The microstructure of aromatic copolyesters prepared by bulk polymerization was investigated by means of 1H NMR spectroscopy. The aromatic region of the spectra appears to be sensitive to the sequence distribution of aromatic rings. Line shape simulation and resolution enhancement of the time domain spectra with a Gaussian window function allow a quantitative evaluation of the relative intensities. Sequence distribution in terms of triads and diads formed by aromatic rings was then derived and compared with the one calculated on the basis of a random distribution. The results show that the distribution, as expected for this class of copolymers, is random.
No takes yet. Share an insight, caveat, or question.
Abis et al. (1992) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: