TWO-LAYER MODEL DESCRIPTION OF POLYMER THIN FILM DYNAMICS

Dong-dong Peng; Ran-xing Nancy Li; Chi-hang Lam; Ophelia K.C. Tsui

doi:10.1007/s10118-013-1207-x

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TWO-LAYER MODEL DESCRIPTION OF POLYMER THIN FILM DYNAMICS

Special Issue: The 10th International Symposium on Polymer Physics (2012) | Updated：2023-01-03

- TWO-LAYER MODEL DESCRIPTION OF POLYMER THIN FILM DYNAMICS
- Chinese Journal of Polymer Science Vol. 31, Issue 1, Pages: 12-20(2013)
- Affiliations：
  
  a.Department of Physics, Boston University, Boston, MA 02215, U.S.A.
  b.Department of Applied Physics, Hong Kong Polytechnic University, Hong Kong, China
- Author bio：
  
  **Ophelia K.C. Tsui, E-mail: okctsui@bu.edu
- Funds：
- DOI：10.1007/s10118-013-1207-x
  CLC：
- Received：11 July 2012，
  
  Revised：2012-08-24，
  
  Accepted：28 August 2012，
  
  Published：2013-01
- Accepted：
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Dong-dong Peng, Ran-xing Nancy Li, Chi-hang Lam, et al. TWO-LAYER MODEL DESCRIPTION OF POLYMER THIN FILM DYNAMICS[J]. Chinese Journal of Polymer Science, 2013, 31(1): 12-20.
DOI：

Dong-dong Peng, Ran-xing Nancy Li, Chi-hang Lam, et al. TWO-LAYER MODEL DESCRIPTION OF POLYMER THIN FILM DYNAMICS[J]. Chinese Journal of Polymer Science, 2013, 31(1): 12-20. DOI： 10.1007/s10118-013-1207-x.

摘要

Abstract

Experiments in the past two decades have shown that the glass transition temperature of polymer films can become noticeably different from that of the bulk when the film thickness is decreased below

. 100 nm. It is broadly believed that these observations are caused by a nanometer interfacial layer with dynamics faster or slower than that of the bulk. In this paper

we examine how this idea may be realized by using a two-layer model assuming a hydrodynamic coupling between the interfacial layer and the remaining

bulk-like layer in the film. Illustrative examples will be given showing how the two-layer model is applied to the viscosity measurements of polystyrene and polymethylmethacrylate films supported by silicon oxide

where divergent thickness dependences are observed.

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