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Fast pressure quenches near the critical point of a binary liquid mixture

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  • Clerke, E.A.
  • Sengers, J.V.

Abstract

Spinodal decomposition can be induced in liquid mixtures near the critical point by application of a fast pressure quench. As a result of such a pressure quench 1) the relative temperature of the system with respect to the critical temperature changes because of the dependence of the critical temperature on pressure, and 2) the absolute temperature of the system changes because of the finite value of the adiabatic thermal pressure coefficient. Experiments show that the first effect is dominant in isobutyric acid + water studied by other investigators and the second effect is dominant in 3-methylpentane + nitroethane studied by us. It is demonstrated that the adiabatic thermal pressure coefficient undergoes a rapidly varying anomalous behavior at temperatures very close to the critical temperature.

Suggested Citation

  • Clerke, E.A. & Sengers, J.V., 1983. "Fast pressure quenches near the critical point of a binary liquid mixture," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 118(1), pages 360-370.
    • Handle: RePEc:eee:phsmap:v:118:y:1983:i:1:p:360-370
    DOI: 10.1016/0378-4371(83)90205-4
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    References listed on IDEAS

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    1. Easwar, N. & Joshua, M. & Maher, J.V. & Goldburg, W.I., 1983. "Observation of the relaxation of composition fluctuations in a binary liquid mixture," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 118(1), pages 268-281.
    2. Levelt Sengers, J.M.H., 1979. "Liquidons and gasons; controversies about the continuity of states," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 98(3), pages 363-402.
    3. Sengers, J.V. & Van Leeuwen, J.M.J., 1982. "Nonlocal gravity-induced density profiles in gases near the critical point," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 116(3), pages 345-367.
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    Citations

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    1. Nieuwoudt, J.C. & Sengers, J.V., 1987. "Frequency dependence of transport properties of fluids near the critical point," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 147(1), pages 368-386.
    2. Onuki, Akira, 1996. "Adiabatic effects in nucleation near the gas-liquid critical point," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 234(1), pages 189-205.
    3. van Leeuwen, J.M.J. & Sengers, J.V., 1984. "Gravity effects on the correlation length in gases near the critical point," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 128(1), pages 99-131.
    4. Morita, T. & Sato, H. & Uematsu, M. & Watanabe, K., 1989. "PVT properties and vapor-pressures of ordinary water substance in the critical region," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 156(1), pages 436-453.
    5. Tang, S. & Sengers, J.V. & Chen, Z.Y., 1991. "Nonasymptotic critical thermodynamical behavior of fluids," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 179(3), pages 344-377.

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