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Article Dans Une Revue Macromolecular Symposia Année : 2002

Shear-induced crystallization of polypropylene. Growth enhancement and rheology in the crystallization range

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Résumé

Crystallization under shear of many different polypropylenes has been studied using a fiber pull-out device. It appears that growth can be considerably enhanced by flow. The best correlation is obtained with weight average molecular weight. Modeling the flow pattern gives access to the mechanical parameters at the growth front (shear rate and shear stress) as well as to the total strain applied to the polymer. The residual strain can be calculated taking into account relaxation processes.

Dates et versions

hal-00536013 , version 1 (15-11-2010)

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Jean-Marc Haudin, Catherine Duplay, Bernard Monasse, Jean-Louis Costa. Shear-induced crystallization of polypropylene. Growth enhancement and rheology in the crystallization range. Macromolecular Symposia, 2002, 185 (Special Issue: Flow-Induced Crystallization of Polymers), pp.Pages 119-133. ⟨10.1002/1521-3900(200208)185:1<119::AID-MASY119>3.0.CO;2-K⟩. ⟨hal-00536013⟩
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