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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 45 (1994), S. 36-40 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The orientation capability of thin solution-cast films of a new synthesized crosslinkable thermotropic main chain copolyesterwith itaconoyl units was demonstrated by means ofpolarized FTIR spectrometry. The isotropic films with a thickness of about 10 μm were drawn uniaxially and annealed to get a preferential alignment of the polymer backbone in the drawing direction and an increase of the state of order. The resulted state should be fixed by a following crosslinking reaction of the itaconoyl unit to obatin a thermostable polymeric material with reduced anisotropy of mechanical properties. The orientation effects of mesogenic units dominate in the drawn films of the ternary copolyester. WAXS and DSC results show that annealing of the films produce an increase in crystallinity. More ordered regions in the solid polymer are formed which cause typical changes in the IR spectra.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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