RT Journal Article
T1 Thermodynamic properties of sodium deoxycholate at the gel-sol transition
A1 Jover Ramos, Aida
A1 Troncoso, Jacobo
A1 Gregorio, Maria Chiara di
A1 Fraga López, Francisco
K1 Sodium deoxycholate
K1 Bile salt
K1 Sol-gel transition
K1 Calorimetry
K1 Densitometry
K1 Electron microscopy
AB Sodium deoxycholate forms supramolecular aggregates in aqueous solution that are strongly dependent on temperature and pH. Upon fine tuning of these physicochemical parameters, two supramolecular aggregates can be achieved: a nanotubular phase having viscoelastic, gel-like, behavior and a sponge liquid phase. In this work, the thermodynamics of the transition between the two phases is characterized. Temperatures, volumes, and enthalpies of such transition have been experimentally determined using vibrating tube densitometry and differential scanning calorimetry. In addition, electron microscopy is used to follow the morphological transition between the two supramolecular structures. The dependencies of the thermodynamic properties with the pH and surfactant concentration of the solution are characterized, and the micrographs obtained from electron microscopy is used to explain the thermodynamics of the system
PB Elsevier
YR 2022
FD 2022
LK http://hdl.handle.net/10347/29122
UL http://hdl.handle.net/10347/29122
LA eng
NO Journal of Molecular Liquids 361 (2022) 119621
NO Funding for the present work was provided by the Ministerio de Economía, Industria y Competitividad, Spain (Grant number MAT2017-86109-P), Ministerio de Ciencia y Tecnología, Spain (Grant number PID2020-115722 GB-C22) and European Synchrotron Radiation Facility (ALBA) for the project 2021024910 (2021)
DS Minerva
RD 25 abr 2026