Light scattering studies of phase separation in isobutyric acid + water mixtures
- 15 July 1978
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 69 (2) , 725-735
- https://doi.org/10.1063/1.436582
Abstract
Measurements are reported of light scattering by isobutyric acid + water mixtures that have been quenched into the two-phase region by a pressure-jump technique. The conditions of the jump method are discussed in detail. Examples are given of the behavior of the scattered intensity I (k,t) as a function of the time t and scattering vector k. Power-law expressions of the form km =A′t−a′ are found to represent the time dependence of the angle of maximum scattering. The intensity at the maximum can be represented by power laws as well: I (km) =A″ta″. For mixtures of the critical composition both a′ and a″ depend on quench depth; for other mixtures a′?0.3 and a″?1.1. Two measurements made at the cloud point show an initial t2 growth in I (km) followed by a slower growth ∝t1/2.Keywords
This publication has 28 references indexed in Scilit:
- Theory for the dynamics of "clusters." II. Critical diffusion in binary systems and the kinetics of phase separationPhysical Review B, 1977
- Coexistence curves at liquid-liquid critical points: Ising exponents and extended scalingPhysical Review A, 1976
- Time evolution of a quenched binary alloy. II. Computer simulation of a three-dimensional model systemPhysical Review B, 1975
- Theory for the Slowing Down of the Relaxation and Spinodal Decomposition of Binary MixturesPhysical Review Letters, 1974
- Small angle X-ray scattering evidence of G.P. zones formed by nucleation and growth in an Al-6.8 at % Zn alloyScripta Metallurgica, 1974
- Homogeneous Nucleation in a Critical Binary Fluid MixturePhysical Review Letters, 1974
- Study of Phase Separation in a Critical Binary Liquid Mixture: Spinodal DecompositionPhysical Review Letters, 1974
- Comparison of Experiments with the Modified Mode-Mode Coupling Theory of Kawasaki in Binary FluidsPhysical Review A, 1973
- Low-Temperature Critical Exponents from High-Temperature Series: The Ising ModelPhysical Review B, 1970
- Spatial and time-dependent concentration fluctuations of the isobutyric acid-water system in the neighborhood of its critical mixing pointJournal of the American Chemical Society, 1968