Journal of Applied Polymer Science, Vol.70, No.4, 675-687, 1998
Identification and determination of the glyceride and tris(2-hydroxyethyl)isocyanurate structures in the average macromolecule of a polyester with carbon-13-NMR spectroscopy : Analysis of the polyester average structure
The C-13-NMR approach to quantitative analysis of a polyester resin synthesized from dimethylterephthalate, ethylene glycol, tris-(2-hydroxyethyl)isocyanurate (THEIC), and glycerol is presented. Various glyceride and isocyanurate structures formed during the esterification have been identified and analyzed, at first in simple model systems and then in the structure of the resin. The contents of particular structural units were determined as well as a hypothetical average macromolecule of the resin defined. The assignments of C-13-NMR signals were made and correlated with the H-1 shifts using a 2D-HETCOR experiment.