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Dans cette Note, nous nous sommes focalisés sur le défaut de peau de requin, que l'on rencontre fréquemment lors de l'extrusion de polymères linéaires. Notre objectif est de relier l'apparition du défaut de peau de requin aux propriétés rhéologiques du polymère et plus particulièrement à la forme de la distribution des masses molaires. Ainsi, en nous appuyant sur le modèle de Brochard–de Gennes, nous...
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