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    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Der Effekt von Farbstoffen auf den Spannungsrelaxationsmodul von Polyacrylnitril und Polyamid wurde untersucht. p-Aminobiphenyl als Modellverbindung für Dispersionsfarbstoffe senkt die Glasumwandlungstemperatur von Polyacrylnitril zusätzlich zu der durch Wasser verursachten Erniedrigung. Andere nichtionische Verbindungen bewirken den gleichen Effekt. Dagegen beeinflußt Malachitgrün den Spannungsrelaxationsmodul nicht. Die Mechanismen der Plastizierung durch Farbstoffmoleküle und die Konzentrationsabhängigkeit des Diffusionskoeffizienten werden diskutiert.
    Notes: The effect of dye on the stress relaxation modulus of poly(acrylonitrile) and polyamide was determined. p-Aminobiphenyl as a model compound for dispersed dyes depresses the glass transition temperature of poly(acrylonitrile) in addition to the depression caused by water. Other non-ionic diffusants were examined and produce a similar effect. In contrast, malachite green has no effect on the stress relaxation modulus. The mechanism of plasticization by dye molecules and the concentration dependence of the diffusion coefficient is discussed.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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