Synthesis of cis- and trans-polyisoprene adduct with nitrogen dioxide (NO2/N2O4 mixture) and a study of the thermal stability of the adduct (Articolo in rivista)

Type
Label
  • Synthesis of cis- and trans-polyisoprene adduct with nitrogen dioxide (NO2/N2O4 mixture) and a study of the thermal stability of the adduct (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.polymdegradstab.2012.04.009 (literal)
Alternative label
  • F. Cataldo, O. Ursini , C. Cherubini, S. Rocchi (2012)
    Synthesis of cis- and trans-polyisoprene adduct with nitrogen dioxide (NO2/N2O4 mixture) and a study of the thermal stability of the adduct
    in Polymer degradation and stability
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • F. Cataldo, O. Ursini , C. Cherubini, S. Rocchi (literal)
Pagina inizio
  • 1090 (literal)
Pagina fine
  • 1100 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 97 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Università Tor Vergata, Department of Chemistry, Via della Ricerca Scientifica, Rome, Italy Lupi Chemical Research Institute, Via Casilina 1626/A, 00133 Rome, Italy Institute of Chemical Methodologies, CNR, Via Salaria Km. 29,300, 00016 Monterotondo, Stazione, Rome, Italy. (literal)
Titolo
  • Synthesis of cis- and trans-polyisoprene adduct with nitrogen dioxide (NO2/N2O4 mixture) and a study of the thermal stability of the adduct (literal)
Abstract
  • Tetrahydrofuran solutions of cis- or trans-polyisoprene react rapidly with a NO2/N2O4 mixture without crosslinking and gelation of the solution (as happens in other solvents) and with formation of a dinitro adduct (nitro-cis-PIP and nitro-trans-PIP) as the main product. The chemical structure of the adduct was analyzed by FT-IR and UV spectroscopy revealing that species other than the nitro (-NO2) groups are also present in the adduct, like for instance the nitrate group (eONO2). The thermal stability of the adduct was studied by the thermogravimetric analysis (TGA-DTG) combined with differential thermal analysis (DTA). The initial decomposition of the adduct is exothermic and the release of heat reaches its maximum at about 200 °C and the completion of the exothermic decomposition occurs at about 325 °C. The amount of nitro groups present in the adduct was determined by the TGA-DTG. The decomposition of the adduct was also followed by the TGA-FTIR analytical technique and a certain number of volatile and gaseous species were detected ranging from mixtures of nitrogen oxides and nitroalkanes to NH3, HCN and CH4. The adduct nitro-cis-PIP and nitro-trans-PIP yield a carbon foam even at 400 °C which can be defined as a crosslinked vitreous carbon foam which was studied by FT-IR spectroscopy (literal)
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