• DOI:10.1021/ACS.MACROMOL.9B00332
• Corpus ID: 202079335

Evolution of Structure in a Comb Copolymer–Surfactant Coacervate

@article{Fanova2019EvolutionOS,
  title={Evolution of Structure in a Comb Copolymer–Surfactant Coacervate},
  author={Anastasiia Fanova and Miroslav Janata and Sergey K. Filippov and Miroslav {\vS}louf and Milo{\vs} Netopil{\'i}k and Alessandro Mariani and Miroslav {\vS}těp{\'a}nek},
  journal={Macromolecules},
  year={2019}
}

• Anastasiia Fanova, Miroslav Janata, +4 authors M. Štěpánek
• Published 16 August 2019
• Materials Science, Chemistry
• Macromolecules

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 micelle...