Self-consistent field theory of adsorption of flexible polyelectrolytes onto an oppositely charged sphere

doi:10.1088/1674-1056/23/3/038202

Abstract The adsorption of flexible polyelectrolyte (PE) with the smeared charge distribution onto an oppositely charged sphere immersed in a PE solution is studied numerically with the continuum self-consistent field theory. The power law scaling relationships between the boundary layer thickness and the surface charge density and the charge fraction of PE chains revealed in the study are in good agreement with the existing analytical result. The curvature effect on the degree of charge compensation of the total amount of charges on the adsorbed PE chains over the surface charges is examined, and a clear understanding of it based on the dependences of the degree of charge compensation on the surface charge density and the charge fraction of PE chains is established.

Keywords: polyelectrolyte adsorption self-consistent field theory

Received: 10 June 2013
Revised: 03 September 2013
Accepted manuscript online:

PACS:	82.35.Rs	(Polyelectrolytes)
	68.47.Pe	(Langmuir-Blodgett films on solids; polymers on surfaces; biological molecules on surfaces)
	41.20.Cv	(Electrostatics; Poisson and Laplace equations, boundary-value problems)

Fund: Project supports by the National Natural Science Foundation of China (Grant Nos. 21074062 and 11174163), the Scientific Research Foundation for the Returned Overseas Chinese Scholars, Ministry of Education of China, and the Scientific Research Fund of Zhejiang Provincial Educational Department, China (Grant No. Y200907455).

Corresponding Authors: Tong Chao-Hui
E-mail: tongchaohui@nbu.edu.cn

Cite this article:

Tong Zhao-Yang (童朝阳), Zhu Yue-Jin (诸跃进), Tong Chao-Hui (童朝晖) Self-consistent field theory of adsorption of flexible polyelectrolytes onto an oppositely charged sphere 2014 Chin. Phys. B 23 038202

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Self-consistent field theory of adsorption of flexible polyelectrolytes onto an oppositely charged sphere

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