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SDS is found in aqueous solutions as well as in amino aqueous solutions, according to the present study. Surface tension experiments have also been used to determine several surface properties, including surface excess concentration, surface tension at CMC, and Gibbs free energy of adsorption, enthalpy Hm°, and the most critical packing parameter. Interestingly, CMC values of SDS in water and in aqueous amino acids estimated by the surface tension technique are similar to the conductance method's equivalents. In both presence and absence of AAs, the thermodynamic parameters of SDS micellization were also tested. Negative values of Gm°, Hm° elucidate that micellization of SDS in the presence of amino acids is thermodynamically spontaneous and exothermic.
Source link: https://doi.org/10.3390/chemistry4010013
The ideal conditions for esterification of aspartic acid and n-octanol are 24 hours in duration and a 1:1 molar ratio of reactants. Structure elucidation of -octyl aspartate is achieved by FT-IR, 1H NMR, and CHNS element analysis techniques. Calculated aggregation number was 34 and micelle radius was 1. 40 nm, according to the CMC of synthesized surfactants, the maximum surface area per molecule of a synthesized surfactant molecule was 29. 49 nm, while minimum surface area per cent effective molecule was 2. 40 nm; calculated aggregation number was 29. 49 nm; estimated aggregation number was 0. 80 nm; calculated aggregation The OECD and Winkler's method were used to determine sodium octyl aspartate biodegradation, which was found to be 95. 1 percent.
Source link: https://doi.org/10.25303/257rjce3421
The counterion binding constants for chloride and bromide ions were then used to separate from the slope of the modified CH equation. In the Hoffmeister series and the findings from other research, the bromide counterion-binding to cetylpyridinium ionic micelle is more effective than that of the chloride counterion, according to the positions of chloride and bromide ions in the Hoffmeister series and other studies.
Source link: https://doi.org/10.3139/113.110598
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