High-temperature n.m.r. techniques for studying cross-linked epoxy systems

The network structures formed when the diglycidyl ether of bisphenol A is cured with two stoichiometries of diaminodiphenyl sulfone have been studied by solid-state 13C n.m.r. at temperatures well above the glass transition temperature. High-resolution spectra have been obtained giving detailed info...

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Bibliographic Details
Published in:Polymer (Guilford) 1996, Vol.37 (5), p.721-727
Main Authors: Harris, Robin K., Yeung, Race R., Johncock, Peter, Jones, David A.
Format: Article
Language:English
Subjects:
Applied sciences
carbon-13 nuclear magnetic resonance
diglycidyl ether of bisphenol A
Exact sciences and technology
high temperature
Organic polymers
Physicochemistry of polymers
Properties and characterization
Structure, morphology and analysis
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Summary:The network structures formed when the diglycidyl ether of bisphenol A is cured with two stoichiometries of diaminodiphenyl sulfone have been studied by solid-state 13C n.m.r. at temperatures well above the glass transition temperature. High-resolution spectra have been obtained giving detailed information on the chemistry of these structures. Spectral editing and two-dimensional techniques more usually associated with solution-state n.m.r. have been used to confirm structural elements previously postulated. The value of high- temperature n.m.r. for amorphous and rigid systems such as epoxies is discussed.
ISSN:0032-3861
1873-2291
DOI:10.1016/0032-3861(96)87246-6