X-ray reflectivity of a polymer monolayer at the water/vapor interface

1991 ◽  
Vol 95 (17) ◽  
pp. 6628-6632 ◽  
Author(s):  
M. L. Schlossman ◽  
D. K. Schwartz ◽  
E. H. Kawamoto ◽  
G. J. Kellogg ◽  
P. S. Pershan ◽  
...  
Keyword(s):  
Water Vapor ◽  
Vapor Interface ◽  
X Ray

scholarly journals Thermal diffuse x-ray-scattering studies of the water-vapor interface

1990 ◽  
Vol 41 (10) ◽  
pp. 5687-5690 ◽  
Author(s):  
D. K. Schwartz ◽  
M. L. Schlossman ◽  
E. H. Kawamoto ◽  
G. J. Kellogg ◽  
P. S. Pershan ◽  
...  
Keyword(s):  
Water Vapor ◽  
Vapor Interface ◽  
X Ray ◽  
X Ray Scattering ◽  
Thermal Diffuse ◽  
Ray Scattering

scholarly journals Surface behavior of amphiphiles in aqueous solution: a comparison between different pentanol isomers

2015 ◽  
Vol 17 (21) ◽  
pp. 14036-14044 ◽  
Author(s):  
M.-M. Walz ◽  
C. Caleman ◽  
J. Werner ◽  
V. Ekholm ◽  
D. Lundberg ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Aqueous Solution ◽  
Water Vapor ◽  
Surface Structure ◽  
Photoelectron Spectroscopy ◽  
Md Simulation ◽  
Molecular Level ◽  
Vapor Interface ◽  
X Ray ◽  
Surface Behavior

Molecular-level understanding of concentration-dependent changes in the surface structure of different amphiphilic isomers at the water–vapor interface was gained by molecular dynamics (MD) simulation and X-ray photoelectron spectroscopy (XPS).

Molecular Sinkers: X-ray Photoemission and Atomistic Simulations of Benzoic Acid and Benzoate at the Aqueous Solution/Vapor Interface

2012 ◽  
Vol 116 (43) ◽  
pp. 13017-13023 ◽  
Author(s):  
Niklas Ottosson ◽  
Anastasia O. Romanova ◽  
Johan Söderström ◽  
Olle Björneholm ◽  
Gunnar Öhrwall ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Benzoic Acid ◽  
Atomistic Simulations ◽  
Vapor Interface ◽  
X Ray

scholarly journals Succinic acid in aqueous solution: connecting microscopic surface composition and macroscopic surface tension

2014 ◽  
Vol 16 (39) ◽  
pp. 21486-21495 ◽  
Author(s):  
Josephina Werner ◽  
Jan Julin ◽  
Maryam Dalirian ◽  
Nønne L. Prisle ◽  
Gunnar Öhrwall ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Surface Tension ◽  
Succinic Acid ◽  
Photoelectron Spectroscopy ◽  
Surface Composition ◽  
Md Simulations ◽  
Vapor Interface ◽  
X Ray ◽  
Ph Values ◽  
Microscopic Surface

The water–vapor interface of aqueous solutions of succinic acid, where pH values and bulk concentrations were varied, has been studied using surface sensitive X-ray photoelectron spectroscopy (XPS) and molecular dynamics (MD) simulations.

scholarly journals Effect of Both the Phase Composition and Modification Methods on Structural-Adsorption Parameters of Dispersed Silicas

2018 ◽  
Vol 3 (1) ◽  
pp. 1 ◽  
Author(s):  
Tatyana Rakitskaya ◽  
Tatyana Kiose ◽  
Kristina Golubchik ◽  
Viacheslav Baumer ◽  
Vitaliya Volkova
Keyword(s):  
Water Vapor ◽  
Water Vapor Adsorption ◽  
X Ray Diffraction ◽  
Adsorption Parameters ◽  
X Ray ◽  
Vapor Adsorption ◽  
Crystallite Sizes ◽  
Desorption Isotherms ◽  
Adsorption Desorption ◽  
Modified Forms

Tripoli from two Ukrainian deposits was studied in its natural and modified forms. The investigation of natural and modified tripoli involves the identification of their phase compositions through X-ray diffraction and the analysis of their water vapor adsorption-desorption isotherms. The obtained results are evidence of changes in the structural-adsorption parameters of tripoli as a result of modification. Their treatment in boiling water or acid causes apparent alterations of contents of the main phases and sizes of their crystallites, whereas their calcination causes not only the dehydroxylation of surfaces and the agglomeration of phases, but even phase transformation in the case of carbonate tripoli. After analyzing water vapor adsorption-desorption isotherms of natural and modified tripolis, some correlations between their adsorption parameters, phase compositions, main phase contents and crystallite sizes have been found.

scholarly journals Electromechanics of the liquid water vapour interface

2020 ◽  
Vol 22 (19) ◽  
pp. 10676-10686 ◽  
Author(s):  
Chao Zhang ◽  
Michiel Sprik
Keyword(s):  
Water Vapor ◽  
Stress Tensor ◽  
Water Vapour ◽  
Surface Potential ◽  
Liquid Water ◽  
Maxwell Stress ◽  
Capillary Effect ◽  
Vapor Interface ◽  
Maxwell Stress Tensor ◽  
Anisotropic Stress

The response of the anisotropic stress at the liquid water vapor interface to a finite electric suggests that the surface potential of water can be seen as an electro-capillary effect coupled to the Maxwell stress tensor.

THE ADSORPTION OF ARGON ON SOME VACUUM DEHYDRATED SALTS

1955 ◽  
Vol 33 (2) ◽  
pp. 286-297 ◽  
Author(s):  
H. W. Quinn ◽  
R. W. Missen ◽  
G. B. Frost
Keyword(s):  
Water Vapor ◽  
Crystalline State ◽  
Capillary Structure ◽  
X Ray ◽  
Effect Of Water ◽  
Probable Distribution ◽  
Vacuum Dehydration ◽  
Low Pressures ◽  
Amorphous Character

Isotherms for the adsorption of argon on amorphous products formed by the vacuum dehydration of several hydrated salts have been determined. These have shown that the adsorption is physical and that dehydration results in the formation of products of large capillary volume. The probable distribution of capillary diameters has been estimated and correlated with the effect of water vapor at low pressures in catalyzing the crystallization of the amorphous intermediates. Consideration of these findings, in the light of data for the heats of transition from the amorphous to the crystalline state, suggests that the X-ray amorphous character is not entirely due to the capillary structure but that other changes occur. The possible nature of these is discussed.

scholarly journals Two Different Scenarios for the Equilibration of Polycation—Anionic Solutions at Water–Vapor Interfaces

Coatings ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 438 ◽  
Author(s):  
Eduardo Guzmán ◽  
Laura Fernández-Peña ◽  
Andrew Akanno ◽  
Sara Llamas ◽  
Francisco Ortega ◽  
...  
Keyword(s):  
Water Vapor ◽  
Vapor Interface ◽  
Interfacial Layers ◽  
Sodium Lauryl Ether Sulfate ◽  
Complex Interactions ◽  
Surfactant Interactions ◽  
Physico Chemical ◽  
Lauryl Ether ◽  
Shed Light ◽  
Dilational Rheology

The assembly in solution of the cationic polymer poly(diallyldimethylammonium chloride) (PDADMAC) and two different anionic surfactants, sodium lauryl ether sulfate (SLES) and sodium N-lauroyl-N-methyltaurate (SLMT), has been studied. Additionally, the adsorption of the formed complexes at the water–vapor interface have been measured to try to shed light on the complex physico-chemical behavior of these systems under conditions close to that used in commercial products. The results show that, independently of the type of surfactant, polyelectrolyte-surfactant interactions lead to the formation of kinetically trapped aggregates in solution. Such aggregates drive the solution to phase separation, even though the complexes should remain undercharged along the whole range of explored compositions. Despite the similarities in the bulk behavior, the equilibration of the interfacial layers formed upon adsorption of kinetically trapped aggregates at the water–vapor interface follows different mechanisms. This was pointed out by surface tension and interfacial dilational rheology measurements, which showed different equilibration mechanisms of the interfacial layer depending on the nature of the surfactant: (i) formation layers with intact aggregates in the PDADMAC-SLMT system, and (ii) dissociation and spreading of kinetically trapped aggregates after their incorporation at the fluid interface for the PDADMAC-SLES one. This evidences the critical impact of the chemical nature of the surfactant in the interfacial properties of these systems. It is expected that this work may contribute to the understanding of the complex interactions involved in this type of system to exploit its behavior for technological purposes.

Sign in / Sign up

Export Citation Format

Share Document