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Glass Transition Temperature in Confined Polymers

Published online by Cambridge University Press:  26 February 2011

Rahmi Ozisik ,
Tong Liu  and
Richard W. Siegel
Rahmi Ozisik
Affiliation:
ozisik@rpi.edu, Rensselaer Polytechnic Institute, Materials Science and Engineering, 110 Eight Street, Troy, NY, 12180, United States
Tong Liu
Affiliation:
liut@rpi.edu, Rensselaer Polytechnic Institute, Materials Science and Engineering, Troy, NY, 12180, United States
Richard W. Siegel
Affiliation:
rwsiegel@rpi.edu, Rensselaer Polytechnic Institute, Materials Science and Engineering, Troy, NY, 12180, United States
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Abstract

Glass transition temperature of polyetherimide (PEI) thin films and nanoporous PEI samples was investigated using differential scanning calorimetry. In both of these systems, the glass transition temperature decreased with respect to the bulk value. In the nanoporous system, scanning electron microscope images were used to characterize pore size distribution, and Monte Carlo simulations were performed to calculate the nearest neighbor pore-to-pore distances. Pore-to-pore distances and thin film thickness values were used to establish a quantitative analogy between thin films and nanoporous system.

Keywords

thin filmpolymernanostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 977: Symposium FF – Processing-Structure-Mechanical Property Relations in Composite Materials , 2006 , 977-FF12-15
Copyright
Copyright © Materials Research Society 2007

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