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Pseudo‐Hexagonal Crystallinity in Ethene‐Styrene Random Copolymers
Author(s) -
Antinucci Simona,
Guerra Gaetano,
Oliva Leone,
Ruiz de Ballesteros Odda,
Venditto Vincenzo
Publication year - 2001
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/1521-3935(20010201)202:3<382::aid-macp382>3.0.co;2-7
Subject(s) - copolymer , propene , styrene , metallocene , orthorhombic crystal system , materials science , polymer chemistry , crystallinity , crystal structure , catalysis , polymerization , crystallography , chemistry , polymer , organic chemistry , composite material
A comparative X‐ray diffraction study on unoriented and oriented samples of ethene based random copolymers with styrene and propene, obtained by single site metallocene catalysts is presented. For ethene‐styrene copolymers, as usual for ethene copolymers with comonomers bulkier than propene, an orthorhombic crystal phase is generally observed. However, an oriented pseudo‐hexagonal crystalline phase has been obtained in stretched samples, and compared with that one known for ethene‐propene copolymers.