The interaction between alkanes with various chain length (solute) and liquid crystal substance, cholesteryl myristate (ChM : crystal→smectic→cholesteric→isotropic liquid), was studied by gas-liquid chromatography (GLPC), its stationary phase being composed of ChM and solid support, Chromosorb W. With variations in the gas flow-rate, ChM content in the stationary phase, and column temperature, the specific retention volume of each solute, V
g, was measured and its standard free energy, enthalpy, and entropy of solution in ChM, Δ
soln G
2⦵, Δ
soln H
2⦵, Δ
soln S
2⦵, were calculated. The gas flow-rate had a slight effect on V
g of the stationary phase with a large ChM content, although this effect could be nullified by the extrapolation of V
g to zero flow-rate. Logarithm of V
g or Δ
soln G
2⦵ depends almost linearly on the ChM content. From the analysis of Δ
soln G
2⦵ vs. temperature relationship, the effect of ChM content on Δ
soln G
2⦵ was found to be due to the contribution of Δ
soln S
2⦵, i.e., destruction of the liquid crystal structure by solute molecules.
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