Crystallization from the amorphous form of the nanoporous epsilon form of syndiotactic polystyrene (Articolo in rivista)

Type
Label
  • Crystallization from the amorphous form of the nanoporous epsilon form of syndiotactic polystyrene (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.polymer.2010.07.043 (literal)
Alternative label
  • C. Daniel, T. Montefusco, P. Rizzo, P. Musto (2010)
    Crystallization from the amorphous form of the nanoporous epsilon form of syndiotactic polystyrene
    in Polymer (Guildford)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • C. Daniel, T. Montefusco, P. Rizzo, P. Musto (literal)
Pagina inizio
  • 4599 (literal)
Pagina fine
  • 4605 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 51 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. Dipartimento di Chimica and INSTM Reasearch Unit, Università degli Studi di Salerno Via Ponte Don Melillo, 84084 Fisciano (SA), Italy 2. Institute of Chemistry and Technology of Polymers (ICTP), National Research Council of Italy, Via Campi Flegrei, 34, Olivetti Building, 80078 Pozzuoli (Napoli), Italy. (literal)
Titolo
  • Crystallization from the amorphous form of the nanoporous epsilon form of syndiotactic polystyrene (literal)
Abstract
  • The recently discovered channel-shaped nanoporous epsilon crystalline phase of syndiotactic polystyrene (s-PS) is generally obtained by a chloroform-induced recrystallization of samples exhibiting the helical gamma crystalline phase, followed by chloroform desorption in suitable conditions. This nanoporous e crystalline phase can be also obtained by crystallization of amorphous samples as induced by the same chloroform sorption-desorption procedure. This procedure, which does not affect b form samples, when applied to samples exhibiting the trans-planar a phase instead leads to a recrystallization into the cavity-shaped nanoporous d phase. Both nanoporous crystalline phases (d and e) are obtained, by this chloroform treatment on uniaxially stretched amorphous films. In particular, polarized FTIR microscopy clearly shows that d and e crystalline phases prevail in central and lateral film regions, respectively. In fact, in the film central regions, higher polymer draw ratios are reached that lead to higher degrees of trans-planar crystallinity, whose chloroform induced crystallization leads to d phase formation. (literal)
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