Chapter

Glass Transition, Dynamics and Heterogeneity of Polymer Thin Films

Volume 252 of the series Advances in Polymer Science pp 107-140

Date:

Heterogeneous Dynamics of Polymer Thin Films as Studied by Neutron Scattering

  • Rintaro InoueAffiliated withInstitute for Chemical Research, Kyoto University
  • , Toshiji KanayaAffiliated withInstitute for Chemical Research, Kyoto University Email author 

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Abstract

This review covers recent progress in studies on the dynamics of polymer thin films in the glassy state and near the glass transition temperature, as revealed by neutron scattering. First, the glassy dynamics including low energy excitation (Boson peak) and the fast localized process of polymer thin films at the picosecond timescale was studied to reveal the effect of film thickness. The dynamic heterogeneity of polymer thin films in the glassy state was also evaluated in terms of non-Gaussian parameters. Second, the glass transition temperature of polymer thin films was investigated using inelastic neutron scattering with high-energy resolution to clarify the mechanism of its dependence on film thickness. Finally, neutron reflectivity was used to study the distribution of glass transition temperature in a multilayered thin film consisting of deuterated polymer and hydrogenated polymer.

Graphical Abstract

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Keywords

Dynamic heterogeneity Inelastic and quasielastic neutron scattering Polymer thin film