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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 41 (1990), S. 444-446 
    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: By esterification of poly(vinyl alcohol) with boric acid the polarizability perpendicular to the direction of stretching is increased. Using partially saponified poly(vinyl acetate) for the esterfication provides the possibility of receiving an optimum reduction in birefringence and at the same time an improvement in the resistance of the foils to climatic conditions. By this method the range of application of poly(vinyl alcohol) derivatives for the production of birefringent foils can be extended.
    Notes: Durch Veresterung von Poly(vinylalkohol) mit Borsäure wird eine Erhöhung der Polarisierbarkeit senkrecht zur Reckrichtung erzielt. Bei Verwendung von partiell verseiftem Poly(vinylacetat) zur Veresterung wird neben einer optimalen Herabsetzung der Doppelbrechung gleichzeiting eine Verbesserung der Klimastabilität der Folien erreicht. Die Einsetzbarkeit von Poly(vinylalkohol)-Derivaten für die Herstellung von doppelbrechenden Folien wird dadurch erweitert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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