Dynamics of Concentration Fluctuations in a Binary Mixture in the Hydrodynamical and Nonhydrodynamical Regimes

Bergé, P.; Calmetter, P.; Làj, C.; Tournarie, M.; Volochine, B.

doi:10.1103/physrevlett.24.1223

Cited by 55 publications

(8 citation statements)

References 9 publications

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“…The same expression (Equation 144) holds true for solutions of LMW compounds and polymers near the spinodal as well (Chu and Schoenes, 1968;Berge et al, 1970;Lai and Chen, 1972) (cf. subsection 2.4.4 and section 2.5).…”

Section: Light Scattering In Gels 417mentioning

confidence: 75%

Thermodynamics of Systems Containing Flexible-Chain Polymers

Klenin¹,

Frenkelʹ²

1999

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Section: Light Scattering In Gels 417mentioning

confidence: 75%

Thermodynamics of Systems Containing Flexible-Chain Polymers

Klenin¹,

Frenkelʹ²

1999

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“…We have found three systems in the literature for which both Rayleigh linewidth measurements and the background viscosity in the critical region have been determined. These systems are 3-methylpentane and nitroethane (Chang et al, 1971 and Tsai et al, 19 73), 2,6-lutidine and water (Gulari et al, 1972) and aniline and cyclohexane (Berge et al, 1970 andArcovito et al, 1969). Using nb at TC and the linewidth data we find -1 -* y =r at kE>>1.…”

Section: Comparison Of the Dynamic Droplet Model To Thementioning

confidence: 81%

Polarized and depolarized light-scattering studies on Brownian diffusional and critical fluid systems: theory and experiment

Sorensen¹

1976

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DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency Thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. DISCLAIMER Portions of this document may be illegible in electronic image products. Images are produced from the best available original document.

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“…1 corresponds to T = 1.68Di;if 3 , which is in agreement with (9) when experimental errors are taken into account and also with the results of the previously mentioned study of the cyclohexane-aniline system. 7 Also, it was observed that in BWA, i; 0 r 2 /£ 0 2 = 0-3…”

Section: Liml^ozermentioning

confidence: 96%

“…As usual K = (47r/x) sin|0, where A is the wavelength of light in the mixture. In contrast, observations at the same scattering angle in the pure binary mixture cyclohexane-aniline give K£ T = 1 when AT< 0.03° C. 7 By making measurements at several scattering angles and covering a wide temperature range, it was possible to span both the hydrodynamic (K£« 1) and nonhydrodynamic (K%» 1) regimes. 8 In addition to yielding values of y and y*, the data also provided a determination of the exponents v and v T .…”

mentioning

confidence: 95%

Light-Scattering Study of the Critical Behavior of a Three-Component Liquid Mixture

1970

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Light scattering measurements were made in the ternary system bromobenzene-wateracetone, with the acetone playing the role of an impurity. Because of the long range of the concentration fluctuations exhibited by this system, it was possible to explore with relative ease the nonhydrodynamic as well as the hydrodynamic regimes. Measurements of both the intensity and spectral width of the scattered light yielded a number of parameters which could be compared with several forms of theory.Recently reported light scattering measurements 1 revealed that the addition of roughly 6% H 3 P0 2 to a critical binary mixture of phenol and water produced virtually no change in the critical exponents y and y*. These exponents characterize, respectively, the divergence of the scattered light intensity CO and the inverse spectral width (T" 1 ) as the critical temperature, T c , is approached. The aim of the present experiment was to examine critical behavior of a system in which the fraction of impurity present was very large. We chose for this study a critical mixture of bromobenzene (18.8 wt%), water (23.6 wt%), and acetone (57.6 wt%), with the acetone playing the role of the impurity. 2 " 4The experimental techniques for measuring / and T have been described in Ref. 1. The primao ry light source was the 6328-A line from a 15-mW He-Ne laser. Sample preparation was facilitated by the fact that bromobenzene-water-acetone (henceforth referred to as BWA) has a very symmetric binodal curve in a wt% representation. 5 Except where otherwise noted, the experiments were carried out above T c , which was 28.39°C. The intensity and spectral width measurements spanned the intervals 1°C ^ AT ^ 8°C and 0.025°C^AT^6°C, respectively, where AT -x x c .Probably the most striking property of BWA is the long range of the critical fluctuations which this system (and perhaps a large class of ternary systems 6 ) exhibits. For example, at a scattering angle 9 of 144° we observe that the product of the photon momentum transfer K and the correlation length £r is unity when AT = 0.3°C. As usual K = (47r/x) sin|0, where A is the wavelength of light in the mixture. In contrast, observations at the same scattering angle in the pure binary mixture cyclohexane-aniline give K£ T = 1 when AT< 0.03° C. 7 By making measurements at several scattering angles and covering a wide temperature range, it was possible to span both the hydrodynamic (K£« 1) and nonhydrodynamic (K%» 1) regimes. 8

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Dynamics of Concentration Fluctuations in a Binary Mixture in the Hydrodynamical and Nonhydrodynamical Regimes

Cited by 55 publications

References 9 publications

Thermodynamics of Systems Containing Flexible-Chain Polymers

Thermodynamics of Systems Containing Flexible-Chain Polymers

Polarized and depolarized light-scattering studies on Brownian diffusional and critical fluid systems: theory and experiment

Light-Scattering Study of the Critical Behavior of a Three-Component Liquid Mixture

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