Thermal Decomposition Processes in Polycarbonates (Articolo in rivista)

Type
Label
  • Thermal Decomposition Processes in Polycarbonates (Articolo in rivista) (literal)
Anno
  • 1989-01-01T00:00:00+01:00 (literal)
Alternative label
  • Giorgio Montaudo, Concetto Puglisi, Filippo Samperi (1989)
    Thermal Decomposition Processes in Polycarbonates
    in Polymer degradation and stability; Elsevier, Oxford (Regno Unito)
    (literal)
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  • Giorgio Montaudo, Concetto Puglisi, Filippo Samperi (literal)
Pagina inizio
  • 285 (literal)
Pagina fine
  • 304 (literal)
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  • 26 (literal)
Rivista
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  • 20 (literal)
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  • Università Catania, CNR (literal)
Titolo
  • Thermal Decomposition Processes in Polycarbonates (literal)
Abstract
  • The thermal decomposition mechanisms of some polycarbonates have been investigated by direct pyrolysis mass spectrometry. The results indicate that aliphatic polycarbonates decompose by intramolecular exchange processes which produce cyclic compounds as primary pyrolysis products. Aliphatic-aromatic polycarbonates yield cyclic compunds conteining various ratios of bisphenol A (BPA) and aliphatic carbonates. Poly(Ethylene-co-BPA carbonate) decomposes to produce ethylene carbonate and BPA polycarbonate. The latter further decomposes at higher temeperature ti yield cyclic oligomers. Alt-copoly(resorcinol-co.BPA carbonate) undergoes ester-exchange rearangement to produce cyclic resorcinol carbonate oligomers and BPA polycarbonate. (literal)
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