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Modelisation de la reaction chimique de durcissement d'un systeme epoxy
Author(s) -
Ancelle J.,
Attias A. J.,
Bloch B.,
Lauprêctre F.,
Monnerie L.
Publication year - 1987
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19870090114
Subject(s) - epoxy , chemistry , chemical shift , molecule , chemical structure , reactivity (psychology) , solid state , matrix (chemical analysis) , nuclear magnetic resonance spectroscopy , polymer chemistry , organic chemistry , chromatography , medicine , alternative medicine , pathology
Chemical, as well as spectroscopical methods, were used to try to describe, as quantitatively as possible, the different kinds of chemical bonds constituting the network of a cured epoxy matrix, the tgmda/ DDS system. The chemical approach consisted, on the one hand, in synthesizing model compounds; on the other hand, model reactions from diepoxy and amino compounds were followed by chemical, chromatographical and spectroscopical analysis, in order to correlate structure of the products with reactivity of the starting molecules. Spectroscopical method, which was found most useful for this resin system, is solid state 13 C CP/MAS NMR spectroscopy. As the spectra were not directly interpretable, because consisting largely of broad, bad‐resolved peaks, the aliphatic carbon region was decomposed into elementary lines. Structural assignments of the latter were made by using the solution state 13 C NMR data of model compounds. On account of the anticipated mechanisms, 85 % of the aliphatic carbons could be identified and quantified.