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  • Electronic Resource  (2)
  • dielectric relaxation in PET and ethylene isophthalate terephthalate copolyester  (1)
  • poly(ethylene-2,6-naphthalate)  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Study of the dielectric β-relaxation in poly(ethylene terephthalate) and ethylene isophthalate terephthalate copolyesters (1992)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 30 (1992), S. 701-706 
    Details
    ISSN: 0887-6266
    Keywords: dielectric relaxation in PET and ethylene isophthalate terephthalate copolyester ; copolymers, ethylene isophthalate terephthalte, dielectric relaxation in ; poly(ethylene terphthalate) and related copolyesters, dielectric relaxation in ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The dielectric β-relaxation in poly(ethylene terephthalate) and ethylene isophthalate terephthalate copolyesters with various ethylene isophthalate contents was investigated over a wide range of frequencies. Isothermal spectra and normalized plots show that the dielectric β-relaxation is characterized by the molecular structure between the aromatic rings. The equilibrium polarizability of the motional segment, which was estimated from the dielectric increment obtained by the best fit of the Havriliak-Negami equation to the Cole-Cole plot, indicates that torsional vibrations of the main chain are correlated over a length corresponding to one monomer.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/polb.1992.090300707
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    FTIR spectroscopic study on crystallization process of poly(ethylene-2,6-naphthalate) (1997)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 35 (1997), S. 2741-2747 
    Details
    ISSN: 0887-6266
    Keywords: FTIR spectroscopy ; poly(ethylene-2,6-naphthalate) ; crystallization process ; induction period ; Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: In situ Fourier transform infrared (FTIR) measurements were carried out to elucidate conformation changes occurring during the isothermal melt crystallization of poly(ethylene-2,6-naphthalate) (PEN). Based on the band assignments for the components of the amorphous, α-crystal form, and β-crystal form of PEN in film samples, the in situ data was analyzed in terms of the amorphous- and crystal-trans conformations. It was observed at a higher isothermal crystallization temperature that the formation of amorphous-trans conformations precedes the growth of crystals. © 1997 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 35: 2741-2747, 1997
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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