Physicochemical Studies on the Interfacial and Bulk Behaviors of Sodium N-Dodecanoyl Sarcosinate (SDDS)

Sodium N -dodecanoyl sarcosinate (SDDS), a novel amino-acid based surfactant, has immense biological and industrial importance. Although it is being used in a number of cosmetic formulations, systematic analysis of the bulk and interfacial properties of the surfactant is scarce in the literature. In...

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Bibliographic Details
Published in:Journal of surfactants and detergents 2009-05, Vol.12 (2), p.131-143
Main Authors: Ray, Gargi Basu, Ghosh, Soumen, Moulik, Satya P.
Format: Article
Language:English
Subjects:
Acyl sarcosines
Aquatic Pollution
Behavior
Calorimetry
Chemistry
Chemistry and Materials Science
Cosmetics
Cotton effect
Industrial Chemistry/Chemical Engineering
Interfacial parameters
Micellization
Original Article
Physical Chemistry
Polymer Sciences
Salt
Salt effect
Skin
Sodium
Spectrophotometry
Studies
Surface tension
Surfaces and Interfaces
Surfactants
Temperature
Thin Films
Waste Water Technology
Water Management
Water Pollution Control
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Summary:Sodium N -dodecanoyl sarcosinate (SDDS), a novel amino-acid based surfactant, has immense biological and industrial importance. Although it is being used in a number of cosmetic formulations, systematic analysis of the bulk and interfacial properties of the surfactant is scarce in the literature. In this study, effects of salt, temperature, and pH on the self-association and related properties of SDDS have been examined in detail using methods such as tensiometry, conductometry, fluorimetry, pH-metry, spectrophotometry, calorimetry, and circular dichroism. The nature of amphiphilic packing and the aggregation numbers of the assemblies have been deciphered. Properties of the acid form of the surfactant have also been explored. The results have been conceptually rationalized and systematically presented together with associated energetics of the interfacial adsorption and self-aggregation of the surfactant in the bulk.
ISSN:1097-3958
1558-9293
DOI:10.1007/s11743-008-1105-3