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Solid‐state 13 C‐NMR investigations of crosslinked structure modifications in elastomers during heating treatment
Author(s) -
Buzaré JeanYves,
Silly G.,
Emery J.,
Boccaccio Guy,
Rouault Eric
Publication year - 2002
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.11656
Subject(s) - vulcanization , elastomer , natural rubber , materials science , sulfur , carbon 13 nmr , polymer chemistry , proton nmr , chemical structure , chemical engineering , chemistry , composite material , organic chemistry , engineering , metallurgy
Abstract The chemical modifications occurring during the thermal degradation of sulfur‐cured natural rubber were investigated with 13 C‐NMR. Samples of vulcanized rubbers were heat‐aged at 70°C under an air (oxidative) environment for 3, 7, and 21 days. Changes were analyzed by the measurement of the variations of the concentrations of different C–S x –C crosslinked structures during the thermooxidative process through the intensity of the related NMR lines in the 10–70‐ppm range. © 2002 Wiley Periodicals, Inc. J Appl Polm Sci 87:3–8, 2003