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Polyelectrolyte-surfactant complexes formed by poly[3,5-bis(trimethylammoniummethyl)4-hydroxystyrene iodide]-block-poly(ethylene oxide) and sodium dodecyl sulfate in aqueous solutions
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SYSNO ASEP 0359222 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Polyelectrolyte-surfactant complexes formed by poly[3,5-bis(trimethylammoniummethyl)4-hydroxystyrene iodide]-block-poly(ethylene oxide) and sodium dodecyl sulfate in aqueous solutions Author(s) Štěpánek, M. (CZ)
Matějíček, P. (CZ)
Procházka, K. (CZ)
Filippov, Sergey K. (UMCH-V) RID, ORCID, SAI
Angelov, Borislav (UMCH-V) RID
Šlouf, Miroslav (UMCH-V) RID, ORCID
Mountrichas, G. (GR)
Pispas, S. (GR)Source Title Langmuir. - : American Chemical Society - ISSN 0743-7463
Roč. 27, č. 9 (2011), s. 5275-5281Number of pages 7 s. Language eng - English Country US - United States Keywords polyelectrolyte-surfactant complexes ; sodium dodecyl sulfate ; small-angle X-ray scattering Subject RIV CD - Macromolecular Chemistry R&D Projects ME09059 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GCP205/11/J043 GA ČR - Czech Science Foundation (CSF) GAP208/10/0353 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40500505 - UMCH-V (2005-2011) UT WOS 000289742500013 DOI 10.1021/la200442s Annotation Formation of polyelectrolyte−surfactant (PE−S) complexes of poly[3,5-bis(trimethylammoniummethyl)-4-hydroxystyrene iodide]-block-poly(ethylene oxide) (QNPHOS−PEO) and sodium dodecyl sulfate (SDS) in aqueous solution was studied by dynamic and electrophoretic light scattering, SAXS, AFM, and fluorometry. SAXS data from the QNPHOS−PEO/SDS solutions were fitted assuming contributions from free copolymer, PE−S aggregates described by a mass fractal model, and densely packed surfactant micelles inside the aggregates. It was found that, unlike other systems of a double hydrophilic block polyelectrolyte and an oppositely charged surfactant, PE−S aggregates of the QNPHOS−PEO/SDS system do not form core−shell particles and the PE−S complex precipitates before reaching the charge equivalence between dodecyl sulfate anions and QNPHOS polycationic blocks, most likely because of conformational rigidity of the QNPHOS blocks, which prevents the system from the corresponding rearrangement. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2012
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