Polyampholyte solutions between charged surfaces: Debye–Huckel theory Adsorption of a polyelectrolyte chain to a charged surface Polyampholyte solutions between charged surfaces: Debye–Huckel theory

Journal Article (Academic article)

We calculate the interaction between two identically charged surfaces immersed in a polyampholyte solution in the framework of the linear response approximation. In the case of the randomly charged polyampholyte with equal fractions of positively f ϩ and negatively f Ϫ charged groups the interaction between charged surfaces is similar to that in electrolyte solutions. The screening of the surface potential in the linear response approximation is due to the charge redistribution on the length scales of the polymer coils without the excess of the polymers. In the solution of asymmetric polyampholytes (f ϩ f Ϫ) the charge density fluctuations result in additional attractive interactions linearly proportional to the charge asymmetry.

Full Text

Duke Authors

Cited Authors

  • Dobrynin, AV; Rubinstein, M; Joanny, J-F

Published Date

  • January 1, 1998

Published In

  • The Journal of Chemical Physics the Journal of Chemical Physics the Journal of Chemical Physics the Journal of Chemical Physics Journal of Chemical Physics Colligative Properties the Journal of Chemical Physics the Journal of Chemical Physics

Volume / Issue

  • 109 /

Chapter

  • 10

Start / End Page

  • 1543 - 134905

Digital Object Identifier (DOI)

  • 10.1063/1.1672157