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Microprobing of Interfacial Behavior of Solid Polymers by Means of Normal Mechanical Contacts

Published online by Cambridge University Press:  17 March 2011

Y. S. Garif ,
W. W. Gerberich ,
C. W. Macosko  and
A. Pocius
Y. S. Garif
Affiliation:
Dept. of Chemical Engineering and Materials Science, University of Minnesota Minneapolis, MN 55455, U.S.A.
W. W. Gerberich
Affiliation:
Dept. of Chemical Engineering and Materials Science, University of Minnesota Minneapolis, MN 55455, U.S.A.
C. W. Macosko
Affiliation:
Dept. of Chemical Engineering and Materials Science, University of Minnesota Minneapolis, MN 55455, U.S.A.
A. Pocius
Affiliation:
3M Company, Adhesive Technologies Center St. Paul, MN 55144, U.S.A.
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Abstract

Adhesion properties of acrylic pressure sensitive adhesives were examined by means of normal (JKR) contact at room temperature. Cylindrically shaped samples were synthesized in capillary tubes in presence of a cross-linking agent in order to obtain an elastic response. The results reveal power law increase of adhesion at higher rates of interfacial separation. Transition from low- to high-power is revealed and explained as a result of bulk shielding of interfacial fracture mechanism. Further results will be available soon. Bulk viscoelastic dissipation and molecular interactions at the interface are thought to jointly govern this behavior.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 710: Symposia DD – Polymer Interfaces and Thin Films , 2001 , DD7.5.1
Copyright
Copyright © Materials Research Society 2002

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References

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