RT info:eu-repo/semantics/article
T1 Liquid-liquid equilibria for the systems 2-ethoxy-benzenamine + CH3(CH2) CH3 (n = 6,8,10,12) and 4-ethoxy-benzenamine + CH3(CH2) CH3 (n = 5,6)
A1 Alonso Tristán, Cristina
A1 González López, Juan Antonio
A1 García de la Fuente, Isaías
A1 Sanz, Luis Felipe
A1 Cobos, José Carlos .
K1 LLE
K1 Phenetidine
K1 Alkane
K1 Substituted anilines or phenols
K1 Intramolecular effects
K1 Física
K1 Physics
AB 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.
PB Elsevier
SN 0167-7322
YR 2019
FD 2019-01
LK http://hdl.handle.net/10259/5767
UL http://hdl.handle.net/10259/5767
LA eng
DS Repositorio Institucional de la Universidad de Burgos
RD 25-nov-2024