Rheology of EPR/PP blends | Zendy

Mighri F. | Zendy; Huneault M. A. | Zendy; Ajji A. | Zendy; Ko G. H. | Zendy; Watanabe F. | Zendy

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Rheology of EPR/PP blends

Author(s) -

Mighri F.,

Huneault M. A.,

Ajji A.,

Ko G. H.,

Watanabe F.

Publication year - 2001

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.2057

Subject(s) - electron paramagnetic resonance , rheology , materials science , ethylene propylene rubber , polypropylene , copolymer , polymer chemistry , viscosity , shear rate , arrhenius equation , chemistry , polymer , composite material , nuclear magnetic resonance , activation energy , physics

The rheological behavior of polypropylene, PP, ethylene‐propylene copolymer, EPR, and EPR/PP blends was studied. Zero‐shear viscosity and elastic relaxation time were determined by least‐squares fits by using a Carreau–Yasuda model with Arrhenius temperature dependency. The effect of PP and EPR molecular weight, ethylene ratio in EPR copolymer (E/EPR), and EPR concentration on the zero‐shear viscosity and elasticity of EPR/PP blends was determined experimentally. Molecular weight effects are compared to theoretically expected relationships. EPR concentration effect and E/EPR ratio effects agree well with predictions made by using the Tsenoglou model. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 2113–2127, 2001

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