International Journal of Adhesion & Adhesives 20 (2000) 387-393 Adhesives

Cyprien Gay*

Laboratoire CNRS -Elf Atochem (UMR 167), 95, roe Danton, B.P.108, 92303 Levallois-Perret cedex. France

Accepted 11 January 2000

Abstract

The adhesion between a solid and a stretched elastic material is known to be reduced as compared to the unstretched situation. We show that computing the elastic deformation by use of the Lagrangian coordinates explains existing experimental results on stretched rubbers for solids with simple geometries, without any need for altering the surface energy. ln other words, we show that for such materials, adhesion at a molecular scale (surface energy) is not atfected by stretching, although adhesion at a macroscopic scale is changed due to the elastic response of the material. @ 2000 Elsevier Science Ltd. AlI rights reserved.

Keywords: Mechanical properties of adhesives; Stress distribution; Tack; Analytical methods