scholarly journals Accelerated recombination of lophyl radicals and control of the surface tension with amphiphilic lophine dimers

2019 ◽  
Vol 55 (66) ◽  
pp. 9769-9772
Author(s):  
Masaaki Akamatsu ◽  
Kazuki Kobayashi ◽  
Kenichi Sakai ◽  
Hideki Sakai
Keyword(s):  
Aqueous Solution ◽  
Surface Tension ◽  
Interfacial Properties ◽  
Rapid Control ◽  
And Control

The accelerated photoisomerization of amphiphilic lophine dimers enabled rapid control of the interfacial properties of aqueous solution with photoirradiation.

scholarly journals The effect of serum proteins on dynamic interfacial properties of silicone oils in vitrectomized eyes

2018 ◽  
Vol 2 (2) ◽  
pp. 52-57
Author(s):  
Irene Nepita ◽  
Libero Liggieri ◽  
Eva Santini ◽  
Francesca Ravera ◽  
Mario R. Romano ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Surface Tension ◽  
Aqueous Humor ◽  
Serum Proteins ◽  
Silicone Oil ◽  
Interfacial Properties ◽  
Quantitative Information ◽  
Silicone Oils ◽  
Natural Surfactants ◽  
Viscoelastic Modulus

The formation and stability of emulsions in vitrectomized eyes is linked to the properties of the silicone oil-aqueous humor interface, in particular the surface tension. In the presence of natural surfactants, such as serum and plasma, the value of the surface tension is likely to change, but little quantitative information is presently available.To this end, we perform accurate experiments measuring the interfacialproperties of the Siluron 1000 (Fluoron GmbH, Ulm, Germany) silicone oil with an aqueous solution in the presence of endogenous-like proteins. It is found that the surface tension is significantly reduced when physiologically realistic concentrations are used. Moreover, the values obtained for the dilational viscoelastic modulus are compatible with the formation of stable emulsions.

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.

Novel methods of processing cement gel to examine and control microstructure and properties

1983 ◽  
Vol 310 (1511) ◽  
pp. 155-166 ◽  
Keyword(s):  
Surface Tension ◽  
Compressive Strength ◽  
Pore Water ◽  
Diffusion Rate ◽  
Exchange Process ◽  
Hydrated Cement ◽  
Diffusion Rates ◽  
And Control ◽  
Kinetics Of ◽  
Counter Diffusion

The microstructure of the gel produced by hydrating cement is sensitive to the manner in which the original pore water is removed. Exchange of the pore water with a miscible, low surface-tension fluid by a process of counter-diffusion is examined. Diffusion rates in the hydrated cement can be assessed from the kinetics of the exchange process. Evaporation of the low surface-tension fluid from the pores caused less alteration to the microstructure than direct removal of the original pore water. The sensitivity of the microstructure of hydrated cement to normal environmental drying is industrially significant because it is associated with increases in diffusion rates that could affect the durability of concrete. Drying lowered the correlation between diffusion rate and compressive strength. Possible methods of processing the cement gel to make it more resistant to the disruptive effects of drying are discussed.

Exploration of interactions between decyl-β-d-glucopyranoside and bovine serum albumin in aqueous solution

RSC Advances ◽  
2016 ◽  
Vol 6 (24) ◽  
pp. 19700-19706 ◽  
Author(s):  
Gongke Wang ◽  
Huimin Hou ◽  
Ye Chen ◽  
Changling Yan ◽  
Guangyue Bai ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Surface Tension ◽  
Steady State ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Absorption Spectroscopy ◽  
Bovine Serum ◽  
Aqueous Media ◽  
Steady State Fluorescence

The interactions between decyl-β-d-glucopyranoside (DG) and bovine serum albumin (BSA), in aqueous media, were investigated through the use of surface tension, steady-state fluorescence, and UV-vis absorption spectroscopy measurements.

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