Results 171 to 180 of about 128,898 (200)
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Solvent-induced interactions: Hydrophobic and hydrophilic phenomena
The Journal of Chemical Physics, 1989The solvent-induced interactions between two kinds of molecules (or groups) are examined from the point of view of the solvation free energies of a pair of interacting molecules (or groups). The first interaction is that between two simple nonpolar solutes (or groups) in water and is known as the hydrophobic interaction.
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Geochimica et Cosmochimica Acta, 1994
The extent and kinetics of adsorption of a peat-derived humic substance (HS) onto a hydrophobic surface (mercury electrode) and a polar mineral surface (γ-Al2O3 colloids) was studied. Adsorption on the Hg-electrode was assessed by directly measuring the change of the double layer capacitance caused by the adsorption of HS on the electrode surface ...
M. Ochs, B. Ćosović, W. Stumm
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The extent and kinetics of adsorption of a peat-derived humic substance (HS) onto a hydrophobic surface (mercury electrode) and a polar mineral surface (γ-Al2O3 colloids) was studied. Adsorption on the Hg-electrode was assessed by directly measuring the change of the double layer capacitance caused by the adsorption of HS on the electrode surface ...
M. Ochs, B. Ćosović, W. Stumm
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Langmuir, 2010
Interaction force measurements were performed for a silica-silica hydrophilic system and for a silanated silica-silanated silica hydrophobic system using the atomic force microscopy colloidal probe technique. The influence of the solution composition on interaction forces was investigated.
Lukasz, Hupka +2 more
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Interaction force measurements were performed for a silica-silica hydrophilic system and for a silanated silica-silanated silica hydrophobic system using the atomic force microscopy colloidal probe technique. The influence of the solution composition on interaction forces was investigated.
Lukasz, Hupka +2 more
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The Journal of Physical Chemistry B, 2008
Understanding the interactions of nanoparticles (NPs) with biological system, especially interactions with cell membranes, is critical for the rational design of nanocarrier agents and drug delivery systems. Here, we have performed coarse-grained molecular dynamics simulations aimed at the effect of hydrophilic/hydrophobic properties of nanoparticles ...
Yang, Li, Xin, Chen, Ning, Gu
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Understanding the interactions of nanoparticles (NPs) with biological system, especially interactions with cell membranes, is critical for the rational design of nanocarrier agents and drug delivery systems. Here, we have performed coarse-grained molecular dynamics simulations aimed at the effect of hydrophilic/hydrophobic properties of nanoparticles ...
Yang, Li, Xin, Chen, Ning, Gu
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Langmuir, 2009
A method allowing the evaluation of the solvophilic/solvophobic character of polyelectrolytes from their conformation in solution is discussed. Analyzed systems are salt-free aqueous solutions of natural copolysaccharides with controlled chemical structures. Small-angle X-ray scattering diagrams revealed their conformation by the "polyelectrolyte peak".
Popa-Nita, Simina +3 more
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A method allowing the evaluation of the solvophilic/solvophobic character of polyelectrolytes from their conformation in solution is discussed. Analyzed systems are salt-free aqueous solutions of natural copolysaccharides with controlled chemical structures. Small-angle X-ray scattering diagrams revealed their conformation by the "polyelectrolyte peak".
Popa-Nita, Simina +3 more
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Langmuir, 2011
Superhydrophobic surfaces based on polydimethyl siloxane (PDMS) were fabricated using a 50:50 PDMS-poly(ethylene glycol) (PEG) blend. PDMS was mixed with PEG, and incomplete phase separation yielded a hierarchic structure. The phase-separated mixture was annealed at a temperature close to the crystallization temperature of the PEG.
Georgios, Polizos +6 more
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Superhydrophobic surfaces based on polydimethyl siloxane (PDMS) were fabricated using a 50:50 PDMS-poly(ethylene glycol) (PEG) blend. PDMS was mixed with PEG, and incomplete phase separation yielded a hierarchic structure. The phase-separated mixture was annealed at a temperature close to the crystallization temperature of the PEG.
Georgios, Polizos +6 more
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Specific Ion Effects on the Interaction of Hydrophobic and Hydrophilic Self-Assembled Monolayers
Langmuir, 2018Interactions between mineral surfaces and organic molecules are fundamental to life processes. The presence of cations in natural environments can change the behavior of organic compounds and thus alter the mineral-organic interfaces. We investigated the influence of Na+, Mg2+, Ca2+, Sr2+, and Ba2+ on the interaction between two models, self-assembled ...
T. Rios-Carvajal +4 more
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ChemPhysChem, 2005
AbstractThe interaction of water with alkanethiolate chains is studied from first principles. A detailed analysis is performed by optimizing the structure of small water clusters, one‐dimensional water chains, and ordered and disordered thin water layers adsorbed on hydroxyl(OH)‐ and methyl(CH3)‐terminated alkanethiol monolayers.
SILVESTRELLI, PIER LUIGI +5 more
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AbstractThe interaction of water with alkanethiolate chains is studied from first principles. A detailed analysis is performed by optimizing the structure of small water clusters, one‐dimensional water chains, and ordered and disordered thin water layers adsorbed on hydroxyl(OH)‐ and methyl(CH3)‐terminated alkanethiol monolayers.
SILVESTRELLI, PIER LUIGI +5 more
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Interaction of water molecules with hydrophilic and hydrophobic surfaces of colloid particles
Journal of Water Chemistry and Technology, 2015The hydrophobicity of talc basal surface and the hydrophilicity of silica gel surface have been considered. Ab initio calculations of energy and geometry of microclusters formed by water molecules on active centers of ideal basal surface of talc and silica gel surface were carried out.
Yu. I. Tarasevich, E. V. Aksenenko
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Pure and Applied Chemistry, 2015
Abstract Hydrophilicity and hydrophobicity are among the most important concepts in surface chemistry. Samuel and co-workers reported the measure of interactive forces between water and 20 different surfaces using the microbalance technique.
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Abstract Hydrophilicity and hydrophobicity are among the most important concepts in surface chemistry. Samuel and co-workers reported the measure of interactive forces between water and 20 different surfaces using the microbalance technique.
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