How Detergents Dissolve Polymeric Micelles: Kinetic Pathways of Hybrid Micelle Formation in SDS and Block Copolymer Mixtures
Synne Myhre, Matthias Amann, Lutz Willner, Kenneth D. Knudsen, Reidar Lund
Abstract
-PEO5 micelles, we observe micellar dissolution and formation of mixed micelles occurring on the timescale of hours. Using a coexistence model of mixed and neat micelles, the SAXS data were analyzed to provide detailed structural parameters over time. First, we observe a fast fragmentation/fission step followed by a slow reorganization process. The latter process is essentially independent of concentration at low volume fraction but is greatly accelerated at larger concentrations. This might indicate a crossover from a predominance of molecular exchange to fusion/fission processes.
Topics & Concepts
MicellePulmonary surfactantCopolymerSodium dodecyl sulfateChemistryPolymerKineticsChemical engineeringAmphiphileEthylene oxidePolymer chemistryOrganic chemistryAqueous solutionPhysicsQuantum mechanicsBiochemistryEngineeringSurfactants and Colloidal SystemsAdvanced Polymer Synthesis and CharacterizationNanoparticle-Based Drug Delivery