Adsorption of flexible polyelectrolytes on charged surfaces. Issue 32 (25th July 2016)

• Record Type: Journal Article
• Authors: Subbotin, A. V.; Semenov, A. N.
• Is Part Of: Soft matter. Volume 12:Issue 32(2016)
• Page Start: 6771
• Page End: 6787
• Publication Date: 2016-07-25
• Subjects: Soft condensed matter -- Periodicals; 530.413
• DOI: 10.1039/c6sm01140c
• Languages: English
• ISSNs: 1744-683X

Abstract

Abstract : The effect of various physical parameters on an adsorbed polyelectrolyte layer structure and charge inversion are studied theoretically in detail. Abstract : Adsorption of weakly charged polyelectrolyte (PE) chains from dilute solution on an oppositely charged surface is studied using the self-consistent mean-field approach. The structure of the adsorbed polymer layer and its excess charge are analyzed in the most important asymptotic and intermediate regimes both analytically and numerically. Different regimes of surface charge compensation by PE chains including partial and full charge inversion are identified and discussed in terms of physical parameters like the magnitude of specific short-range interactions of PE segments with the surface, solvent quality and ionic strength. The effect of excluded-volume monomer interactions is considered quantitatively both in the marginally good and poor solvent regimes.