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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 221 (1994), S. 207-216 
    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: Methylmethacrylat wurde mit Poly(methylphenylsilan) als Photoinitiator polymerisiert. Durch Photolyse der in dem so hergestellten Polymethylmethacrylat (PMMA) noch enthaltenen Polysilanketten in Gegenwart von Vinylmonomeren wie Styrol wurden Blockcopolymere erhalten. Diese wurden eingesetzt, um Blockcopolymere mit Cyclohexenoxid herzustellen. Dies geschieht durch die Bildung von an PMMA gebundenen Silylradikalen, die in Gegenwart von N-Ethoxy-2-methylpyridinium-hexafluor-phosphat zu den entsprechenden Kationen oxidiert werden.
    Notes: Poly(methyl phenyl silane) was used to photoinitiate the polymerization of methyl methacrylate. Poly(methyl methacrylate) (PMMA), obtained this way, contains remaining polysilane chains. Photolysis of this PMMA in the presence of vinyl monomers such as styrene makes it possible to prepare block copolymers. Such PMMA prepolymers were also used to induce the polymerization of cyclohexene oxide through formation of PMMA-attached silyl radicals and subsequent oxidation to the corresponding ions in the presence of N-ethoxy-2-methylpyridinium hexafluorophosphate resulting in the formation of a block copolymer.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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