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Influence of the type and the comonomer contents on the mechanical behavior of ethylene/α‐olefin copolymers
Author(s) -
Simanke A. G.,
Galland G. B.,
Baumhardt Neto R.,
Quijada R.,
Mauler R. S.
Publication year - 1999
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(19991031)74:5<1194::aid-app16>3.0.co;2-j
Subject(s) - comonomer , crystallinity , copolymer , materials science , polymer chemistry , ethylene , olefin fiber , post metallocene catalyst , metallocene , chemical engineering , composite material , catalysis , chemistry , polymer , organic chemistry , polymerization , engineering
The influences of the type and concentration of α‐olefin (1‐hexene, 1‐octene, 1‐decene, 1‐octadecene, 4‐methyl‐1‐pentene) on the mechanical behavior and crystallinity degree of some ethylene/α‐olefin copolymers obtained by metallocene catalysts were studied by means of stress/strain experiments. The crystallinity degree of these copolymers has been determined by X‐ray measurements. It has been observed that the copolymers show less resistance to strain as the comonomer content increases and the crystallinity decreases. Most of the studied copolymers exhibit a significant increase in the crystallinity level after the stress/strain experiments. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 1194–1200, 1999