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Structure and morphology of a novel ethylene‐propylene copolymer and its blends with poly(propylene)
Author(s) -
Pegoraro M.,
Severini F.,
Di Landro L.,
Braglia R.,
Kolarik J.
Publication year - 2000
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/1439-2054(20000801)280:1<14::aid-mame14>3.0.co;2-n
Subject(s) - materials science , copolymer , ethylene propylene rubber , morphology (biology) , interphase , chemical engineering , amorphous solid , solubility , phase (matter) , polymer chemistry , ethylene , polymer blend , polypropylene , crystallinity , polymer , composite material , organic chemistry , chemistry , catalysis , biology , engineering , genetics
The structure and morphology of a commercial heterogeneous poly(ethylene‐ co ‐propylene) system (Adflex C202G) and its blends with poly(propylene) (PP) were investigated. Adflex is a complex mixture of copolymers with various C 2 /C 3 ratio. Three components showing different solubility in xylene were separated by fractionation. Physical and chemical analyses of Adflex and of its various fractions suggest that Adflex consists of a semi‐crystalline C 3 ‐rich phase and a less crystalline C 2 ‐rich phase containing spherical particles with an essentially amorphous interphase. In PP‐Adflex blends, interactions between PP molecules and Adflex are evidenced by thermal analysis. Morphological studies of the blends show a spherulitic structure in the fractions containing at least 60% of PP.