Publication Type Journal Article
Title Revealing microheterogeneities and second order phase transitions in aqueous mixtures of 1-propoxypropan-2-ol at 298 K
Authors Isabel M. S. Lampreia A.F. Santos Carlos M. Borges M. Soledade C. S. Santos M. L. C. J. Moita JC Reis
Groups MTFT MET
Journal PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Year 2016
Month July
Volume 18
Number 26
Pages 17506-17516
Abstract Second order phase transitions corresponding to discontinuities in the plots of Kirkwood-Buff integrals as a function of composition were observed in aqueous mixtures of the amphiphilic molecule, 1-propoxy-propan-2-ol, revealing the formation of hydrophobic aggregates and generating microheterogeneities over a limited range of compositions. Electrospray mass spectra, surface tension measurements and solvatochromic parameters confirmed the onsets of different aggregation patterns over the entire composition range, and allowed us to scrutinize the prevailing types of aggregate species. This is seemingly the first time that such discontinuities are clearly assumed as second order phase transitions in a system macroscopically homogeneous and corroborated by other independent tools.
DOI http://dx.doi.org/10.1039/c6cp02408d
ISBN
Publisher ROYAL SOC CHEMISTRY
Book Title
ISSN 1463-9076
EISSN 1463-9084
Conference Name
Bibtex ID ISI:000379482100045
Observations
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