Heterogeneous and Aging Dynamics in Single and Stacked Thin Polymer Films
作者： Koji Fukao , Takehide Terasawa , Kenji Nakamura , Daisuke Tahara
DOI: 10.1007/12_2012_172
关键词:
摘要: The glass transition and the a-process above temper- ature, Tg, aging dynamics below Tg were investigated for single stacked thin polymer films. First, of films polystyrene (PS) poly(2-chlorostyrene) (P2CS) measured using differ- ential scanning calorimetry dielectric relaxation spectroscopy. as-stacked PS is much less than that bulk sample. However, after annealing at high temperatures exhibit a temperature almost equal to system. P2CS show very slow time evolution from film-like bulk-like during isothermal process. dependence changes Arrhenius-like Vogel-Fulcher-Tammann with an increase in time. Secondly, ultrathin thicknesses 10 nm imaginary part susceptibility, e 00 , thickness 3.7 increases time, but this not case thicker 9.0 nm. This anomalous strongly correlated
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