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Spectroscopic examination of ethylene–propylene–norbornenic diene terpolymers
Author(s) -
Tosi C.,
Ciampelli F.,
Cameli N.
Publication year - 1972
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.1972.070160401
Subject(s) - ethylene propylene rubber , monomer , materials science , diene , degree of unsaturation , epdm rubber , norbornene , ethylene , polymer chemistry , copolymer , composite material , organic chemistry , chemistry , polymer , catalysis , natural rubber
Infrared methods for the analysis of the third monomer in ethylene–propylene–norbornenic diene terpolymers were developed. They are based either on the CC stretching vibration near 6 μ or on the CH out‐of‐plane deformation vibration between 11 and 12 μ. Calibration was made by NMR on selected samples with high unsaturation content. Particular emphasis was laid on terpolymers with ethylidene norbornene, for which the reliability of the analysis for the third monomer was checked by several techniques, and the transferability to the determination of propylene of the calibration curves set up for the analysis of composition in ethylene–propylene copolymers was studied.