scholarly journals Linear Free Energy Relationship Correlation of the Distribution of Solutes between Water and Sodium Dodecyl Sulfate (SDS) Micelles and between Gas and SDS Micelles

2007 ◽  
Vol 47 (5) ◽  
pp. 1808-1817 ◽  
Author(s):  
Laura Sprunger ◽  
William E. Acree, ◽  
Michael H. Abraham
Keyword(s):  
Free Energy ◽  
Sodium Dodecyl Sulfate ◽  
Sodium Dodecyl ◽  
Linear Free Energy Relationship ◽  
Linear Free Energy ◽  
Sds Micelles ◽  
Dodecyl Sulfate

scholarly journals Physicochemical Studies on the Interaction between Sodium Dodecyl Sulfate and Methylene Blue in Methanol-Water Mixed Solvent Media

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Pawan Shah ◽  
Nilam Jha ◽  
Ajaya Bhattarai
Keyword(s):  
Methylene Blue ◽  
Free Energy ◽  
Sodium Dodecyl Sulfate ◽  
Mixed Solvent ◽  
Volume Fraction ◽  
Sodium Dodecyl ◽  
Standard Free Energy ◽  
Solvent System ◽  
Volume Fractions ◽  
Dodecyl Sulfate

The surface activity and the process of micellization of sodium dodecyl sulfate (SDS) with methylene blue (MB) in a methanol-water mixed solvent system were investigated by tensiometry and conductometry at 298.15 K. The measurements of surface tension and conductivity of SDS-MB complex were carried up to 0.3 volume fractions of methanol because the resulting complex appeared turbid above 0.3 volume fractions of methanol. The critical micelle concentration (CMC) of the SDS was determined from both tensiometry and conductometry. The CMC of SDS increased with the increasing volume fraction of methanol due to the inclusion of methanol in the micelles and decreased in the presence of methylene blue due to the reduction of electrostatic repulsion within the anionic moiety of SDS by the positive charge of the added dye. Different properties like surface excess concentration Γ max , minimum surface area A min , Gibbs free energy of micellization Δ G m o , surface pressure ( π CMC ), efficiency of a surfactant ( p C 20 ), packing parameter P , and standard free energy interfacial adsorption Δ G ads o of SDS in the absence/presence of MB were calculated. On the basis of Δ G m o values, it was noticed that the increasing volume fraction of methanol disfavors the micellization of SDS, while the presence of MB increased the efficiency of SDS making the micellization process more spontaneous.

Photochemistry of nabumetone in aqueous solution of sodium dodecyl sulfate (SDS) micelles

2020 ◽  
Vol 319 ◽  
pp. 114093 ◽  
Author(s):  
Margarita Valero ◽  
Peter P. Levin ◽  
Natalya B. Sultimova ◽  
Judith E. Houston
Keyword(s):  
Aqueous Solution ◽  
Sodium Dodecyl Sulfate ◽  
Sodium Dodecyl ◽  
Sds Micelles ◽  
Dodecyl Sulfate
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