Application of scanning methods to distinguish between entropy and enthalpy driven phase transitions

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Application of scanning methods to distinguish between entropy and enthalpy driven phase transitions

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Publication Article, review peer-reviewed scientific
Title Application of scanning methods to distinguish between entropy and enthalpy driven phase transitions
Author(s) Kocherbitov, Vitaly
Date 2013
English abstract
All phase transitions can be divided into enthalpy and entropy driven. The driving forces of phase transitions in aqueous soft matter systems can be resolved by applying scanning methods. In this review three experimental methods — sorption calorimetry, differential scanning calorimetry and humidity scanning quartz crystal microbalance with dissipation monitoring are described. Advantages and disadvantages of the methods are discussed. The driving forces of phase transitions can be directly measured using sorption calorimetry or calculated using van der Waals differential equation using experimental data obtained by other methods. The results of experimental studies show that in surfactant and lipid systems the phase transitions to phases with higher curvature are driven by enthalpy, while phase transitions to phases with lower curvature are driven by entropy.
DOI http://dx.doi.org/10.1016/j.cocis.2013.11.003 (link to publisher's fulltext)
Publisher Elsevier
Host/Issue Current Opinion in Colloid & Interface Science;6
Volume 18
ISSN 1359-0294
Pages 510-516
Language eng (iso)
Subject(s) Surfactants
Lipids
Thermodynamics
Phase transition
Driving forces
Entropy
Enthalpy
Gibbs Energy
DDAO
Sciences
Research Subject Categories::NATURAL SCIENCES
Handle http://hdl.handle.net/2043/16489 (link to this page)

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