Phase Behavior of Binary Mixtures of a Liquid Crystal and Methane

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• 作者：Mariette de Groen ; Oriol Mesalles Molet ; Thijs J. H. Vlugt ; Theodoor Willem de Loos
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2015
• 出版时间：July 9, 2015
• 年：2015
• 卷：60
• 期：7
• 页码：2167-2171
• 全文大小：260K
• ISSN：1520-5134

文摘

Phase diagrams of binary systems of four different liquid crystals with different polarity and CH₄ are investigated experimentally in this study. The solubility of CH₄ in liquid crystals has not been studied before. The liquid crystals used were 4-ethyl-4鈥?propylbicyclohexyl, 4-pentylcyclohexyl-4鈥?benzonitrile, 4-pentyl-4鈥?cyanobiphenyl, and 4-pentyloxy-4鈥?cyanobiphenyl. The concentration of the methane used was 0.01 wt %. The phase diagrams were studied in the temperature range of (295 to 365) K and up to 13 MPa. The phase equilibria studied were the three-phase equilibria nematic + isotropic + gas, smectic + isotropic + gas, and the two-phase equilibria isotropic + gas 鈫?isotropic, nematic + isotropic 鈫?isotropic, nematic 鈫?nematic + isotropic, and smectic + isotropic 鈫?isotropic. The main conclusion of this study is that increasing the polarity of the solvent leads to a lower solubility of CH₄.