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Issue 37, 2012
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Understanding swollen–collapsed and re-entrant transitions in polyelectrolyte nanogels by a modified Donnan theory

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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.

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

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Publication details

The article was received on 08 Jun 2012, accepted on 25 Jul 2012 and first published on 17 Aug 2012


Article type: Communication
DOI: 10.1039/C2SM26341F
Citation: Soft Matter, 2012,8, 9519-9522
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    Understanding swollen–collapsed and re-entrant transitions in polyelectrolyte nanogels by a modified Donnan theory

    P. K. Jha, J. W. Zwanikken and M. Olvera de la Cruz, Soft Matter, 2012, 8, 9519
    DOI: 10.1039/C2SM26341F

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