Issue 23, 2009
From the journal:

Soft Matter

Viscoelastic properties of confined polymer films measured via thermal wrinkling†

Edwin P. Chan,a   Kirt A. Page,a   Se Hyuk Im,b   Derek L. Patton,‡a   Rui Huangb  and  Christopher M. Stafford*a  

* Corresponding authors

a Polymers Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899, USA
E-mail: chris.stafford@nist.gov
Fax: +1 301 975 4924
Tel: +1 301 975 4368

b Department of Aerospace Engineering and Engineering Mechanics, University of Texas, Austin, TX 78712, USA
E-mail: ruihuang@mail.utexas.edu
Fax: +1 512 471 5500
Tel: +1 512 471 7558

Abstract

We present a new wrinkling-based measurement technique for quantifying the viscoelastic properties of confined polymer thin films. This approach utilizes real-time laser-light scattering to observe the kinetics of thermally-induced surface wrinkling, which evolves isothermally as a function of annealing time. Specifically, wrinkling is induced by applying a thermal stress to a polystyrene film that is sandwiched between a silicon substrate and an aluminium thin film superstrate. By following the time evolution of the wrinkle wavelength and amplitude, we can infer the rubbery modulus and shear viscosity of the polystyrene film with the aid of a theoretical model.

Graphical abstract: Viscoelastic properties of confined polymer films measured via thermal wrinkling

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Article information

DOI
https://doi.org/10.1039/B916207K
Article type
Communication
Submitted
06 Aug 2009
Accepted
23 Sep 2009
First published
08 Oct 2009

Soft Matter, 2009,5, 4638-4641

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Viscoelastic properties of confined polymer films measured via thermal wrinkling

E. P. Chan, K. A. Page, S. H. Im, D. L. Patton, R. Huang and C. M. Stafford, Soft Matter, 2009, 5, 4638 DOI: 10.1039/B916207K

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