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Spectroscopic examination of ethylene–propylene–norbornenic diene terpolymers

✍ Scribed by C. Tosi; F. Ciampelli; N. Cameli

Publisher
John Wiley and Sons
Year
1972
Tongue
English
Weight
533 KB
Volume
16
Category
Article
ISSN
0021-8995

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✦ Synopsis

Infrared methods for the analysis of the third monomer in ethylene-propylene-norbornenic diene terpolymers were developed. They are based either on the C=C stretching vibration near 6 p or on the =CHout-of-plane deformation vibration between 11 and 12 p . 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.

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## Abstract In this study, ethylene–propylene–diene terpolymer residues (EPDM‐r) from the automotive industry were analyzed by thermogravimetric analysis (TGA) for determination of the activation energy (__E__~a~) of decomposition by the Flynn‐Wall‐Ozawa (FWO) method. The degradation mechanism was