Pressure-induced phase transition in soy oil

Author: Rostocki A. J.   Kosciesza R.   Tefelski D. B.   Kos A.   Siegoczynski R. M.   Chruscinski Ł.  

Publisher: Taylor & Francis Ltd

ISSN: 0895-7959

Source: International Journal of High Pressure Research, Vol.27, Iss.1, 2007-03, pp. : 43-45

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Abstract

Following the earlier works [R.M. Siegoczynski, Reports of the Institute of Physics. No. 46, Publishing House of the Warsaw University of Technology (1998). R.M. Siegoczynski, J. Jedrzejewski and R. Wisniewski, High Pressure Res. 1 225-301 (1989).] on the investigation of oily liquids such as oleic and triolein, authors predicted the occurrence of a phase transition in the wide class of commercial oils containing oils with double carbon bonds. Those predictions have been confirmed by the observation of the phase transition in rapeseed oil [A.J. Rostocki, R. Wisniewski and T. Wilczynska, in press]. The present article shows further confirmation of those predictions presenting first-order phase transition in soy oil. The measurements performed in the range up to 1 GPa have shown pressure-related discontinuity of permittivity and volume.