NMR investigations of self-aggregation characteristics of SDS in a model assembled tri-block copolymer solution

► NMR diffusion study provides an opportunity to demonstrate polymer-surfactant interactions in distinct regimes of SDS. ► The obtained micelle pertinent parameters like cmc and hydrodynamic radius reveal the binding nature of polymer to SDS. ► The onset of secondary micelle concentration (C2) of SDS. ► The disintegration of polymer at higher SDS concentrations. ► The NMR results well corroborated by surface tension and conductivity data.