Fatty Acid/Base Interactions in Model Systems. A Langmuir Film, Surface Tension, and Calorimetric Study

Langmuir ◽  
1994 ◽  
Vol 10 (7) ◽  
pp. 2262-2266 ◽  
Author(s):  
Hege Ebeltoft ◽  
Johan Sjoeblom ◽  
Jens Olav Saeten ◽  
Gerd Olofsson
Keyword(s):  
Surface Tension ◽  
Fatty Acid ◽  
Film Surface ◽  
Model Systems ◽  
Calorimetric Study ◽  
Acid Base ◽  
Langmuir Film

Physical properties of systems of interest to the edible oil industry: Viscosities and densities of model systems formed by (triacylglycerol + fatty acid + solvent)

2017 ◽  
Vol 113 ◽  
pp. 198-212 ◽  
Author(s):  
Priscila M. Florido ◽  
Deborah P.S. Lobo ◽  
Camila N. Pinto ◽  
Christianne E.C. Rodrigues ◽  
Cintia B. Gonçalves
Keyword(s):  
Fatty Acid ◽  
Physical Properties ◽  
Oil Industry ◽  
Edible Oil ◽  
Model Systems

scholarly journals SFTA3 – a novel surfactant protein of the ocular surface and its role in corneal wound healing and tear film surface tension

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Martin Schicht ◽  
Fabian Garreis ◽  
Nadine Hartjen ◽  
Stephanie Beileke ◽  
Christina Jacobi ◽  
...  
Keyword(s):  
Surface Tension ◽  
Wound Healing ◽  
Ocular Surface ◽  
Tear Film ◽  
Film Surface ◽  
Surfactant Protein ◽  
Corneal Wound Healing ◽  
Corneal Wound

Spectrophotometric study of the effect of sodium dodecyl sulphate on the acid-base behaviour of 4-(2-pyridylazo)-resorcinol

1991 ◽  
Vol 56 (4) ◽  
pp. 785-795 ◽  
Author(s):  
Jiří Bílý ◽  
Ludmila Čermáková ◽  
Jiří Knapp
Keyword(s):  
Surface Tension ◽  
Critical Micelle Concentration ◽  
Sodium Dodecyl Sulphate ◽  
Azo Dye ◽  
Dissociation Constants ◽  
Sodium Dodecyl ◽  
Spectrophotometric Study ◽  
Acid Base ◽  
Strong Electrolytes ◽  
The Given

The values of the apparent dissociation constants of the azo dye 4-(2-pyridylazo)-resorcinol (PAR) have been found in the presence of sub- and supercritical concentrations of the anionogenic tenside sodium dodecyl sulphate (SDS) and the effects of the strong electrolytes NaCl and NaNO3 were also evaluated. In both electrolytes, the pKan values initially are independent of the SDS concentration and then increase. Spectrophotometric and surface tension measurements were employed to determine the critical micelle concentration (cmc) of SDS alone and in the presence of PAR and the given electrolytes. The determined cmc values were in the range 0.20–3.02 mmol l-1 and dependent on the type and concentration of the particular additive.

scholarly journals Fabrication of 2D Hetero-Complexes With Nucleic-Acid-Base Adenine and Fatty-Acid Stearic Acid at Liquid/Solid Interface

2019 ◽  
Vol 7 ◽  
Author(s):  
Huiling Zhao ◽  
Qian Yang ◽  
Zegao Wang ◽  
Hang Zhao ◽  
Bo Liu ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Nucleic Acid ◽  
Stearic Acid ◽  
Acid Base ◽  
Solid Interface ◽  
Nucleic Acid Base

scholarly journals Direct observation of anisotropic growth of water films on minerals driven by defects and surface tension

2020 ◽  
Vol 6 (30) ◽  
pp. eaaz9708 ◽  
Author(s):  
Sibel Ebru Yalcin ◽  
Benjamin A. Legg ◽  
Merve Yeşilbaş ◽  
Nikhil S. Malvankar ◽  
Jean-François Boily
Keyword(s):  
Surface Tension ◽  
Water Vapor ◽  
Film Growth ◽  
High Surface ◽  
Film Surface ◽  
Water Film ◽  
Element Cycling ◽  
Water Films ◽  
Nanoscale Topography ◽  
Underlying Mechanisms

Knowledge of the occurrences of water films on minerals is critical for global biogeochemical and atmospheric processes, including element cycling and ice nucleation. The underlying mechanisms controlling water film growth are, however, misunderstood. Using infrared nanospectroscopy, amplitude-modulated atomic force microscopy, and molecular simulations, we show how water films grow from water vapor on hydrophilic mineral nanoparticles. We imaged films with up to four water layers that grow anisotropically over a single face. Growth usually begins from the near edges of a face where defects preferentially capture water vapor. Thicker films produced by condensation cooling completely engulf nanoparticles and form thicker menisci over defects. The high surface tension of water smooths film surfaces and produces films of inhomogeneous thickness. Nanoscale topography and film surface energy thereby control anisotropic distributions and thicknesses of water films on hydrophilic mineral nanoparticles.

Effects of Non-Ionic Surfactant on the Deep Temperature Flotation Agents of Hematite

2012 ◽  
Vol 538-541 ◽  
pp. 2354-2357 ◽  
Author(s):  
Xiao Jun Jiang ◽  
Yun Jin Wang ◽  
Hong Bo Xu ◽  
Jian Wang
Keyword(s):  
Surface Tension ◽  
Fatty Acid ◽  
Polyethylene Glycol ◽  
Sodium Oleate ◽  
Ionic Surfactant ◽  
Low Carbon ◽  
Optimal Composition ◽  
Different Temperatures ◽  
Deep Temperature ◽  
Tension Methods

This investigation involves the effects of non-ionic surfactant materials on the industrial sodium oleate, sodium naphthenate and their mixtures at different temperatures by the surface tension methods. The effects on the critical micelle concentration (CMC) of sodium oleate were assessed by the Toween 80(T-80) presence, polyethylene glycol, polyether and other non-ionic surfactant. T-80 was proved more effective than other non-surfactant in increasing the sodium oleate CMC at same concentration. Using the optimal composition of sodium fatty acid and the surfactant can reduce the temperature of separation hematite from 43°C to 23°C, achieve the purpose of low carbon and energy saving.

Estimation of surface tension of fatty acid methyl ester and biodiesel at different temperatures

Fuel ◽  
2014 ◽  
Vol 126 ◽  
pp. 162-168 ◽  
Author(s):  
Suriya Phankosol ◽  
Kaokanya Sudaprasert ◽  
Supathra Lilitchan ◽  
Kornkanok Aryusuk ◽  
Kanit Krisnangkura
Keyword(s):  
Surface Tension ◽  
Fatty Acid ◽  
Methyl Ester ◽  
Fatty Acid Methyl Ester ◽  
Acid Methyl Ester ◽  
Acid Methyl ◽  
Different Temperatures
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