scholarly journals Multivalent electrolyte induced surface ordering and solution self-assembly in anionic surfactant mixtures: Sodium dodecyl sulfate and sodium diethylene glycol monododecyl sulfate

2020 ◽  
Vol 565 ◽  
pp. 567-581 ◽  
Author(s):  
Peixun Li ◽  
Zi Wang ◽  
Kun Ma ◽  
Yao Chen ◽  
Zifeng Yan ◽  
...  
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Anionic Surfactant ◽  
Diethylene Glycol ◽  
Self Assembly ◽  
Sodium Dodecyl ◽  
Surfactant Mixtures ◽  
Surface Ordering ◽  
Dodecyl Sulfate

scholarly journals Chitosan/Sodium Dodecyl Sulfate Complexes for Microencapsulation of Vitamin E and Its Release Profile—Understanding the Effect of Anionic Surfactant

2021 ◽  
Vol 15 (1) ◽  
pp. 54
Author(s):  
Jelena Milinković Budinčić ◽  
Lidija Petrović ◽  
Ljiljana Đekić ◽  
Milijana Aleksić ◽  
Jadranka Fraj ◽  
...  
Keyword(s):  
Vitamin E ◽  
Sodium Dodecyl Sulfate ◽  
Anionic Surfactant ◽  
Sodium Dodecyl ◽  
Pharmaceutical Products ◽  
Release Mechanism ◽  
Bioactive Substances ◽  
Water Emulsion ◽  
Dodecyl Sulfate

Microencapsulation of bioactive substances is a common strategy for their protection and release rate control. The use of chitosan (Ch) is particularly promising due to its abundance, biocompatibility, and interaction with anionic surfactants to form complexes of different characteristics with relevance for use in microcapsule wall design. In this study, Ch/sodium dodecyl sulfate (SDS) microcapsules, without and with cross-linking agent (formaldehyde (FA) or glutaraldehyde (GA)), were obtained by the spray drying of vitamin E loaded oil-in-water emulsion. All of the microcapsules had good stability during the drying process. Depending on the composition, their product yield, moisture content, and encapsulation efficiency varied between 11–34%, 1.14–1.62%, and 94–126%, respectively. SEM and FTIR analysis results indicate that SDS as well as cross-linkers significantly affected the microcapsule wall properties. The profiles of in vitro vitamin E release from the investigated microcapsules fit with the Korsmeyer-Peppas model (r2 > 0.9). The chemical structure of the anionic surfactant was found to have a significant effect on the vitamin E release mechanism. Ch/SDS coacervates may build a microcapsule wall without toxic crosslinkers. This enabled the combined diffusion/swelling based release mechanism of the encapsulated lipophilic substance, which can be considered favorable for utilization in food and pharmaceutical products.

scholarly journals Study of Elodea canadensis elimination of Sodium Dodecyl Sulphate and NH4Cl

2021 ◽  
Vol 866 (1) ◽  
pp. 012025
Author(s):  
S E Sergienko ◽  
S S Timofeeva ◽  
A B Kupchinsky ◽  
G Chaneva ◽  
D I Stom ◽  
...  
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Anionic Surfactant ◽  
Sodium Dodecyl Sulphate ◽  
Sodium Dodecyl ◽  
Ammonium Nitrogen ◽  
Elodea Canadensis ◽  
Initial Value ◽  
Dodecyl Sulfate ◽  
Negative Effect ◽  
Wet Weight

Abstract The absorption of an anionic surfactant - sodium dodecyl sulfate (SDS) by a Elodea canadensis was studied. Macrophyte (20 g/L wet weight) reduced the concentration of this surfactant from 2 mg/L by 90% within 2 days. A negative effect of SDS on the elimination of ammonium nitrogen by E. canadensis was shown with its content from 1·10-4 M. Thus, in the presence of 1·10-4 M SDS, E. canadensis reduced the concentration of ammonium nitrogen by 51% of the initial value in 2 days (in the control - without surfactants - 92% of the pollutant was absorbed).

Mixing Behavior of Cationic Hydrotropes with Anionic Surfactant Sodium Dodecyl Sulfate

2011 ◽  
Vol 32 (10) ◽  
pp. 1452-1458 ◽  
Author(s):  
Ziya Ahmad Khan ◽  
Mohammad Kamil ◽  
Othman Sulaiman ◽  
Rokiah Hashim ◽  
M. N. Mohamad Ibrahim ◽  
...  
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Anionic Surfactant ◽  
Sodium Dodecyl ◽  
Mixing Behavior ◽  
Dodecyl Sulfate

Self-Assembly of α-MnO2 Nanorods into Spheres: Synthesis and Electrochemical Properties

2008 ◽  
Vol 8 (3) ◽  
pp. 1494-1496 ◽  
Author(s):  
Xu Chun Song ◽  
Yi Fan Zheng ◽  
E. Yang ◽  
Yun Wang
Keyword(s):  
Cyclic Voltammetry ◽  
Sodium Dodecyl Sulfate ◽  
Electrochemical Properties ◽  
Electrode Material ◽  
Self Assembly ◽  
Sodium Dodecyl ◽  
Electrochemical Characterization ◽  
Dodecyl Sulfate ◽  
Hydrothermal Approach

The α-MnO2 spherical assemblies were prepared via a facile hydrothermal approach in the presence of sodium dodecyl sulfate (SDS). The assembled nanostructures were composed of the MnO2 nanorods with 150–200 nm in width and several micrometers in length. The products were characterized by SEM, TEM and XRD. The electrochemical characterization was carried out by cyclic voltammetry, which indicated that the α-MnO2 spherical assemblies were of an excellent electrode material for supercapacitor.

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