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Effect of Feeding Strategy on the Properties of PP/Recycled EPDM Blends

  • P. Mahallati and D. Rodrigue
Published/Copyright: May 5, 2015
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Abstract

In this work, thermoplastic elastomers (TPE) were produced based on polypropylene (PP) and recycled ethylene-propylene-diene monomer (r-EPDM) through twin-screw extrusion followed by injection molding. In particular, the effect of different feeding strategies (component introduction order and position along the screw) and r-EPDM content (0, 20, 35, 50 and 65% wt.) were studied. From the materials produced, morphological and mechanical characterizations were carried out. The results show that feeding strategy has a substantial influence on dispersion and compatibility between PP and r-EPDM. The main result is that r-EPDM can significantly increase PP impact strength (495%) with optimized processing conditions.


* Mail address: Denis Rodrigue, Department of Chemical Engineering, Université Laval, Quebec, QC, Canada, G1V 0A6, E-mail:

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Received: 2014-08-28
Accepted: 2014-12-30
Published Online: 2015-05-05
Published in Print: 2015-05-29

© 2015, Carl Hanser Verlag, Munich

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