Determination of polymer concentration effects on aqueous solution of polyvinylpyrrolidone--sodium dodecyl sulfate micellization properties

The interaction between polyvinylpyrrolidone (PVP) and sodium dodecyl sulfate (SDS) was studied in order to determine the effect of the molecular weight and concentration of PVP on the development of the critical micelle concentration (CMC) of the surfactant, SDS. Each of three different molecular weights of polymer was examined at two concentration levels. The results of the experiments showed that two types of micelles were formed, and the CMC was determined for both types. For the first micelle type, the CMC was at 3.1 mM of SDS. For the second micelle type, the CMC was in the region of 9.5 to 11.2 mM of SDS.