de.mpg.escidoc.pubman.appbase.FacesBean
Deutsch
 
Hilfe Wegweiser Datenschutzhinweis Impressum Kontakt
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

Morphology of micelles formed by diblock copolymer with a polvelectrolyte block

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons47662

Borisov,  O. V.
MPI for Polymer Research, Max Planck Society;

Externe Ressourcen
Es sind keine Externen Ressourcen verfügbar
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Borisov, O. V., & Zhulina, E. B. (2003). Morphology of micelles formed by diblock copolymer with a polvelectrolyte block. Macromolecules, 36(26), 10029-10036.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-63DF-B
Zusammenfassung
We present a mean-field theory to describe micelles formed by diblock copolymer with one neutral and one polyelectrolyte block in dilute aqueous solution. We examine equilibrium parameters of micelles as a function of degree of polymerization of both blocks, fraction of charged monomers in the ionic block, and the ionic strength in the solution. In contrast to earlier scaling studies, our theory enables us to construct phase diagrams of the system and distinguish the ranges of thermodynamic stability of spherical, cylindrical, and lamellar aggregates. We demonstrate that spherical starlike or crew-cut micelles are thermodynamically stable in a range of moderate salt concentrations. The morphological sphere-to-cylinder and cylinder-to-lamella transitions of the aggregates are predicted to occur for crew-cut micelles upon an increase in salt concentration or/and a decrease in degree of ionization of corona (ionic) block. The driving force for morphological transitions is the gain in conformational entropy of nonionic core block.