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Polyarylamide/Polypropylene Blends

Relations Between Rheology, Morphology and Injection Molding
  • A. Haddout , J. Villoutreix und G. Villoutreix
Veröffentlicht/Copyright: 28. Mai 2013
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Abstract

This work deals with the experimental study of the rheological behaviour, the growth and evolution of the morphology of two components polyarylamide/polypropylene blends during injection molding. In the case of compatibilized blends, the viscosity shows two main results depending on shear rate. For low shear rates, up to 103 s−1, we notice a positive deviation in comparison with the additivity low, whereas a negative deviation is observed for high shear rates including injection molding conditions. The analysis of the morphology of the blend by scanning electronic microscopy shows a dispersed phase with nodules. The injection flow rate acts on the shape of the nodules and also on their repartition as obtained from a rectangular molded plate. The thermomechanical analysis of pure composition samples (100 % PA) and of a compatibilized mixture PA (70 %)/PP (30 %) has been studied.


* Mail address: A. Haddout, Laboratoire de Mise en Oeuvre des Matières Plastiques, CNAM, 292 rue Saint Martin 75141, Paris Cedex 03, France.

Received: 1993-10-25
Accepted: 1994-8-9
Published Online: 2013-05-28
Published in Print: 1995-03-01

© 1995, Carl Hanser Verlag, Munich

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