In-situ measurement of the large strain response of the fibrillar debonding region during the steady peeling of pressure sensitive adhesives - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue International Journal of Fracture Année : 2017

In-situ measurement of the large strain response of the fibrillar debonding region during the steady peeling of pressure sensitive adhesives

Résumé

The debonding of pressure sensitive adhesives (PSA) is a classical example of the difficult and unsolved issue of fracture in soft viscoelastic confined materials. The presence of a complex debonding region where the adhesive undergoes cavitation and the very large strain of a spontaneously formed fibrillar network has defied many modeling attempts over the past 70 years. We present here a novel technique to provide an accurate measurement of the local large strain response of the fibrillar debonding region during the steady-state peeling of a well known commercial adhesive over a wide range of peeling velocity and angle. The technique is based on high resolution imaging of the debonding region during peeling and is coupled to a cohesive zone modeling of the adhesive interaction between the flexible tape backing and the rigid substrate. The resulting database provides a strong ground for validating and further developing models (Villey et al. in Soft Matter 11:3480–3491, 2015) aiming to capture the effects of both geometry and non-linear adhesive rheology on the exceptional adherence energy of PSAs.
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Dates et versions

hal-01405061 , version 1 (01-12-2016)

Identifiants

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Richard Villey, Pierre-Philippe Cortet, Costantino Creton, Matteo Ciccotti. In-situ measurement of the large strain response of the fibrillar debonding region during the steady peeling of pressure sensitive adhesives. International Journal of Fracture, 2017, 204 (2), pp.175-190. ⟨10.1007/s10704-016-0171-1⟩. ⟨hal-01405061⟩
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