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  • 1985-1989  (2)
  • 1986  (2)
  • Polymer and Materials Science  (2)
  • 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: The constants derived for the copolymerization systems of allylbenzene, 2-methylpentene-1 and isobutene with acryloninitrile, the rAN values being independent of the comonomer mixture and the yield, as well as the parameters rANL required for estimating the effect of the solvent by combining the overall rate and copolymerization equations were found to correlate linearly with the donor value of the solvent. The effect of the solvent is explained predominantly by the interaction of electrophilic macroradicals being solvated to different degree with acrylonitrile at the chain end.
    Notes: Die für die Copolymerisationssysteme von Allylbenzen, 2-Methylpenten-1 und Isobuten mit Acrylnitril abgeleiteten Konstanten, die von der Comonomermischung und dem Umsatz unabhängigen rAN-Werte sowie die zur Quantifizierung des Lösungsmitteleinflusses aus der Kombination von Bruttogeschwindigeits- und Copolymerisationsgleichung erhaltenen Parameter rANL korrelieren linear mit der Donorzahl der Lösungsmittel. Der Lösungsmitteleinfluß wird vor allem durch die Wechselwirkung des unterschiedlich solvatisierten elektrophilen Makroradikals mit Acrylnitril am Kettenende erklärt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    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 overall rate of copolymerization of the systems acrylonitrile/allylbenzene, acrylonitrile/α-methylstyrene, acrylonitrile/2-methylpentene-1 and, for comparison, acrylonitrile/styrene was determined in dependence on the solvent of the monomer mixture, the overall monomer concentration and the temperature. The results are discussed by means of an empirical overall rate equation.
    Notes: Die Bruttogeschwindigkeit der Copolymerisation der Systeme Acrylnitril/Allylbenzen, Acrylnitril/α-Methylstyren, Acrylnitril/2-Methylpenten-1 und im Vergleich dazu von Acrylnitril/Styren werden in Abhängigkeit vom Lösungsmittel der Monomermischung, der Gesamtmonomerkonzentration und der Temperatur bestimmt. Die Ergebnisse werden mit einer empirischen Bruttogeschwindigkeitsgleichung diskutiert.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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