Brushes of flexible, semiflexible and rodlike diblock polyampholytes: Molecular dynamics simulation and scaling analysis

Abstract

Planar brushes of flexible, semiflexible and rodlike diblock polyampholytes are studied using molecular dynamics simulations and scaling analysis in a wide range of the grafting density. Simulations show linear dependence of the average thickness on the grafting density for all the brushes regardless of their different equilibrium conformations and different flexibility of anchored chains. Slopes of fitted lines to the average thickness of the brushes of semiflexible and rodlike polyampholytes versus the grafting density are approximately the same and differ considerably from that of the brush of flexible chains. The average thickness of the brush of diblock polyampholytes is also obtained as a function of the grafting density using a simple scaling analysis which is in good agreement with the results of our simulations.

5 Figures

References in corpus (5)

• Theoretical Approaches to Neutral and Charged Polymer Brushes
• MMM2D: A fast and accurate summation method for electrostatic interactions in 2D slab geometries
• Molecular Dynamics Simulation of Semiflexible Polyampholyte Brushes - The Effect of Charged Monomers Sequence
• Rod-like Polyelectrolyte Brushes with Mono- and Multivalent Counterions
• Behavior of block-polyampholytes near a charged surface

Cited by in corpus (1)

• Solvation force between tethered polyelectrolyte layers. A density functional approach