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Elastic and viscoelastic behavior of ethylene–propylene copolymers
Author(s) -
De Candia F.,
Vittoria V.
Publication year - 1973
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.1973.070171101
Subject(s) - vulcanization , viscoelasticity , materials science , copolymer , ethylene propylene rubber , polymer , polymer science , polymer chemistry , natural rubber , ethylene , thermodynamics , composite material , chemistry , organic chemistry , catalysis , physics
The viscoelastic behavior of an ethylene–propylene copolymer is analyzed. Two different vulcanization procedures were followed; in the first a binary mixture of initiator‐polymer was used, while in the second the polymer was diluted by a solvent. The networks thus obtained show a different viscoelastic behavior depending on the different vulcanization procedure used. Results, analyzed in terms of supramolecular organization being present in the amorphous material, give some important information about the molecular nature of the C 2 coefficient of the Mooney‐Rivlin equation, and therefore about the well‐known deviations from the Gaussian theory shown by all rubber‐like networks.