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Compatibility of binary blends of polypropylene with ethylene‐α‐olefin copolymer
Author(s) -
Yamaguchi Masayuki,
Miyata Hiroshi,
Nitta KohHei
Publication year - 1996
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/(sici)1097-4628(19961003)62:1<87::aid-app12>3.0.co;2-5
Subject(s) - copolymer , ethylene , olefin fiber , materials science , polypropylene , tacticity , differential scanning calorimetry , polymer chemistry , ethylene propylene rubber , hexene , chemical engineering , polymer , composite material , organic chemistry , polymerization , chemistry , catalysis , thermodynamics , physics , engineering
The compatibility for binary blends of isotactic polypropylene with rubbery ethylene‐α‐olefin copolymers having various α‐olefin contents was investigated by means of differential scanning calorimetry, X‐ray analysis, transmission electron microscopy, and dynamic mechanical analysis. It was found that “α‐olefin rich” in ethylene‐1‐butene copolymers and in ethylene‐1‐hexene copolymers were miscible with amorphous polypropylene chains, when the α‐olefin content is above 50 mol %. On the other hand, the blends with “ethylene rich” (above 50 mol % of the ethylene content) in ethylene‐1‐butene copolymers and ethylene‐1‐hexene copolymers showed a microheterogeneous morphology. © 1996 John Wiley & Sons, Inc.