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Thermal decomposition mechanisms of sequential bipolyesters based on propeneglycol and hydroxybenzoic/phthalic diacid derivatives

1986; Wiley; Volume: 24; Issue: 7 Linguagem: Inglês

10.1002/pola.1986.080240722

1099-0518

Mario Giuffrida, Pietro Maravigna, Giorgio Montaudo, Emo Chiellini,

Polymer Nanocomposites and Properties

Abstract Some bipolyesters consisting of 1,2‐propene glycol residue (P) and symmetric aromatic diacid residue constituted by two p ‐oxybenzoyl groups coupled by a terephthaloyl (HTH), phthaloyl (HOH) and isophthaloyl (HIH) group, and a nonsymmetric diacid residue constituted by a p ‐oxybenzoyl and a terephthaloyl group (HT), have been investigated by direct pyrolysis–mass spectrometry. The results show that intramolecular exchange reactions occurring at the pyrolysis stage cause a reorganization of the copolymer sequences. Sequential bipolyesters I–IV are ideal materials for the investigation of the extent of thermal reorganization induced in the bipolymer sequences by the pyrolytic process.