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Effect of Free Surfaces on the Glass Transition Temperature of Thin Polymer Films
Abstract
We report the first measurements of the glass transition temperature ${T}_{g}$ for thin freely standing polystyrene (PS) films. We have used Brillouin light scattering to measure ${T}_{g}$ for freely standing films of different thicknesses. We find that ${T}_{g}$ decreases linearly with film thickness $h$ for $h\ensuremath{\le}700\AA{}$, with a reduction of 70 K for a film with $h\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}290\AA{}$. These measurements characterize unambiguously the effects of the free surface on ${T}_{g}$ of thin polymer films. Results are compared to similar results for supported PS films [Keddie et al., Europhys. Lett. 27, 59 (1994)], and we find that their measured values are influenced strongly by the substrate.
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Citations
Cited by
Polymer Nanocomposites—A Comparison between Carbon Nanotubes, Graphene, and Clay as Nanofillers
Bhattacharya, M. (2016) · Materials · doi:10.3390/ma9040262 · Cited by 747
Glass Transition Dynamics and Surface Layer Mobility in Unentangled Polystyrene Films
Yang, Z., Fujii, Y., Lee, F. K., Lam, C.-H., & Tsui, O. K. C. (2010) · Science · doi:10.1126/science.1184394 · Cited by 503
Glass Transition of Stereoregular Poly(methyl methacrylate) at Interfaces
Grohens, Y., Brogly, M., Labbe, C., David, M.-O., & Schultz, J. (1998) · Langmuir · doi:10.1021/la971397w · Cited by 256
Fujie, T., Ricotti, L., Desii, A., Menciassi, A., Dario, P., & Mattoli, V. (2011) · Langmuir · doi:10.1021/la203140a · Cited by 52
Zhong, G., Su, R., Zhang, L., Wang, K., Li, Z., Fong, H., & Zhu, L. (2012) · Polymer · doi:10.1016/j.polymer.2012.08.014 · Cited by 29
Metadata
- Authors
- Forrest, J. A., Dalnoki-Veress, K., Stevens, J. R., & Dutcher, J. R.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1996-09-02
- Volume
- 77
- Issue
- 10
- Pages
- 2002-2005
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2029422848
- Cited by
- 1,106
- References
- 0
- FWCI
- 23.65
- Type
- journal article
- Language
- en
- Open access
- closed
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- Forrest, J. A., Dalnoki-Veress, K., Stevens, J. R., & Dutcher, J. R. (1996). Effect of Free Surfaces on the Glass Transition Temperature of Thin Polymer Films. Physical Review Letters. https://doi.org/10.1103/physrevlett.77.2002
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