Vol. 53 No. 01 (2003): Volume 53 Number 01, May 2003
Articles

High-Degeneracy Ordering of Polyampholyte Gels from a Random-Field Model

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  • Daniel P. Aalberts,
  • A. Nihat Berker
Daniel P. Aalberts
Department of Physics, Wiliams College, Massachusetts, USA
A. Nihat Berker
Department of Physics, Istanbul technical University

Published 05/01/2003

Keywords

  • Gels,
  • polyampholytes,
  • phase coexistence

How to Cite

P. Aalberts, Daniel, and A. Nihat Berker. 2003. “High-Degeneracy Ordering of Polyampholyte Gels from a Random-Field Model”. ITU ARI Bulletin of Istanbul Technical University 53 (01):2-5. https://ari.itu.edu.tr/index.php/ituari/article/view/14.

Copyright (c) 2003 ITU Press

Creative Commons License

This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.

Abstract

Experiments have yielded multiple coexistence loops for gels with random positive and negative ionic groups; mchibiting the existence of up to seven distinct macroscopic phases distinguished by volume discontinuities. We introduce for this system a model composed of local degrees of freedom for ionization and for ionized cross-binding which are spatially arrayed with random connectivity. This model yields the multiple coexistence of phases, as well as volume versus excess charge curves, similar to the experimental results.
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