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Issue 20, 2016
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Inertial and stick-slip regimes of unstable adhesive tape peeling

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We present an experimental characterization of the detachment front unstable dynamics observed during the peeling of pressure sensitive adhesives. We use an experimental set-up specifically designed to control the peeling angle θ and the peeled tape length L, while peeling an adhesive tape from a flat substrate at a constant driving velocity V. High-speed imaging allows us to report the evolution of the period and amplitude of the front oscillations, as well as the relative durations of their fast and slow phases, as a function of the control parameters V, L and θ. Our study shows that, as the driving velocity or the peeling angle increases, the oscillations of the peeling front progressively evolve from genuine “stick-slip” oscillations, made of alternating long stick phases and very brief slip phases, to sinusoidal oscillations of amplitude twice the peeling velocity. We propose a model which, taking into account the peeling angle-dependent kinetic energy cost to accelerate and decelerate the peeled tape, explains the transition from the “stick-slip” to the “inertial” regime of the dynamical instability. Using independent direct measurements of the effective fracture energy of the adhesive-substrate joint, we show that our model quantitatively accounts for the two regimes of the unstable dynamics.

Graphical abstract: Inertial and stick-slip regimes of unstable adhesive tape peeling

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Publication details

The article was received on 15 Jan 2016, accepted on 24 Mar 2016 and first published on 06 Apr 2016

Article type: Paper
DOI: 10.1039/C6SM00119J
Citation: Soft Matter, 2016,12, 4537-4548
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    Inertial and stick-slip regimes of unstable adhesive tape peeling

    M. Dalbe, R. Villey, M. Ciccotti, S. Santucci, P. Cortet and L. Vanel, Soft Matter, 2016, 12, 4537
    DOI: 10.1039/C6SM00119J

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