Effect of film thickness and supercooling on the performance of cholesteryl cinnamate liquid crystal capillary columns |
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| Authors: | R R Heath J R Jordan P E Sonnet |
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| Abstract: | Improved separations of the isomers of olefinic aliphatic insect pheromones were obtained on cholesteryl cinnamate glass capillary columns by operating in the supercooled temperature range of the liquid crystal. Capillary columns were prepared with varying film thickness of the stationary phase; choice of the correct film thickness ensured optimum retention for a wide range of compounds within the most effective temperature range of the liquid crystal. The deactivation procedures described made the liquid crystal columns suitable for separation of the geometric isomers of polar and nonpolar compounds. |
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| Keywords: | Gas chromatography Capillary glass Cholesteric liquid crystal phase Film thickness and temperature study Separation of geometrical isomers |
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