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Ageing of EPDM elastomers exposed to γ-radiation studied by 1H broadband and 13C high-resolution solid-state NMR

✍ Scribed by P. Palmas; R. Colsenet; L. Lemarié; M. Sebban

Book ID: 104163851
Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 260 KB
Volume: 44
Category: Article
ISSN: 0032-3861
DOI: 10.1016/s0032-3861(03)00476-2

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✦ Synopsis

Ageing of EPDM synthetic elastomers exposed to g-irradiation has been investigated using solid-state NMR Spectroscopy. Both 13 C highresolution and 1 H wideline measurements were carried out to evaluate chemical degradation including oxidation products formation, chain scission and crosslinking phenomena. Highly specific structures were tentatively proposed as a result of careful examination of 13 C chemical shifts. The importance of diene monomer, the stabilising effect of curing process and the addition of antioxidants were evaluated on the basis of several polymer compositions.

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