scholarly journals Interfacial properties of lipid sponge-like nanoparticles and the role of stabilizer on particle structure and surface interactions

Soft Matter ◽  
2019 ◽  
Vol 15 (10) ◽  
pp. 2178-2189 ◽  
Author(s):  
Maria Valldeperas ◽  
Aleksandra P. Dabkowska ◽  
Gunnar K. Pálsson ◽  
Sarah Rogers ◽  
Najet Mahmoudi ◽  
...  
Keyword(s):  
Phase Structure ◽  
Liquid Crystalline ◽  
Particle Surface ◽  
Interfacial Properties ◽  
Surface Interactions ◽  
Crystalline Particle ◽  
Particle Structure ◽  
Sponge Phase

Stabilizer P80 concentrated to lipid liquid crystalline particle surface, but contributes also to the inner sponge phase structure. Particles spread on surfaces to form bilayers.

Role of electronic particle-surface interactions during the sputter degradation of polymers

1991 ◽  
Vol 63 (6) ◽  
pp. 561-568 ◽  
Author(s):  
Graham J. Leggett ◽  
John C. Vickerman
Keyword(s):  
Particle Surface ◽  
Surface Interactions

Role of Compatibilization in Polymer Nanocomposites

2009 ◽  
Vol 82 (3) ◽  
pp. 340-368 ◽  
Author(s):  
Robert D. Kroshefsky ◽  
Jack L. Price ◽  
Duryodhan Mangaraj
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Blends ◽  
Polymer Nanocomposites ◽  
Particle Surface ◽  
Surface Interactions ◽  
Polymeric Nanocomposites ◽  
Matrix Resin ◽  
Basic Principles ◽  
Improved Performance

Abstract Polymeric nanocomposites based on nanoclay, nanosilica, carbon nanotubes, and ceramic or mineral nanoparticles have been developed for a variety of applications. The large surface-to-mass ratios of these particles require good adsorption of the polymeric material on the particle surface to provide the adhesion levels between the filler and matrix resin necessary for improved performance. We review the basic principles underlying these surface interactions and their application in the preparation of a variety of these nanocomposites, as well as in explaining their performance. We demonstrate that the principles underlying the compatibilization of polymer blends and alloys can be successfully used to design nanocomposites and understand their performance.

Nano ellipsoids at the fluid–fluid interface: effect of surface charge on adsorption, buckling and emulsification

2016 ◽  
Vol 186 ◽  
pp. 419-434 ◽  
Author(s):  
Venkateshwar Rao Dugyala ◽  
Thiriveni G. Anjali ◽  
Siliveru Upendar ◽  
Ethayaraja Mani ◽  
Madivala G. Basavaraj
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Surface Charge Density ◽  
Particle Surface ◽  
Interfacial Properties ◽  
Fluid Interfaces ◽  
Particle Interactions ◽  
Kinetics Of Adsorption ◽  
Emulsion Drops

In this contribution, we discuss the role of surface charge on the adsorption of shape anisotropic particles to fluid–fluid interfaces in the context of their application in particle-stabilized emulsions. Starting with a pendent aqueous drop containing nano-ellipsoids of known surface charge density suspended in an oil medium, we study the kinetics of adsorption of the ellipsoids to the water–decane interface using pendant drop tensiometry. The interfacial tension of the drop is recorded as a function of time by analyzing the shape of the drop. We show that the particles that are weakly charged readily adsorb to the water–decane interface and the adsorption behavior is influenced by the particle surface charge density. Furthermore, as the area available for the particles deposited at the interface is reduced, the interface populated with self-assembled ellipsoids shows wrinkles indicating buckling of the particle-laden interface under compression. However, the buckling is not observed if nano-ellipsoids are highly charged confirming that the particles do not adsorb to the interface when they are highly charged. This suggests that in several examples where the particles at interfaces concept is exploited, the repulsive energy barrier due to the particle surface charge plays a key role in the adsorption of particles to the interfaces. However, once the particles are adsorbed, the interfacial properties of the monolayer depend on the particle–particle interactions. Thus a combination of these interactions determines the concentration of particles at the interface, their microstructure and interfacial properties. The effect of these interactions on the quantity and size of the emulsion drops stabilized by ellipsoidal particles is also explored.

Effect of cluster-gradient architecture of nanostructured topocomposites on features of tribointeraction with heterophased material

2020 ◽  
pp. 130-135
Author(s):  
D.N. Korotaev ◽  
K.N. Poleshchenko ◽  
E.N. Eremin ◽  
E.E. Tarasov
Keyword(s):  
Wear Resistance ◽  
Titanium Alloy ◽  
Energy Dissipation ◽  
Phase Structure ◽  
Diffusion Processes ◽  
Structural Phase ◽  
High Wear Resistance ◽  
Wear Characteristics ◽  
And Diffusion

The wear resistance and wear characteristics of cluster-gradient architecture (CGA) nanostructured topocomposites are studied. The specifics of tribocontact interaction under microcutting conditions is considered. The reasons for retention of high wear resistance of this class of nanostructured topocomposites are studied. The mechanisms of energy dissipation from the tribocontact zone, due to the nanogeometry and the structural-phase structure of CGA topocomposites are analyzed. The role of triboactivated deformation and diffusion processes in providing increased wear resistance of carbide-based topocomposites is shown. They are tested under the conditions of blade processing of heat-resistant titanium alloy.

Anti-fouling nano-Ag/SiO2 ormosil treatments for building materials: The role of cell-surface interactions on toxicity and bioreceptivity

2021 ◽  
Vol 153 ◽  
pp. 106120
Author(s):  
Marcia Domínguez ◽  
Rafael Zarzuela ◽  
Ignacio Moreno-Garrido ◽  
María Carbú ◽  
Jesús M. Cantoral ◽  
...  
Keyword(s):  
Cell Surface ◽  
Building Materials ◽  
Surface Interactions ◽  
Cell Surface Interactions
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