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  • Chemistry  (1)
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    Electronic Resource
    Electronic Resource
    Kineties of arm-first star polymers formation in a non-polar solvent (1998)
    Weinheim : Wiley-Blackwell
    Macromolecular Chemistry and Physics 199 (1998), S. 569-574 
    Details
    ISSN: 1022-1352
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Star polymer formation by sequential anionic copolymerization of styrene and divinylbenzene in a non-polar solvent (benzene) was re-examined. Kinetic investigations established that the core formation is rather slow. Moreover, once the star molecules have reached their plateau molar mass, their cores still contain residual pendant unsaturations. This result arose from UV spectroscopic determinations, and was checked by sec-butyllithium addition to the star polymer solution. Fractionation experiments confirmed the rather narrow molar mass distribution in star polymer samples obtained by this arm-first process.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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