Study of the phase behavior of n-pentacosane C25H52 by optical method

For two samples of n-pentacosane dispersions in water with different average size of the dispersed phase, the melting, crystallization and rotator phase temperatures are determined by optical method. For particles, that have a radius of 100 nm, the temperatures of phase transition correspond with the published data. For particles with a radius, that is not exceeding 50 nm, a significant undercooling of n-pentacosan drops happens.

[1]  P. Gushchin,et al.  Comparison of micro-DSC and light scattering methods for studying the phase behavior of n-alkane in the oil-in-water dispersion , 2020, Journal of Thermal Analysis and Calorimetry.

[2]  A. N. Tkachenko,et al.  Determination of phase transition temperatures (melting, crystallization, rotator phases) of n-alkanes by the optical method , 2020, IOP Conference Series: Materials Science and Engineering.

[3]  D. Shchukin,et al.  Study of Phase Transitions in n-Tricosane/Bitumen Aqueous Dispersions by the Optical Method , 2020 .

[4]  B. Z. Volchek,et al.  Crystal structure transformations during phase transitions in homologues of n-alkanes: C23H48, C24H50, C25H52 as revealed by FT-IR spectroscopy , 2019, Journal of Physics: Conference Series.

[5]  V. Kuryakov,et al.  Determination of melting point of n-alkanes by means of light scattering technique , 2019, Journal of Physics: Conference Series.

[6]  V. Kuryakov,et al.  Crystallization Behavior of Pure n-Alkane (n-Nonadecane) in a form of Nanoemulsion , 2019, International Journal of Nanoscience.

[7]  Sheikh Ahmad Zaki,et al.  A review on phase change material (PCM) for sustainable passive cooling in building envelopes , 2016 .

[8]  M. Deutsch,et al.  Measurements of homogeneous nucleation in normal-alkanes , 2000 .

[9]  J. Daridon,et al.  Pressure and Temperature Dependence of the Speed of Sound and Related Properties in Normal Octadecane and Nonadecane , 2000 .

[10]  E. Sirota,et al.  PHASE TRANSITIONS AMONG THE ROTATOR PHASES OF THE NORMAL ALKANES , 1994 .

[11]  E. Sirota,et al.  Rotator phases of the normal alkanes: An x‐ray scattering study , 1993 .

[12]  G. Ungar.  Structure of rotator phases in n-alkanes , 1983 .