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Frontiers of Physics

Front. Phys.    2018, Vol. 13 Issue (1) : 138201
Contrasting microscopic interactions determine the properties of water/methanol solutions
Carmelo Corsaro1,2(), Francesco Mallamace1,2,3,4, Sebastiano Vasi2, Sow-Hsin Chen3(), H. Eugene Stanley4, Domenico Mallamace5()
1. CNR-IPCF Messina, Istituto per i Processi Chimico-Fisici, Viale F. Stagno D’Alcontres 37, 98158 Messina, Italy
2. Dipartimento MIFT, Sezione di Fisica, Università di Messina, Viale F. Stagno D’Alcontres 31, 98166 Messina, Italy
3. Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
4. Center for Polymer Studies and Department of Physics, Boston University, Boston, MA 02215, USA
5. Consorzio interuniversitario per lo sviluppo dei Sistemi a Grande Interfase- CSGI, Via della Lastruccia 3, 50019 Sesto Fiorentino, Firenze, Italy
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Herein we study the different microscopic interactions occurring in water/methanol solutions at different methanol molar fractions, using NMR spctroscopy. Temperature was found to determine which interaction dominates. It was found that the mixing between water and methanol is non-ideal because of the presence of interactions like hydrophobicity and hydrophilicity. These results indicate that the competition between hydrophilic and hydrophobic interactions is different in different thermal regions, and that the physical properties of the solution are determined by the character of the solution itself, which in turn depends on the mole fraction of methanol and on the temperature.

Keywords aqueous solutions      hydrophobicity      NMR      hydrophilicity     
This article is part of themed collection: Water and Water Systems
Corresponding Authors: Carmelo Corsaro   
Issue Date: 28 February 2018
 Cite this article:   
Carmelo Corsaro,Francesco Mallamace,Sebastiano Vasi, et al. Contrasting microscopic interactions determine the properties of water/methanol solutions[J]. Front. Phys. , 2018, 13(1): 138201.
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Carmelo Corsaro
Francesco Mallamace
Sebastiano Vasi
Sow-Hsin Chen
H. Eugene Stanley
Domenico Mallamace
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