Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi 1301-7985 2536-5142 Balıkesir University 4-[4-(2-Etilhekziloksi)benzoiloksi]benzoik asid Sıvı Kristalinin Bazı Çözücülerle Termodinamik Etkileşimleri Thermodynamical Interactions of 4-[4-(2- Ethylhexyloxy)benzoyloxy] benzoic acid Liquid Crystals with Some Solvents Ocak Hale Mutlu Serap Öztürk Emine Aygün Özge Bilgin Eran Belkıs Cankurtaran Özlem Karaman Ferdane 12 01 2012 14 2 67 74 12 01 2012 Copyright © 1999, Journal of Balıkesir University Institute of Science and Technology 1999 Journal of Balıkesir University Institute of Science and Technology

Bu çalışmada 4-[4-(2-Etilhekziloksi)benzoiloksi]benzoik asid’in n-alkanlar ile termodinamik etkileşimleri ters gaz kromatografi metoduyla incelendi. Çözücülerin alıkonma hacimlerinden, 170oC-195oC sıcaklık aralığında, sonsuz seyreltiklikteki ağırlık kesri aktivite katsayısı, Ω1∞, Flory-Hugginsve hal denklemi etkileşim parametreleri ((X12∞ ve X12*), etkin değişim enerji parametresi X12-, kısmi molar sorpsiyon ısısı, ΔHs-, kısmi molar karışma ısısı, ΔH1∞-, molar buharlaşma ısısı, ΔHv- gibitermodinamik etkileşim parametreleri hesaplandı.

In this study, thermodynamic interactions of 4-[4-(2-Ethylhexyloxy)benzoyloxy] benzoic acid liquid crystal with n-alkane were examined by inverse gas chromatography method. From the retention volumes, it was calculated some thermodynamic interaction parameters such as the weight fraction activity coefficient of the solvents at infinite dilution, Ω1∞, Flory-Huggins and hard core polymer-solvent interaction parameters, (X12∞ and X12*), effective exchange energy parameter,X12- the partial molar heat of sorption, ΔHs- the partial molar heat of mixing, ΔH1∞- and molar heat of vaporization, ΔHv- at temperature range between 170 oC and 195oC

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