290 Å. These measurements characterize unambiguously the effects of the free surface on Tg of thin polymer …
Authors
Forrest JA; Dalnoki-Veress K; Stevens JR; Dutcher JR
Journal
Physical Review Letters, Vol. 77, No. 10, pp. 2002–2005
Publisher
American Physical Society (APS)
Publication Date
September 2, 1996
DOI
10.1103/physrevlett.77.2002
ISSN
0031-9007