Pressure-induced phase transition of methyl alcohol doped castor oil

Wiśniewski, R.; Siegoczyński, R. M.; Borowik, Piotr; Krukowski, M.; Tucholski, M.

doi:10.1063/1.46332

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2003

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“…During the phase transition a strong decrease of permittivity [3] was also observed. Similar phenomena were observed in methyl alcohol doped castor oil (foc 5, 10, 15 and 20 of volume %) with experimental parameters different from those for pure castor oil [4]. For example,' the shortest time after which the high pressure phase appears is only 3.5 hours (under an initial pressure of 0.95 GPa, at room temperature and of 20 volume % of methyl alcohol content).…”

Section: Introductionsupporting

confidence: 68%

Viscosity of the Methyl Alcohol Doped Castor Oil High-Pressure Phase

Wiśniewski

Siegoczyński

2003

GHPR

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To link to this article: http://dx.High-pressure apparatus (up to 1 GPa) for viscosity measurements (using the capillary method) of a high-viscous medium has been constructed. High-pressure phases of pure castor oil and methyl alcohol doped castor oil, which had been obtained earlier, were generated and their viscosity measured. Values of viscosity as high as 160kPas for pure castor oil and 60kPas for methyl alcohol doped castor oil (about 5 of volume %), at a small shear rate panmeter equal to about 0.1 s-', were measured and their structural (tixotropic) type viscosity (consistency) were discovered.

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Section: Introductionsupporting

confidence: 68%