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Characterization of new amphiphilic block copolymers of N-vinylpyrrolidone and vinyl acetate, 2 - chromatographic separation and analysis by MALDI-TOF and FT-IR coupling

  • PVP-block-PVAc block copolymers were synthesized by controlled radical polymerization applying a RAFT/MADIX system and were investigated by HPLC and by coupling of chromatography to FT-IR spectroscopy and MALDI-TOF MS. Chromatographic methods (LACCC and gradient techniques) were developed that allowed a separation of block copolymers according to their repeating units. The results of the spectroscopic and spectrometric analysis clearly showed transfer between radicals and process solvent. With the use of hyphenated techniques differences between main and side products were detected. In agreement with previously published results, obtained by NMR, SEC, static light scattering and MALDI-TOF MS, our data proved a non-ideal RAFT polymerization.

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Metadaten
Autoren/innen:Nick Fandrich, Jana Falkenhagen, Steffen Weidner, B. Staal, Andreas F. Thünemann, A. Laschewsky
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Macromolecular chemistry and physics
Jahr der Erstveröffentlichung:2010
Verlag:Wiley-VCH Verl.
Verlagsort:Weinheim
Jahrgang/Band:211
Ausgabe/Heft:15
Erste Seite:1678
Letzte Seite:1688
Freie Schlagwörter:Amphiphiles; Block copolymers; Gradient chromatography; Hyphenated techniques; Liquid adsorption chromatography at critical conditions; Liquid chromatography; MALDI; MALDI-TOF mass spectrometry; Mechanism of polymerization; Reversible addition fragmentation chain transfer (RAFT)
DOI:https://doi.org/10.1002/macp.201000044
ISSN:1022-1352
ISSN:1521-3935
Verfügbarkeit des Dokuments:Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
Bibliotheksstandort:Sonderstandort: Publica-Schrank
Datum der Freischaltung:19.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:04.10.2010