MALDI-TOF characterization of thermally generated gel from Nylon 66 (Articolo in rivista)

Type
Label
  • MALDI-TOF characterization of thermally generated gel from Nylon 66 (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Alternative label
  • C. Puglisi, F Samperi, S. Di Giorgi, G. Montaudo (2002)
    MALDI-TOF characterization of thermally generated gel from Nylon 66
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • C. Puglisi, F Samperi, S. Di Giorgi, G. Montaudo (literal)
Pagina inizio
  • 369 (literal)
Pagina fine
  • 378 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 78 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Titolo
  • MALDI-TOF characterization of thermally generated gel from Nylon 66 (literal)
Abstract
  • Progress in understanding the thermal decomposition processes occurring in Nylon 66 (Ny66) at the processing temperature was obtained by using Matrix Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry (MALDI) techniques. Ny66 samples were subjected to thermal degradation under inert atmosphere heating them at 290°-315°C. The formation of a gel fraction was observed after about 15 min heating and the addition of a condensing agent (TPP) made the gelation process of Ny66 complete in a few minutes. The MALDI mass spectra of the soluble fraction showed that secondary amino groups and cyclopentanone chain ends were generated in the heating process. The gel fraction was partially hydrolysed to destroy the network structure and the soluble material was analysed by MALDI, revealing the formation of azomethyne structures originated from the reaction of cyclopentanone moieties with the terminal amino groups. Comparison with similar experiments conducted on Ny6, showed that only secondary amino groups were formed in Ny6, leading to branched structures but not to crosslinking. (literal)
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