Počet záznamů: 1
Synthesis and quaternization of nitroxide-terminated poly(4-vinylpyridine-co-acrylonitrile) macroinitiators and related diblock copolymers
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
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