Submicellar aggregates in aqueous sodium dodecyl sulphate solutions: Investigations by dynamic light scattering and water penetration through porous media

2016 ◽  
Vol 506 ◽  
pp. 331-337 ◽  
Author(s):  
Krupali Mehta ◽  
Bhavesh Bharatiya ◽  
Amit Parekh ◽  
Sandip V. Bhatt ◽  
Vidhi Shah ◽  
...  
Keyword(s):  
Porous Media ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Sodium Dodecyl Sulphate ◽  
Sodium Dodecyl ◽  
Water Penetration ◽  
Aqueous Sodium

scholarly journals Co-solvent Effect on Spontaneous Formation of Large Nanoscale Structures in Catanionic Mixtures in the Anionic-Rich Region

2019 ◽  
Vol 49 (1) ◽  
pp. 16-33 ◽  
Author(s):  
Farhad Golmohammadi ◽  
Masoud Amiri ◽  
Hussein Gharibi ◽  
Ali Yousefi ◽  
Meysam Safari
Keyword(s):  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Zeta Potential ◽  
Volume Fraction ◽  
Sodium Dodecyl ◽  
Nanoscale Structures ◽  
Transmission Electron ◽  
Air Liquid Interface ◽  
Catanionic Mixtures ◽  
Cosolvent Effects

AbstractThe aggregation behavior was investigated in mixtures of sodium dodecyl sulfate (SDS) and cetyltrimethylammonium bromide (CTAB) (anionic-rich catanionic) solutions. The study was conducted in solutions of water–ethylene glycol (EG) by means of surface tension, conductometry, cyclic voltammetry, zeta potential measurements, transmission electron microscopy (TEM) and dynamic light scattering (DLS) techniques. The degree of counterion dissociation (α), critical micelle concentration, aggregation numbers, interfacial properties, interparticle interaction parameters, and morphology of aggregates were determined. Based on regular solution theory, the cosolvent effects between SDS and CTAB as surfactants were also analyzed for both mixed monolayers at mixed micelles (βM) and the air/liquid interface (βσ). It was shown that the formation of large aggregates occurred in the presence of an excess of anionic surfactant. A phase transition from cylindrical micelles to spherical micelles in the anionic-rich regime was observed with an increase in the EG volume fraction. The inter particle interactions were assessed in terms of cosolvent effects on the micellar surface charge density and the cylindrical-to-spherical morphology change. Zeta potential and size of the aggregates were determined using dynamic light scattering and confirmed the models suggested for the processes taking place in each system.

Sodium dodecyl sulfate (SDS) effect on the thermal stability of oxy-HbGp: Dynamic light scattering (DLS) and small angle X-ray scattering (SAXS) studies

2013 ◽  
Vol 111 ◽  
pp. 561-570 ◽  
Author(s):  
José Wilson P. Carvalho ◽  
Fernanda Rosa Alves ◽  
Tatiana Batista ◽  
Francisco Adriano O. Carvalho ◽  
Patrícia S. Santiago ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Light Scattering ◽  
Sodium Dodecyl Sulfate ◽  
Dynamic Light Scattering ◽  
Small Angle ◽  
Sodium Dodecyl ◽  
X Ray ◽  
X Ray Scattering ◽  
Dodecyl Sulfate ◽  
Thermal Stability Of

Dynamic light scattering study of the interface evolution in porous media

JETP Letters ◽  
2001 ◽  
Vol 74 (4) ◽  
pp. 216-221 ◽  
Author(s):  
D. A. Zimnyakov ◽  
P. V. Zakharov ◽  
V. A. Trifonov ◽  
O. I. Chanilov
Keyword(s):  
Porous Media ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Interface Evolution ◽  
Scattering Study
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