Glass transition and molecular mobility in polymer thin films
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概要
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Extensive studies on polymer thin films to date have revealed their interesting but unusual properties such as film thickness dependence of glass transition temperature Tg and thermal expansivity. Recent studies have shown that the lower Tg is not always related to the higher mobility in polymer thin films, which contradicts our current understanding of the glass transition process. In this work, we report the results of inelastic neutron-scattering measurements on polystyrene thin films using two spectrometers with different energy resolutions as well as ellipsometry measurements. The results are interpreted in terms of cooperatively rearranging region and motional slowing down due to the surface effect that explain plausibly the anomalous relationship between the glass transition temperature Tg and the molecular mobility in thin films.
論文 | ランダム
- 座長集約 : 脳神経核医学検査の技術的問題点 : 第45回総会シンポジウム
- RI-2 : 演題番号152〜156
- RI-4 PET他(演題番号180〜183) : 第44回総会学術研究発表座長集約
- 座長集約 : RI-4 SPECT (演題番号63〜66) : 第14回秋季学術大会座長集約
- 2.品質管理班(インビボ)(第40回総会部会および各分科会報告)(核医学分科会)