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Epoxy resin curing reaction studied by proton multiple-quantum NMR

AutorMartin-Gallego, Mario ; González-Jiménez, Antonio ; Verdejo, Raquel ; López-Manchado, Miguel A. ; López Valentín, Juan
Palabras clavethermosetting polymer
time domain NMR
Curing of polymers and networks
network structure
curing reaction
Fecha de publicación2015
EditorJohn Wiley & Sons
CitaciónJournal of Polymer Science, Part B: Polymer Physics 53: 1324-1332 (2015)
ResumenThis study demonstrates that the curing reaction of thermosetting polymers, in particular, epoxy resins cured with aliphatic amines, can be characterized by different multiple-quantum (MQ) NMR experiments performed in low-field spectrometers. Measurements of the curing reaction at 40 C, 70 C, and 100 C are carried out to obtain the kinetic parameters like induction time, vitrification time, polymerization rate, and activation energy being consistent with data obtained by other traditional and complementary techniques. Besides, it is demonstrated that <sup>1</sup>H MQ-NMR spectroscopy is a successful approach to overcome the experimental challenge arising from the characterization of high dipolar-coupled polymers to study the network structure and segmental dynamics of thermosetting polymer networks.
Versión del editorhttp://dx.doi.org/10.1002/polb.23767
Identificadoresdoi: 10.1002/polb.23767
issn: 0887-6266
e-issn: 1099-0488
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