Physico-chemical studies of oppositely charged protein–surfactant system in aqueous solutions: Sodium dodecyl sulphate (SDS)–lysozyme

2013 ◽  
Vol 337 ◽  
pp. 39-46 ◽  
Author(s):  
S. Chauhan ◽  
M.S. Chauhan ◽  
P. Sharma ◽  
D.S. Rana ◽  
Ahmad Umar
Keyword(s):  
Aqueous Solutions ◽  
Sodium Dodecyl Sulphate ◽  
Sodium Dodecyl ◽  
Surfactant System ◽  
Physico Chemical ◽  
Chemical Studies ◽  
Oppositely Charged

scholarly journals Electrokinetic Properties of Cassiterite and Quartz Particles in the Presence of Cationic, Anionic and Non-ionogenic Surfactants

1994 ◽  
Vol 11 (3) ◽  
pp. 161-174 ◽  
Author(s):  
Fouad Taha ◽  
M.B. Saleh ◽  
K.M.E. Attyia ◽  
M.M.R. Khalaf
Keyword(s):  
Aqueous Solutions ◽  
Surface Charge ◽  
Sodium Dodecyl Sulphate ◽  
Primary Amine ◽  
Negative Charge ◽  
Sodium Dodecyl ◽  
Amine Hydrochloride ◽  
Solution Properties ◽  
Zeta Potentials ◽  
Isoelectric Points

The surface charge properties of cassiterite and quartz particles in primary amine hydrochloride, sodium oleate, sodium dodecyl sulphate, phenyl disodium orthophosphate, 4-nitrophenyl disodium orthophosphate and starch solutions have been monitored using particle microelectrophoresis. The zeta potentials of the oxides and their isoelectric points (IEPs) were determined as a function of pH in the presence of different surfactant concentrations. In general, cassiterite and quartz particles acquired a negative charge in the various aqueous solutions and were dramatically influenced by both pH and the presence of surfactants. The magnitude of the surface charge varied considerably and could adopt positive or negative values. The IEPs also varied depending on the solution properties.

Effect of Added Brine on the Physico Chemical Studies of Sodium Dodecyl Sulfate and Aqueous Gelatin

2011 ◽  
Author(s):  
Jinu George ◽  
Lisa Sreejith ◽  
P. Predeep ◽  
Mrinal Thakur ◽  
M. K. Ravi Varma
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Sodium Dodecyl ◽  
Physico Chemical ◽  
Dodecyl Sulfate ◽  
Chemical Studies

scholarly journals Bubble Rise Velocity and Surface Mobility in Aqueous Solutions of Sodium Dodecyl Sulphate and n-Propanol

Minerals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 743
Author(s):  
Pavlína Basařová ◽  
Yuliya Kryvel ◽  
Jakub Crha
Keyword(s):  
Surface Tension ◽  
Aqueous Solutions ◽  
Sodium Dodecyl Sulphate ◽  
Sodium Dodecyl ◽  
Bubble Surface ◽  
Rise Velocity ◽  
Bubble Rise ◽  
Spherical Bubble ◽  
Surface Mobility ◽  
Bubble Rise Velocity

Aqueous solutions of simple alcohols exhibit many anomalies, one of which is a change in the mobility of the bubble surface. This work aimed to determine the effect of the presence of another surface-active agent on bubble rise velocity and bubble surface mobility. The motion of the spherical bubble in an aqueous solution of n-propanol and sodium dodecyl sulphate (SDS) was monitored by a high-speed camera. At low alcohol concentrations (xP < 0.01), both the propanol and SDS molecules behaved as surfactants, the surface tension decreased and the bubble surface was immobile. The effect of the SDS diminished with increasing alcohol concentrations. In solutions with a high propanol content (xP > 0.1), the SDS molecules did not adsorb to the phase interface and thus, the surface tension of the solution was not reduced with the addition of SDS. Due to the rapid desorption of propanol molecules from the bottom of the bubble, a surface tension gradient was not formed. The drag coefficient can be calculated using formulas for the mobile surface of a spherical bubble.

Interaction of Sodium Dodecyl Sulphate and Dimethyl-Dodecyl-Amine Oxide in Aqueous Solutions

1989 ◽  
pp. 431-441 ◽  
Author(s):  
J. Sánchez Leal ◽  
X. Domingo ◽  
F. Comelles ◽  
M. T. García ◽  
A. Casaña
Keyword(s):  
Aqueous Solutions ◽  
Sodium Dodecyl Sulphate ◽  
Amine Oxide ◽  
Sodium Dodecyl ◽  
Dodecyl Amine
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