Swelling and collapse of polyelectrolyte gels in equilibrium with monovalent and divalent electrolyte solutions

De Wei Yin; Monica Olvera De La Cruz; Juan J. De Pablo

doi:10.1063/1.3264950

Swelling and collapse of polyelectrolyte gels in equilibrium with monovalent and divalent electrolyte solutions

De Wei Yin, Monica Olvera De La Cruz, Juan J. De Pablo

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

54 Scopus citations

Abstract

The swelling of polyelectrolyte (PE) gels by 1:1 and 2:1 salts is studied via osmotic ensemble Monte Carlo simulations at constant osmotic pressure and electrolyte chemical potential of a reservoir phase in equilibrium with a model PE network. Large molecular weight gels exhibit a remarkable swelling response to small changes in 2:1 salt concentration. Gel collapse is accompanied by the formation of a previously unknown heterogeneous nanostructure, predicted by theory and observed in simulations, consisting of regions dense in monomers coexisting with regions rich in mono- and divalent ions.

Original language	English (US)
Article number	194907
Journal	Journal of Chemical Physics
Volume	131
Issue number	19
DOIs	https://doi.org/10.1063/1.3264950
State	Published - 2009

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

Access to Document

10.1063/1.3264950

Fingerprint Dive into the research topics of 'Swelling and collapse of polyelectrolyte gels in equilibrium with monovalent and divalent electrolyte solutions'. Together they form a unique fingerprint.

Cite this

@article{c665ad6084864433a6f8c1462120338b,

title = "Swelling and collapse of polyelectrolyte gels in equilibrium with monovalent and divalent electrolyte solutions",

abstract = "The swelling of polyelectrolyte (PE) gels by 1:1 and 2:1 salts is studied via osmotic ensemble Monte Carlo simulations at constant osmotic pressure and electrolyte chemical potential of a reservoir phase in equilibrium with a model PE network. Large molecular weight gels exhibit a remarkable swelling response to small changes in 2:1 salt concentration. Gel collapse is accompanied by the formation of a previously unknown heterogeneous nanostructure, predicted by theory and observed in simulations, consisting of regions dense in monomers coexisting with regions rich in mono- and divalent ions.",

author = "Yin, {De Wei} and {Olvera De La Cruz}, Monica and {De Pablo}, {Juan J.}",

note = "Funding Information: The authors are grateful for support from the U.S. National Science Foundation (NSF) through the University of Wisconsin-Madison Materials Research Science and Engineering Center (MRSEC) on Nanostructured Interfaces (Award No. 0520527) and the NSF-EC Multiscale Modeling Collaborative Grant (Award No. 0503940). Copyright: Copyright 2009 Elsevier B.V., All rights reserved.",

year = "2009",

doi = "10.1063/1.3264950",

language = "English (US)",

volume = "131",

journal = "Journal of Chemical Physics",

issn = "0021-9606",

publisher = "American Institute of Physics Publising LLC",

number = "19",

}

TY - JOUR

T1 - Swelling and collapse of polyelectrolyte gels in equilibrium with monovalent and divalent electrolyte solutions

AU - Yin, De Wei

AU - Olvera De La Cruz, Monica

AU - De Pablo, Juan J.

N1 - Funding Information: The authors are grateful for support from the U.S. National Science Foundation (NSF) through the University of Wisconsin-Madison Materials Research Science and Engineering Center (MRSEC) on Nanostructured Interfaces (Award No. 0520527) and the NSF-EC Multiscale Modeling Collaborative Grant (Award No. 0503940). Copyright: Copyright 2009 Elsevier B.V., All rights reserved.

PY - 2009

Y1 - 2009

N2 - The swelling of polyelectrolyte (PE) gels by 1:1 and 2:1 salts is studied via osmotic ensemble Monte Carlo simulations at constant osmotic pressure and electrolyte chemical potential of a reservoir phase in equilibrium with a model PE network. Large molecular weight gels exhibit a remarkable swelling response to small changes in 2:1 salt concentration. Gel collapse is accompanied by the formation of a previously unknown heterogeneous nanostructure, predicted by theory and observed in simulations, consisting of regions dense in monomers coexisting with regions rich in mono- and divalent ions.

AB - The swelling of polyelectrolyte (PE) gels by 1:1 and 2:1 salts is studied via osmotic ensemble Monte Carlo simulations at constant osmotic pressure and electrolyte chemical potential of a reservoir phase in equilibrium with a model PE network. Large molecular weight gels exhibit a remarkable swelling response to small changes in 2:1 salt concentration. Gel collapse is accompanied by the formation of a previously unknown heterogeneous nanostructure, predicted by theory and observed in simulations, consisting of regions dense in monomers coexisting with regions rich in mono- and divalent ions.

UR - http://www.scopus.com/inward/record.url?scp=70450263475&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70450263475&partnerID=8YFLogxK

U2 - 10.1063/1.3264950

DO - 10.1063/1.3264950

M3 - Article

C2 - 19929076

AN - SCOPUS:70450263475

VL - 131

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 19

M1 - 194907

ER -

Swelling and collapse of polyelectrolyte gels in equilibrium with monovalent and divalent electrolyte solutions

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Cite this