Physicochemical Studies on the Interaction between Sodium Dodecyl Sulfate and Methylene Blue in Methanol-Water Mixed Solvent Media
Joint Authors
Shah, Pawan
Jha, Nilam
Bhattarai, Ajaya
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-12-03
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
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 Γmax, minimum surface area Amin, Gibbs free energy of micellization ΔGmo, surface pressure (πCMC), efficiency of a surfactant (pC20), packing parameter P, and standard free energy interfacial adsorption ΔGadso of SDS in the absence/presence of MB were calculated.
On the basis of ΔGmo 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.
American Psychological Association (APA)
Shah, Pawan& Jha, Nilam& Bhattarai, Ajaya. 2020. Physicochemical Studies on the Interaction between Sodium Dodecyl Sulfate and Methylene Blue in Methanol-Water Mixed Solvent Media. Journal of Chemistry،Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1181867
Modern Language Association (MLA)
Shah, Pawan…[et al.]. Physicochemical Studies on the Interaction between Sodium Dodecyl Sulfate and Methylene Blue in Methanol-Water Mixed Solvent Media. Journal of Chemistry No. 2020 (2020), pp.1-13.
https://search.emarefa.net/detail/BIM-1181867
American Medical Association (AMA)
Shah, Pawan& Jha, Nilam& Bhattarai, Ajaya. Physicochemical Studies on the Interaction between Sodium Dodecyl Sulfate and Methylene Blue in Methanol-Water Mixed Solvent Media. Journal of Chemistry. 2020. Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1181867
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1181867