2026-05-30T08:59:42Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/57672024-11-05T10:56:27Zcom_10259_4393com_10259_5086com_10259_2604col_10259_4394

Alonso Tristán, Cristina González López, Juan Antonio García de la Fuente, Isaías Sanz, Luis Felipe Cobos, José Carlos . LLE Phenetidine Alkane Substituted anilines or phenols Intramolecular effects Liquid-liquid equilibria (LLE) phase diagrams have been determined for the systems: 2-ethoxy-benzenamine + octane, or +decane, or +dodecane, or +tetradecane and for 4-ethoxy-benzenamine + heptane, or +octane. The experimental method used is based on the observation, by mean of a laser scattering technique, of the turbidity produced on cooling when a second phase takes place. All the mixtures show an upper critical solution temperature, which increases with the alkane size. Dipolar interactions between like molecules become stronger in the sequence: 2-ethoxy-benzenamine < aniline < 4-ethoxy-benzenamine. Data available in the literature suggest that this relative variation is also valid for alkane mixtures containing other substituted anilines or phenols, characterized by having a second polar group. The dependence of the UCST values with the molecular structure of the polar aromatic compound involved is shortly discussed in terms of intramolecular and steric effects. 2021-05-17 2021-05-17 2019-01 info:eu-repo/semantics/article 0167-7322 http://hdl.handle.net/10259/5767 10.1016/j.molliq.2018.10.135 eng Journal of Molecular Liquids. 2019, V. 274, p. 534-539 https://doi.org/10.1016/j.molliq.2018.10.135 http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional Elsevier