Journal
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
Volume 50, Issue 22, Pages 1556-1561Publisher
WILEY-BLACKWELL
DOI: 10.1002/polb.23152
Keywords
mechanical properties; networks; relaxation; stress; stress relaxation; surface wrinkling; thin films; viscoelastic properties
Categories
Funding
- National Research Council
Ask authors/readers for more resources
We apply thermal wrinkling, which is a surface instability that occurs during thermal annealing of polymer films geometrically confined by a rigid substrate and a flexible superstrate, to study the elasticity and viscosity of chemically crosslinked polymer systems. Specifically, we study the thermal wrinkling of aluminum-capped polyhydroxystyrene films with different extent of chemical crosslinking and find that that the rate of change of the wrinkling wavelength with annealing time and temperature has unique relationships with the elasticity and viscosity of the polymer network. With the aid of analytical expressions that relate the time- and temperature-dependent evolution of the wrinkle wavelength to the elasticity and viscosity, we are able to quantify the elastic modulus and shear viscosity of geometrically confined polymer thin films as a function of the degree of crosslinking. (C) 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2012
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available