Eur. Phys. J. E (2006) 21: 331-339
https://doi.org/10.1140/epje/i2006-10073-5

Regular Article

Debonding dynamics of pressure-sensitive adhesives: 3D block model

¹ CREST, Japan Science and Technology Agency (JST), 7-3-1 Hongo, 113-8656, Bunkyo-ku, Japan
² Department of Applied Physics, The University of Tokyo, Japan

^* e-mail: yamaguchi@rheo.t.u-tokyo.ac.jp

Received: 5 November 2006
Accepted: 4 January 2007
Published online: 13 February 2007

Abstract

We develop a 3-dimensional mechanical model which describes cavity expansions in a viscoelastic solid medium during the debonding phase of the probe-tack test. The stress-strain curves are in good agreement with experiments for the typical pressure-sensitive adhesives. We also show that the separation speed dependence can be explained by viscous dissipations due to large strain rates around the cavities.