Complexation of oppositely charged polyelectrolytes: Effect of ion pair formation

Alexander Kudlay; Alexander V. Ermoshkin; Monica Olvera De La Cruz

doi:10.1021/ma048519t

Complexation of oppositely charged polyelectrolytes: Effect of ion pair formation

Alexander Kudlay^*, Alexander V. Ermoshkin, Monica Olvera De La Cruz

^*Corresponding author for this work

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

114 Scopus citations

Abstract

Complexation in symmetric solutions of oppositely charged polyelectrolytes is studied theoretically. We include polyion cross-linking due to formation of thermoreversible ionic pairs. The electrostatic free energy is calculated within the random phase approximation taking into account the structure of thermoreversible polyion clusters. The degree of ion association is obtained self-consistently from a modified law of mass action, which includes a long-range electrostatic contribution. We analyze the relative importance of the three complexation driving forces: long-range electrostatics, ion association, and van der Waals attraction. The conditions on the parameters of the system that ensure stability of the complex with addition of salt are determined.

Original language	English (US)
Pages (from-to)	9231-9241
Number of pages	11
Journal	Macromolecules
Volume	37
Issue number	24
DOIs	https://doi.org/10.1021/ma048519t
State	Published - Nov 30 2004

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma048519t

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abstract = "Complexation in symmetric solutions of oppositely charged polyelectrolytes is studied theoretically. We include polyion cross-linking due to formation of thermoreversible ionic pairs. The electrostatic free energy is calculated within the random phase approximation taking into account the structure of thermoreversible polyion clusters. The degree of ion association is obtained self-consistently from a modified law of mass action, which includes a long-range electrostatic contribution. We analyze the relative importance of the three complexation driving forces: long-range electrostatics, ion association, and van der Waals attraction. The conditions on the parameters of the system that ensure stability of the complex with addition of salt are determined.",

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T2 - Effect of ion pair formation

AU - Kudlay, Alexander

AU - Ermoshkin, Alexander V.

AU - De La Cruz, Monica Olvera

PY - 2004/11/30

Y1 - 2004/11/30

N2 - Complexation in symmetric solutions of oppositely charged polyelectrolytes is studied theoretically. We include polyion cross-linking due to formation of thermoreversible ionic pairs. The electrostatic free energy is calculated within the random phase approximation taking into account the structure of thermoreversible polyion clusters. The degree of ion association is obtained self-consistently from a modified law of mass action, which includes a long-range electrostatic contribution. We analyze the relative importance of the three complexation driving forces: long-range electrostatics, ion association, and van der Waals attraction. The conditions on the parameters of the system that ensure stability of the complex with addition of salt are determined.

AB - Complexation in symmetric solutions of oppositely charged polyelectrolytes is studied theoretically. We include polyion cross-linking due to formation of thermoreversible ionic pairs. The electrostatic free energy is calculated within the random phase approximation taking into account the structure of thermoreversible polyion clusters. The degree of ion association is obtained self-consistently from a modified law of mass action, which includes a long-range electrostatic contribution. We analyze the relative importance of the three complexation driving forces: long-range electrostatics, ion association, and van der Waals attraction. The conditions on the parameters of the system that ensure stability of the complex with addition of salt are determined.

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Complexation of oppositely charged polyelectrolytes: Effect of ion pair formation

Abstract

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