1. Open Access Kent State
  2. Relaxation Dynamics of Rubbed Polystyrene Thin Films
Author(s)
Abstract

Optical retardation measurements were used to probe the chain relaxation dynamics in rubbed polystyrene films of varying thicknesses on glass substrates. A model based on Kohlrausch-Williams-Watts relaxation was developed and used to determine the glass transition temperature (Tg) of the films. Results showed reductions of 15–20 K in Tg for thin films of thicknesses comparable to the radius of gyration as well as for cast films rubbed with different strengths. These results provide evidence of a faster relaxation dynamics relative to the polymer-substrate interface for thinner films and enhanced chain mobility at the polymer-air interface.
Format
Article
Identifier(s)
10.1209/epl/i2000-00388-9
Publication Date
2000-09-01
Publication Title
Europhysics Letters
Volume
51
Issue
6
First Page
655
Last Page
660
Keywords
Subject
Community
Department of Physics
Comments

Copright 2000 Institute of Physics. Available on publisher's website at http://dx.doi.org/10.1209/epl/i2000-00388-9.
Permalink https://oaks.kent.edu/phypubs/90
Agra-Kooijman, D., Schwab, A., Kim, J.-H., Kumar, S., & Dhinojwala, A. (2000). Relaxation Dynamics of Rubbed Polystyrene Thin Films. Europhysics Letters. https://doi.org/10.1209/epl/i2000-00388-9
Agra-Kooijman, Dena, Alexander Schwab, Jae-Hoon Kim, Satyendra Kumar, and Ali Dhinojwala. 2000. “Relaxation Dynamics of Rubbed Polystyrene Thin Films”. Europhysics Letters. https://doi.org/10.1209/epl/i2000-00388-9.
Agra-Kooijman, D., A. Schwab, J.-H. Kim, S. Kumar, and A. Dhinojwala. Relaxation Dynamics of Rubbed Polystyrene Thin Films. Europhysics Letters, 1 Sept. 2000, doi:10.1209/epl/i2000-00388-9.