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Título: | Phase behavior of the n-decanoic acid + thallium(I) n-decanoate system |
Autor: | Rodríguez Cheda, José A.; Fernández, M.; Ungarelli, P.; Ferloni, P.; Fernández Martín, Fernando CSIC | Fecha de publicación: | 2000 | Editor: | American Chemical Society | Citación: | Langmuir 16: 5825- 5830 (2000) | Resumen: | The temperature and enthalpy vs composition diagrams of the binary system [(1 - x) n-C9H21CO2H + (x) n-C9H21CO2Tl, where x = mole fraction] were determined by means of differential scanning calorimetry, differential thermal analysis, and optical microscopy. Besides the usual regions of phase separation, miscibility was observed in isotropic liquid, liquid crystalline, and solid phases. This binary system displays the formation of: (1) a 1:1 molecular compound which melts incongruently at T = 322.2 ± 0.1 K, ΔfusHm = 50.7 ± 0.5 kJ·mol-1; (2) an eutectic at x = 0.125 and T = 302.0 ± 0.1 K, ΔfusHm = 28.3 ± 0.3 kJ·mol-1; (3) a smectic A lyotropic mesophase occurring at T = 373.5 ± 0.1 K over the composition range x > 0.770; (4) a solid solution phase occurring over the composition x > 0.913, and 315.3 K < T < 404.2 K. | URI: | http://hdl.handle.net/10261/103410 | DOI: | 10.1021/la9904511 | Identificadores: | doi: 10.1021/la9904511 issn: 0743-7463 |
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