Pressure sensitive adhesive fibrillation

Lakrout, H., Sergot, P. Creton, C. (1999). Direct Observation of Cavitation and Fibrillation in a Probe Tack Experiment on Model Acrylic Pressure-Sensitive-Adhesives. Journal of Adhesion, Vol. 69, pp. 307-359, ISSN 0021-8464... 

Zosel, A. (1997). The Effect of Bond Formation on the Tack of Polymers. Journal of Adhesion Science and Technology, Vol. 11, No. 11, pp. 1447-1457, ISSN 0169-4243 Zosel, A. (1998). The Effect of Fibrilation on the Tack of Pressure Sensitive Adhesives. International Journal of Adhesion Adhesives, Vol. 18, pp. 265-271, ISSN 0143-7496... 

Zosel A (1998) Effect of fibrillation on the tack of pressure sensitive adhesives. Int J Adhes Adhes 18(Compendex) 265... 

We may now make some quantitative estimates, using plausible numbers for the physical and mechanical properties that are involved. For a fibril drawn from the adhesive of a pressure-sensitive tape, we may assume an order of magnitude for rf, of about 0.01 mm, and ryy -5 rf, i.e. about 0.05 mm. We assume the substrate to be hard, strong and smooth, and that "physical" forces act across the interface, so that AG will be of the order of 100 ergs/cm = 0.10 j/m. The shear strength of the polymer, for a practical rate of elongation, may be about 1.0 X 10 N/m ( ) or about 140 psi. Then 0.004. 

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