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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 33 (1982), S. 1-8 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The field-induced change of conformation and dipole orientation in poly(vinylidene fluoride) are investigated quantitatively by IR spectroscopy. The polarity of biaxially stretched poly(vinylidene fluoride) films which have been metallized on both sides results at 115°C and 4.0 MV/cm in almost complete conformational change from the T-G-T-G′ to the trans-conformation as well as in a remanent polarization of at least 11 μC/cm2. While thermally stimulated dipole desorientation is initiated above 60°C the field-induced β-modification proved to be stable up to 175°C.
    Notes: Die feldinduzierte Konformationsumwandlung und Dipol-Orientierung in Polyvinylidenfluorid werden infrarotspektroskopisch quantitativ untersucht. Die Polung an beidseitig metallisierten, biaxial gereckten Polyvinylidenfluorid-Folien bei 115°C mit 4,0 MV/cm führt zu einer nahezu vollständigen Konformationsumwandlung von der T-G-T-G′- in die trans-Konformation und zu einer remanenten Polarisation von mindestens 11 μC/cm2. Während die thermisch stimulierte Dipol-Desorientierung oberhalb 60°C einsetzt, ist die feldinduzierte β-Modifikation bis 175°C stabil.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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