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Glass transition in crude oil under pressure detected by the transient hot-wire method

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Abstract

The transition to the glassy state has been found in viscous crude oil with the transient hot-wire technique. The thermal conductivity and the specific heat per unit volume of the heavy Usinsk oil have been measured up to 1 GPa in the temperature range 200–400 K. The glass transition temperature was defined as the temperature of halfway change of the specific heat. It has also been found that the higher the pressure, the narrower the glass transition region, i.e., the steeper the specific-heat change in this region. The nature of glass transitions in crude oils is discussed.

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Authors and Affiliations

  1. State Academy of Oil and Gas, 117917, Moscow, Russia

    V. Kutcherov, M. Anisimov & A. Chernoutsan

  2. Department of Experimental Physics, University of Umeå, S-90187, Umeå, Sweden

    G. Bäckström

  3. Department of Physics, Oil and Gas Research Institute of the Russian Academy of Sciences, 117917, Moscow, Russia

    M. Anisimov

Authors
  1. V. Kutcherov
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  2. G. Bäckström
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  3. M. Anisimov
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  4. A. Chernoutsan
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Kutcherov, V., Bäckström, G., Anisimov, M. et al. Glass transition in crude oil under pressure detected by the transient hot-wire method. Int J Thermophys 14, 91–100 (1993). https://doi.org/10.1007/BF00522664

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  • DOI: https://doi.org/10.1007/BF00522664

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