Title

Compatibilization of PP/EPDM blends via a hexafunctional coupling agent and peroxide during reactive extrusion

Document Type

Article

Publication Date

4-1-2002

Department

Polymers and High Performance Materials

Abstract

Isotactic polypropylene (PP) and ethylene-propylene-methylene-norbornene terpolymer (EPDM) were blended in a counter-rotating twin screw extruder in the presence of a peroxide initiator and a new multifunctional coupling agent (hexa(allylamino)cyclotriphosphonitrile (HAP)). The effects of free radical coupling reactions on the mechanical properties and morphologies of the resultant blends were evaluated. Blends that included both HAP and peroxide displayed an increase in low temperature impact strength. Tapping-mode atomic force microscopy (AFM) of the alloys revealed enhanced dispersion of EPDM within the PP matrix when compared to the base blends.

Publication Title

JOURNAL OF ELASTOMERS AND PLASTICS

Volume

34

Issue

2

First Page

171

Last Page

183

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