title: Critical behavior of nanoparticle-containing binary liquid mixtures.
abstract: 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.
authors.affiliation: Institute of Macromolecular Chemistry, Heyrovsky Sq. 2, 16206 Prague, Czech Republic. bakaeva@imc.cas.cz
authors.forename: Z
authors.initials: Z
authors.lastname: Bakaeva
authors.forename: P
authors.initials: P
authors.lastname: Černoch
authors.forename: P
authors.initials: P
authors.lastname: Štěpánek
authors.forename: F
authors.initials: F
authors.lastname: Nallet
authors.forename: L
authors.initials: L
authors.lastname: Noirez