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  • 1
    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: Ultrasonic measurements were carried out with ethyl acrylate (EA)/vinyl acetate (VAC)/acrylic acid (VS) terpolymers in aqueous dispersion. The experimental results were compared with data obtained by 13C-NMR investigations and explained by considering the mean sequence length. Three phases were detected consisting of polyvinylacetate, polyethylacrylate and P(VAC-EA). The fraction of these phases within the dispersed particle was calculated from the mean sequence length. A quantitative correlation was established by using the corresponding values of ultrasonic absorption and particle compressibility.
    Notes: An Wäßrigen Dispersionen von Ethylacrylat (EA)/Vinylacetat (VAC)/Acrylsäure (AS)-Terpolymeren wurden Ultraschalluntersuchungen durchgefährt. Die experimentellen Ergebnisse wurden mit 13C-NMR-Daten verglichen und aur der Basis der mittleren Sequenzlängen interpretiert. Es konnte die Existenz von deri Phasen, bestenhend aus Polyvinylacetat, Polyethylacrylat sowie P(VAC-EA), nachgewiesen werden. Der Anteil der Phasen am Dispersionsteilchen wurde mit Hilfe der mittleren Sequenzlängen berechnet. Es wurde eine quantitative Korrelation mit entsprechenden Werten der Ultraschallabsorption und der Teilchenkompressibilität gefunden.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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