Critical behavior of nanoparticle-containing binary liquid mixtures

0391469 - ÚMCH 2014 RIV GB eng J - Journal Article
Bakaeva, Zulfiya - Černoch, Peter - Štěpánek, Petr - Nallet, F. - Noirez, L.
Critical behavior of nanoparticle-containing binary liquid mixtures.
Physical Chemistry Chemical Physics. Roč. 15, č. 16 (2013), s. 5831-5835. ISSN 1463-9076. E-ISSN 1463-9084
R&D Projects: GA ČR GA202/09/2078
Institutional research plan: CEZ:AV0Z40500505
Keywords : small angle neutron scattering * critical fluctuations * Ginzburg number
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 4.198, year: 2013

Simultaneous measurements of small-angle neutron scattering and dynamic light scattering have been performed on a binary mixture of partially miscible liquids, 2,6-dimethylpyridine and water. At critical composition the temperature dependence of the correlation length of fluctuations in composition is strongly affected by the addition of nanoparticles of a triblock copolymer polyethylene oxide–polypropylene oxide–polyethylene oxide. A crossover between Ising-type critical behavior and mean-field critical behavior is observed when the correlation length is equal to the size of the nanoparticles.
Permanent Link: http://hdl.handle.net/11104/0221171