Abstract
Abstract Recently we have developed a contact theory of adhesion published under the title “Interfacial Contact and Bonding in Autohesion”.1 The theory was formed for the case of polymers in a highly viscous state, where it is hard to bring them together for bonding. For low viscosity materials coalescence occurs very rapidly and contact is not a problem. However, most cases of adhesion that give us problems belong to the former case where establishment of contact between the two surfaces is the primary requirement. The rate of contact formation is controlled by the shape of the surfaces in contact, the viscous or viscoelastic properties of the material comprising them and the contact pressure. This is handled by extending Hertz' contact theory2 by applying Alfrey's and Gurnee's elastic-viscous-viscoelastic analogy. Where-ever contact is established the interfacial bond strength may be obtained from molecular primary or secondary bond forces. This was obtained by using Good's4 6–12 Lennard-Jones potential...
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