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Evolution of structure in a comb copolymer-surfactant coacervate
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SYSNO ASEP 0507871 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Evolution of structure in a comb copolymer-surfactant coacervate Author(s) Fanova, A. (CZ)
Janata, Miroslav (UMCH-V) RID
Filippov, Sergey K. (UMCH-V) RID, ORCID, SAI
Šlouf, Miroslav (UMCH-V) RID, ORCID
Netopilík, Miloš (UMCH-V) RID
Mariani, A. (DE)
Štěpánek, M. (CZ)Source Title Macromolecules. - : American Chemical Society - ISSN 0024-9297
Roč. 52, č. 16 (2019), s. 6303-6310Number of pages 8 s. Language eng - English Country US - United States Keywords polyelectrolyte-surfactant complexes ; light and X-ray scattering techniques ; time-resolved SAXS Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects LO1507 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA19-10429S GA ČR - Czech Science Foundation (CSF) TE01020118 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000483437500028 EID SCOPUS 85071655824 DOI 10.1021/acs.macromol.9b00332 Annotation The interaction between a double-hydrophilic comb copolymer with the polyanionic backbone poly[methacrylic acid-stat-poly(ethylene glycol) methyl ether methacrylate] (PMAA–PEGMA) and the cationic surfactant N-dodecylpyridinium chloride (DPCl) was studied in alkaline aqueous solutions by using a combination of light and X-ray scattering techniques, covering 5 orders of magnitude in space (the q vector range from 10–5 to 5 nm–1) and time (from milliseconds to several hours). The results showed that the polyelectrolyte–surfactant (PE–S) complex of PMAA–PEGMA and DPCl forms micrometer-sized coacervate particles containing collapsed PMAA–PEGMA chains with attached and densely packed DPCl micelles. Time-resolved SAXS measurements coupled with a stopped-flow apparatus revealed that the phase separation of the PE–S complex into a coacervate phase occurred in <25 ms after mixing the polyelectrolyte and the surfactant. Thus, microphase separation was faster than the self-assembly of DPCl into densely packed micelles. The terminal stages of polyelectrolyte–surfactant coacervation were dictated by the Ostwald ripening of the droplets in the time range of hours. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2020 Electronic address https://pubs.acs.org/doi/10.1021/acs.macromol.9b00332
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