Details

Autor(en) / Beteiligte

• Sivasubramanian, G.
• Sivasamy, P.
• Vijayakumar, C.T.
• Fink, J.K.

Titel

Pyrolysis mass spectrometry of hexolic based polyesters

Ist Teil von

• Thermochimica acta, 1986-09, Vol.105, p.19-33

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

1986

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals

Beschreibungen/Notizen

• Polyesters based on hexolic anhydride, hexolic-ethylene glycol (H-EG) and hexolic-1,4-butanediol (H-BD), have been synthesized for the first time by melt condensation in vacuum. Pyrolysis mass spectrometric studies have been done on these two polyesters at 300° C. From the mass spectral data, a plausible mechanism of degradation is proposed. To explain the different fragment ions formed during pyroly sis-electron impact, β-scissions in esters, acyl-oxygen and alkyl-oxygen bond homolysis, carbon-carbon bond scissions in the alkyl part of the glycol unit, pericyclic type reaction, McLafferty type rearrangement, retro Diels-Alder reaction, etc., have been invoked. In both the polyesters HCl is found to be one of the major products of pyrolysis. Further, the present study provides clues for the presence of ether linkages in the H-EG polyester.