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Rheological and morphological properties of high-density polyethylene and poly(ethylene–octene) blends

✍ Scribed by Maria José O. C. Guimarães; Fernanda M. B. Coutinho; Marisa C. G. Rocha; Marcelo Farah; Rosário E. S. Bretas

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
442 KB
Volume
86
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

The rheological and morphological properties of blends based on high‐density polyethylene (HDPE) and a commercial ethylene–octene copolymer (EOC) produced by metallocene technology were investigated. The rheological properties were evaluated in steady and dynamic shear experiments at 190°C in shear rates ranging from 90 s^−1^ to 1500 s^−1^ and frequency range between 10^−1^ rad/s and 10^2^ rad/s, respectively. These blends presented a high level of homogeneity in the molten state and rheological behavior was generally intermediate to those of the pure components. Scanning electron microscopy (SEM) showed that the blends exhibit dispersed morphologies with EOC domains distributed homogeneously and with particle size inferior to 2 μm. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 2240–2246, 2002

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