Crystal growth rates of tricaprin and trilaurin under high pressures

Chiaki Yokoyama, Yuichi Tamura, Yoshiyuki Nishiyama

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

The effect of hydrostatic pressure on a linear crystal growth rate of tricaprin and trilaurin was investigated by the use of a capillary method in the pressure range up to 200 MPa. The undercooling temperature, ΔT, was varied from 0.65 to 16 K. In order to investigate crystal growth kinetics of triacylglycerols, the melting temperature, density and viscosity were also measured under high pressures. The crystal growth rates of tricaprin and trilaurin decrease with increasing values of pressure applied. It was found that the crystal growth rate, v, can be expressed by the form v = AΔTn with n which can take large value in a range of small ΔT value, whereas n decreases with increasing ΔT value. From the comparison with several theories for the crystal growth from melts, the present result suggests that the two triacylglycerols freeze by the dislocation mechanism in the small ΔT range and by the continuous mechanism in the large ΔT range.

Original languageEnglish
Pages (from-to)827-833
Number of pages7
JournalJournal of Crystal Growth
Volume191
Issue number4
DOIs
Publication statusPublished - 1998 Aug 1

Keywords

  • Experiment
  • Growth rate
  • High pressure
  • Triacylglycerol

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Crystal growth rates of tricaprin and trilaurin under high pressures'. Together they form a unique fingerprint.

Cite this