Understanding swollen-collapsed and re-entrant transitions in polyelectrolyte nanogels by a modified Donnan theory

Prateek K. Jha*, Jos W. Zwanikken, Monica Olvera De La Cruz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

We propose a modified Donnan theory for studying the volume transition behavior of polyelectrolyte nanogels at high salt concentrations. Inclusion of the excluded volume effect of ions explains a re-entrant behavior; nanogels undergo a swollen-collapsed-swollen transition with increase in the salt concentration. The optimal compaction of nanogels can be controlled by the addition of a neutral component or by using a solution of monovalent and divalent salts. Effects of the dielectric mismatch on the swelling response of a nanogel in a solution of monovalent and divalent salts are analyzed.

Original languageEnglish (US)
Pages (from-to)9519-9522
Number of pages4
JournalSoft Matter
Volume8
Issue number37
DOIs
StatePublished - Oct 7 2012

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics

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