Thermodynamic and kinetic aspects of coassembly of PEO-PMAA block copolymer and DPCl surfactants into ordered nanoparticles in aqueous solutions studied by ITC, NMR, and time-resolved SAXS techniques

0391524 - ÚMCH 2014 RIV US eng J - Journal Article
Uchman, M. - Gradzielski, M. - Angelov, Borislav - Tošner, Z. - Oh, J. - Chang, T. - Štěpánek, M. - Procházka, K.
Thermodynamic and kinetic aspects of coassembly of PEO-PMAA block copolymer and DPCl surfactants into ordered nanoparticles in aqueous solutions studied by ITC, NMR, and time-resolved SAXS techniques.
Macromolecules. Roč. 46, č. 6 (2013), s. 2172-2181. ISSN 0024-9297. E-ISSN 1520-5835
R&D Projects: GA ČR GAP208/10/0353; GA ČR GCP205/11/J043
Institutional support: RVO:61389013
Keywords : isothermal titration calorimetry * SAXS * soft matter
Subject RIV: CD - Macromolecular Chemistry
Impact factor: 5.927, year: 2013

The electrostatic coassembly of a block copolymer polyelectrolyte poly(ethylene oxide-block-poly-(methacrylic acid), PEO705−PMAA476, and oppositely charged surfactant, N-dodecylpyridinium chloride (DPCl), has been investigated by a combination of isothermal titration calorimetry (ITC), spin-echo NMR spectroscopy, and time-resolved SAXS measurements. The results reveal new insight into the thermodynamic and kinetic behavior of the self-assembling system. The most important finding obtained by stopped-flow time-resolved SAXS measurements concerns the surprisingly high rate of processes of creation of structurally ordered cores of self-assembled surfactant−polyelectrolyte nanoparticles (<50 ms).
Permanent Link: http://hdl.handle.net/11104/0221257