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Preparation and characterization of blends of high density polyethylene and poly(ethylene‐ co ‐1‐octene) elastomer
Author(s) -
Guimarães Maria José O. C.,
Coutinho Fernanda M. B.,
Rocha Marisa C. G.,
Garcia Maria Elizabeth 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.1630
Subject(s) - materials science , octene , polyethylene , elastomer , thermoplastic elastomer , composite material , elongation , volume fraction , low density polyethylene , 1 octene , polymer blend , ethylene , linear low density polyethylene , polymer chemistry , polymer , copolymer , ultimate tensile strength , chemistry , organic chemistry , catalysis
Mechanical, thermal, and morphological properties of blends of high density polyethylene and poly(ethylene‐ co ‐1‐octene) (PEO) were evaluated. The blends were prepared in a single screw extruder at 230°C and 50 rpm with volume fraction of elastomer varying in the range from 0.05 to 0.8. Factors such as chemical similarity and melt viscosity favor the interdiffusion process of phases, resulting in better interfacial adhesion. A synergistic effect on the strength at break and elongation at break for a particular range of blend composition was observed. Blends with a volume fraction of PEO higher than 5% presented a super tough behavior at room temperature. Thermal analysis showed that there is a certain degree of interaction between high density polyethylene and PEO. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 1991–1995, 2001