The effect of aqueous solutions of trimethylamine-N-oxide on pressure induced modifications of hydrophobic interactions

2012 ◽  
Vol 137 (9) ◽  
pp. 094502 ◽  
Author(s):  
Rahul Sarma ◽  
Sandip Paul
Keyword(s):  
Aqueous Solutions ◽  
Hydrophobic Interactions

scholarly journals A Note on the Nature of Ionic Hydrations and Hydrophobic Interactions in Aqueous Solutions

1979 ◽  
Vol 52 (9) ◽  
pp. 2483-2488 ◽  
Author(s):  
Kiyoshi Arakawa ◽  
Kazuo Tokiwano ◽  
Norio Ohtomo ◽  
Hisashi Uedaira
Keyword(s):  
Aqueous Solutions ◽  
Hydrophobic Interactions

scholarly journals Hydrophobic interactions for aqueous solutions of polyelectrolyte.

1987 ◽  
Vol 44 (2) ◽  
pp. 107-113
Author(s):  
Shuji MIFUNE ◽  
Kazunao KUBODERA ◽  
Motozo KANEKO
Keyword(s):  
Aqueous Solutions ◽  
Hydrophobic Interactions

A supramolecular model of hydrophobic interactions in aqueous solutions of acenes

2006 ◽  
Vol 80 (3) ◽  
pp. 380-389 ◽  
Author(s):  
Yu. A. Mikheev ◽  
L. N. Guseva ◽  
E. Ya. Davydov ◽  
Yu. A. Ershov
Keyword(s):  
Aqueous Solutions ◽  
Hydrophobic Interactions

Volumes and heat capacities of transfer of ammonium salts from water to aqueous octyldimethylamine oxide at 25 °C

1988 ◽  
Vol 66 (4) ◽  
pp. 767-773 ◽  
Author(s):  
Daniel Hétu ◽  
Jacques E. Desnoyers
Keyword(s):  
Aqueous Solutions ◽  
Thermodynamic Functions ◽  
Transfer Functions ◽  
Hydrophobic Interactions ◽  
Critical Micellar Concentration ◽  
Heat Capacities ◽  
Ammonium Salts ◽  
Salting Out ◽  
Ionic Systems ◽  
Micellization Process

The effect of an additive on a water–surfactant system can be studied through thermodynamic functions of transfer of the additive from water to aqueous solutions of the surfactant. These thermodynamic functions often go through extrema in the region of the critical micellar concentration (cmc) of the surfactant. As it can be shown with a simple chemical equilibrium model, the general shape of the transfer functions is primarily related to the pair-wise hydrophobic interactions between the additive and the surfactant monomers, to a shift in the monomer–micelle equilibrium and to the distribution of the additive between the aqueous phase and the micelles. Medium and electrostatic effects are also possible, especially with ionic systems. To separate these effects and identify the salts which distribute themselves in the micelles, the volumes and heat capacities of transfer of hydrophobic ammonium salts from water to aqueous solutions of dimethyloctylamine oxide have been investigated. The short chain salts have only a small effect on monomer–micelle equilibrium by salting out the monomers, whereas the more hydrophobic ones participate also to the micellization process, shifting more strongly the surfactant monomer–micelle equilibrium.

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