Effect of Long Range Interactions on the Glass Transition Temperature of Thin Polystyrene Films

Cui Zhang; Yoshihisa Fujii; Keiji Tanaka

doi:10.1021/mz300391g

Effect of Long Range Interactions on the Glass Transition Temperature of Thin Polystyrene Films

ACS Macro Lett. 2012 Nov 20;1(11):1317-1320. doi: 10.1021/mz300391g. Epub 2012 Oct 25.

Authors

Cui Zhang¹, Yoshihisa Fujii², Keiji Tanaka²

Affiliations

¹ Department of Applied Chemistry and ‡International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
² Department of Applied Chemistry and International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.

PMID: 35607164
DOI: 10.1021/mz300391g

Abstract

The glass transition temperature (T_g) of thin polystyrene (PS) films supported on silicon wafers with oxide layers of varying thickness was characterized by the temperature dependence of the film thickness using ellipsometry. This allowed us to uncover how a long-range interaction affects the T_g of polymer films. As previously reported using a variety of methods, the T_g decreased with decreasing film thickness. However, the extent was not the same among the reports. In this study, we found that the T_g attenuation of a PS film of a given thickness was dependent on the oxide layer thickness of the silicon wafer via the long-range interaction.