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  • 1
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Polymerisation von Acrylnitril und Methylmethacrylat wurde in Anwesenheit von α-Aminosäureester sowie Kupfer(II)ionen in Dimethylsulfoxidlösung untersucht. Spektroskopische Messungen bestätigten, daß der Start-Mechanismus der durch das System α-Aminosäureester/Kupfer(II)ion initiierten Polymerisation mit den komplexbildenden Eigenschaften des Systems zusammenhängt. Die Polymerisation der beiden Monomeren war von der Art der α-Alkylgruppe der α-Aminosäureester abhängig, wurde aber von der Art der Estergruppe nicht beeinflußt. Basierend auf den Ergebnissen, wurde der Charakter der freien Radikale diskutiert.
    Notes: Polymerization of acrylonitrile and methyl methacrylate was studied in the presence of an α-amino acid ester and copper(II) ion in dimethyl sulfoxide solution. The initiation mechanism of the polymerization by the α-amino acid ester/copper(II) system was refered to the complex forming properties of the system, confirmed by spectroscopic measurements. The polymerization of both monomers was influenced by the kind of the α-alkyl group of the α-amino acid esters, but it was not affected by the kind of the ester groups. The carboxylic group of the esters was found to affect only the polymerization of methyl methacrylate. Based on the results, the character of the free radicals was discussed.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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