Interfacial water, structure

Interfacial Water Structure at Polyvinyl Alcohol (PVA) Gel/Quartz Interfaces Investigated by SFC Spectroscopy... 

Interfacial Water Structure at Po/yw ny/ Alcohol (PVA) Cel/Quartz Interfaces 91... 

Uosaki, K., Yano, T. and Nihonyanagi, S. (2004) Interfacial water structure at as-prepared and UV-rnduced hydrophilic Ti02 surfaces studied hy sum frequency generation spectroscopy and quartz crystal microhalance. J. Phys. Chem. B, 108, 19086-19088. 

Noguchi, H., Minowa, H., Tominaga, T., Gong, J. P., Osada, Y. and Uosaki, K. (2008) Interfacial water structure at polymer gel/quartz interfaces investigated by sum frequency generation spectroscopy. Phys. Chem. Chem. Phys., 10, 4987-4993. 

An attempt was made to study changes in interfacial water structure in the presence of halothane in the monolayer however, total absorption of the IR just above 3000 cm by halothane in the CCI4 prevents the acquisition of a complete, continuous spectrum. 

R283 M. Colic and J. Miller, The Significance of Interfacial Water Structure in Colloidal Systems - Dynamic Aspects , Surfactant Sci. Ser., 2000,... 

P. Ahlstrom, O. Teleman, and B. jonsson,/. Am. Chem. Soc., 110, 4198 (1988). Molecular Dynamics Simulation of Interfacial Water Structure and Dynamics in a Paravalbumin Solution. 

Cobc M. and Miller J.D. 2000. The significance of interfacial water structure in colloidal systems -dynamic aspects. In, Interfacial Dynamics, Vol. 88, KaUay N. (Ed.), Marcel Dekker, New York. 

H. P6z6rat and J. M6ring, Recherches sur la position des cations 6changeables et de I eau dans les montmorillonites, Compt. Rend. Acad. Sci (Paris) 265 529 (1967). R. K. Hawkins and P. A. Egelstaff, Interfacial water structure in montmorillonite from neutron diffraction experiments, Clays and Clay Minerals 2H PM)). 

The interfacial water structure at a metal electrode has also been considered in terms of the hydrophobic/hydrophilic nature of the metal as commonly determined through contact angle measurements. Hydrophilic electrodes that are readily wetted by water result in water structuring at the electrode surface that is believed to be different from that which occurs at more hydrophobic electrodes. The history of an electrode can result in divergent results with respect to the hydrophilic properties of its surface. Gold has recently been shown to be hydrophilic when the surface is clean.Exposure to ambient laboratory atmosphere alters this property and this may account for conflicting reports which have addressed this question. 

Metal oxide semiconductor electrodes also differ from bare metal electrodes with respect to interactions with water. Interfacial region in which water properties differ significantly from those found in the bulk phase is generally more extensive than for metal electrodes. Significant interfacial water structure can extend to several molecular layers from oxide surfaces. Also, the inner monolayer of water can be rotationally immobile due to hydrogen bonding, a feature that is absent at pure metal surfaces. 

Keywords Cationic surfactants, reverse aggregate of Interfacial water, structure of Reverse micelles Water-in-oil microemulsions... 

The interfacial water structure at different alkali halide salt surfaces can be further studied from the water dipole moment distributions at the crystal surface. Figure 4.6 describes the water dipole... 

Previous research regarding soluble salt flotation has suggested that interfacial water structure may play a significant role in surfactant adsorption (Hancer et al. 2001 Veeramasuneni et al. 1997). For example, even in the absence of collectors, structure-breaking salts such as KCl and KI have been shown to have a hydrophobic surface character, whereas structure-making salts are completely wetted by their saturated brine. Table 4.7 is the summary of contact angles for saturated brines at the surfaces of selected alkali halide salt surfaces in the absence of a surfactant (Hancer et al. 2001). 

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