Interaction of anionic surfactant with polymeric nanoparticles of similar charge

Journal of Colloid and Interface Science
Saurabh Shrivastava, Joykrishna Dey

Abstract

The formation of micelle-like nanosize aggregates above a critical aggregation concentration (CAC) by a water-soluble, amphiphilic, and statistical copolymer poly(SAMPS/DA) of sodium N-acrylamidomethylpropanesulfonate (SAMPS) and N-dodecylacrylamide (DA) was studied. The structural changes that result from the interactions between the polymeric nanoparticles and sodium dodecylsulfate (SDS), an anionic surfactant, were studied with the aid of surface tension, viscosity, steady-state fluorescence, dynamic light scattering, and transmission electron microscopic techniques. In dilute solution with polymer concentration C(p)<CAC, the copolymer does not interact with SDS at concentrations lower than its CMC value. The polymer only binds to SDS micelles to produce polymer-decorated micelles. In polyelectrolyte solutions with C(p)>CAC, strong interactions between the polyelectrolyte and SDS were observed even at a very low level of surfactant addition. The interaction is purely hydrophobic in nature. The surfactant monomers bind to the polymer micelles to form smaller spherical aggregates (polymer-SDS complex). When surfactant was added above its saturation concentration, the association complexes are disrupted and only surfactant mice...Continue Reading

References

Sep 24, 2004·Langmuir : the ACS Journal of Surfaces and Colloids·Ashok Mohanty, Joykrishna Dey
Mar 23, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Martin OlssonLennart Piculell
Jun 18, 2005·Journal of Colloid and Interface Science·Sumita Roy, Joykrishna Dey
Jan 18, 2006·Journal of Colloid and Interface Science·Dibyendu KhatuaJoykrishna Dey

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Citations

Jun 15, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Bappaditya NaskarSatya P Moulik
Mar 10, 2012·Journal of Colloid and Interface Science·Xiaohan WuSuming Li

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