A new class of Poy(Ester-Hydrazide) Copolymers with liquid Crystalline Propeties: Synthesis and Characterization (Articolo in rivista)

Type
Label
  • A new class of Poy(Ester-Hydrazide) Copolymers with liquid Crystalline Propeties: Synthesis and Characterization (Articolo in rivista) (literal)
Anno
  • 2001-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1295/polymj.33.575 (literal)
Alternative label
  • D. Capitani, N. De Prisco, P. Laurienzo, M. Malinconico, N. Proietti, A. Roviello (2001)
    A new class of Poy(Ester-Hydrazide) Copolymers with liquid Crystalline Propeties: Synthesis and Characterization
    in Polymer journal
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • D. Capitani, N. De Prisco, P. Laurienzo, M. Malinconico, N. Proietti, A. Roviello (literal)
Pagina inizio
  • 575 (literal)
Pagina fine
  • 583 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://dx.doi.org/10.1295/polymj.33.575 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 33 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 8 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto di Metodologie Chimiche Istituto di Chimica e Tecnologia dei Polimeri Dipartimento di Chimica, Università di napoli Federico II (literal)
Titolo
  • A new class of Poy(Ester-Hydrazide) Copolymers with liquid Crystalline Propeties: Synthesis and Characterization (literal)
Abstract
  • A series of copolyesters (PE) of low molecular weight containing propyloxy-substituted aromatic ring and/or ethylenic sequences between aromatic units were prepared by melt polycondensation between corresponding diacids and diacetates, and used as precursor of poly(ester-co-polyhydrazide) (PEH) new copolymers. The PEs showed to have thermotropic properties, with transition temperatures which depend on the chemical composition and with a good interval of stability of the mesophase. The corresponding PEHs were obtained by high-temperature polycondensation of carboxyl-terminated PEs with terephthalic dihydrazide. The PEHs showed as well a stable mesophase in the melt. and improved thermal stability respect to polyesters. All the polymers were characterized by elemental analysis, inherent viscosity, infrared and C-13 solid state NMR spectroscopy, thermal and thermogravimetric analysis and optical microscopy. Fibers of PEHs were obtained by melt-spinning and characterized by WAXS analysis (literal)
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