Relationship between viscoelastic and peeling properties of model adhesives. Part 2. The interfacial fracture domains
Résumé
The viscoelastic and peeling properties of polybutadiene/tackifying resin compatible blends have been studied. The cohesive fracture domain and the interfacial fracture domain are explored. The trumpet model of de Gennes describing the crack shape and propagation is presented. The model defines a single interfacial fracture criterion which coexists with the cohesive fracture criterion, whatever the fracture location. The relevance and physical meaning of such a criterion and a new outlook for the modeling and improvement of adhesive formulations are discussed.