This paper describes methodologies that have been developed for studying the physical aging of free-standing thin polymer films and its effect on gas permeability. Both solution casting and spin coating methods were used to obtain thin polysulfone films having thicknesses in the range of 400-1000 nm
Physical aging of layered glassy polymer films via gas permeability tracking
โ Scribed by Thomas M. Murphy; D.S. Langhe; M. Ponting; E. Baer; B.D. Freeman; D.R. Paul
- Book ID
- 113857479
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 1005 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0032-3861
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๐ SIMILAR VOLUMES
Previous studies have documented the dramatic effects of film thickness, at least compared to the bulk state, and the more modest effects of aging temperature and polymer structure on physical aging of thin glassy polymer films. In this paper, these results are interpreted in terms of the free volum
The physical aging behavior of thin glassy polysulfone (PSF) films (w125 nm) with different previous histories was tracked using gas permeability measurements. The initial states of these materials were modulated by thermal annealing at fixed temperatures below the glass transition or by exposure to