Počet záznamů: 1

Synthesis and quaternization of nitroxide-terminated poly(4-vinylpyridine-co-acrylonitrile) macroinitiators and related diblock copolymers

  1. 1.
    0347079 - UMCH-V 2011 RIV US eng J - Článek v odborném periodiku
    Poláková, Lenka - Lokaj, Jan - Holler, Petr - Starovoytova, Larisa - Pekárek, Michal - Štěpánek, Petr
    Synthesis and quaternization of nitroxide-terminated poly(4-vinylpyridine-co-acrylonitrile) macroinitiators and related diblock copolymers.
    E-Polymers. -, 065 (2010), s. 1-10 ISSN 1618-7229
    Grant CEP: GA ČR GESON/06/E005; GA ČR GA203/07/0659
    Výzkumný záměr: CEZ:AV0Z40500505
    Klíčová slova: 4-vinylpyridine-acrylonitrile copolymers * block copolymers * nitroxide-mediated radical polymerization
    Kód oboru RIV: CD - Makromolekulární chemie
    Impakt faktor: 0.574, rok: 2010
    http://www.e-polymers.org/journal/papers/lpolakova_240710.pdf http://www.e-polymers.org/journal/papers/lpolakova_240710.pdf

    Nitroxide-terminated 4VPAN copolymers have been synthesized at 125 ºC using an alkoxyamine (MAMA-SG1) as a unimolecular initiator. Their compositions were compared with those published for the conventional radical 4VP-AN copolymerization. To verify the initiation potential of the copolymers containing nitroxyl end groups, they were employed in chain extension with styrene (S). Both the prepared statistic copolymer macroinitiators and related diblock copolymers, poly(4VP-co-AN) and poly(4VP-co-AN)-block-poly(S), respectively, were quaternized with methyl iodide in N,N-dimethylformamide or methanol at ambient temperature. The size-exclusion chromatography and NMR were used for the characterization of the polymers; the completeness of the quaternization was checked by the IR spectrometry.
    Trvalý link: http://hdl.handle.net/11104/0006005