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By virtue of their sensitivity and reproducibility, conductivity measurements provide an accurate method for determining CMC in anionic and cationic surfactants [29]. CMC is calculated from the point of intersection of two lines in conductivity versus surfactant concentration plot in two regions corresponding to surfactant monomers ([SDS] « CMC) and aggregates ([SDS] » CMC). Figure 1 illustrates the determination of CMC at two different temperatures and in the presence of CA as an additive.
Copyright and License information: ©2019 by the authors.
Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
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