The reactions taking place during melt mixing of polyarylate (a copolyester of bisphenol A and an equimolar mixture of isophthalic and terephthalic acids) with poly(butylene terephthalate) (PBT) were studied by 1H and 13C nuclear magnetic resonance (n.m.r.). Model compounds whose structures match those of the polymers and possible interchange units were synthesized and characterized by 1H and 13C n.m.r. By means of this characterization, assignments of the absorptions appearing in the spectra of the soluble fraction were possible.
Посилання на статтю:
Transesterification reactions between a polyarylate and poly (1,4-butylene terephthalate): identification of interchange units via model compounds / Eli Espinosa, Maria J. Fernandez-Berridi, Ifiaki Maiza and Miguel Valero // Polymer. – 1993. – Vol 34. – P. 382-388.