Determination of Critical Aggregation Concentration in the Poly-(vinylpyrrolidone)-Sodium Dodecyl Sulfate System by Capillary Electrophoresis


Öztekin N., Erim F. B.

JOURNAL OF SURFACTANTS AND DETERGENTS, vol.16, no.3, pp.363-367, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 16 Issue: 3
  • Publication Date: 2013
  • Doi Number: 10.1007/s11743-012-1411-7
  • Journal Name: JOURNAL OF SURFACTANTS AND DETERGENTS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.363-367
  • Keywords: Poly-(vinylpyrrolidone), Sodium dodecyl sulfate, Critical aggregation concentration, Capillary electrophoresis, Analytical method, MOLECULAR-MASS POLYETHYLENEIMINE, AIR-WATER-INTERFACE, AQUEOUS-SOLUTION, ELECTROKINETIC CHROMATOGRAPHY, POLY(ETHYLENE OXIDE), UNCHARGED POLYMERS, IONIC SURFACTANTS, CATIONIC POLYMER, SODIUM, SEPARATION
  • Istanbul Technical University Affiliated: Yes

Abstract

We introduce an alternative separation method, i.e., capillary electrophoresis to examine the polymer/surfactant interaction. The migration behavior of the poly-(vinylpyrrolidone)-sodium dodecyl sulfate (PVP-SDS) model system was screened under a high electrical field for seven different PVP initial concentrations. From the electrophoretic mobilities of formed polymer-surfactant species, the critical aggregation concentration (CAC) of SDS for PVP was determined. The CAC value in the present study was very well matched with the CAC values of this system reported by alternative methods. A strong interaction between polymer and SDS under CAC concentration was observed and the independence of CAC on polymer concentration was experimentally demonstrated.