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The electrostatic free energy of polyelectrolyte solutions. II. Fully stretched macromolecules
Abstract
(1) The electrostatic internal energy of a solution of rodlike, ionized polymolecules is calculated by an integration which makes use of the molecular potentials evaluated previously. (2) The electrostatic free energy is calculated by a charging process for which the reference state is a discharged solution of the same concentration as that of the charged solution. (3) A series of graphs is presented for the numerical evaluation of the internal and free energies of salt‐free polyelectrolyte solutions as a function of concentration, degree of ionization, and temperature. (4) The osmotic pressure of stretched polyelectrolytes is calculated from the free energy expression. The calculated osmotic coefficients are practically independent of molecular weight and polyelectrolyte concentration, and are determined by the degree of ionization. A comparison with the measurements of Kern on salt‐free polyacrylic acid at higher degrees of ionization (for which the macromolecules are stretched) gives a very satisfactory agreement. (5) An expression for the light scattering by polyelectrolyte solutions is derived from the equation for osmotic pressure and discussed briefly.
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Citations
Cited by
Marcus, Y., & Hefter, G. (2006) · Chemical Reviews · doi:10.1021/cr040087x · Cited by 1,134
Water-soluble polymer–metal ion interactions
Rivas, B. (2003) · Progress in Polymer Science · doi:10.1016/s0079-6700(02)00028-x · Cited by 465
Shahinpoor, M., & Kim, K. J. (2004) · Smart Materials and Structures · doi:10.1088/0964-1726/13/6/009 · Cited by 379
Structure and interactions of biological helices
Kornyshev, A. A., Lee, D. J., Leikin, S., & Wynveen, A. (2007) · Reviews of Modern Physics · doi:10.1103/revmodphys.79.943 · Cited by 320
Deserno, M., Holm, C., & May, S. (2000) · Macromolecules · doi:10.1021/ma990897o · Cited by 300
Metadata
- Authors
- Lifson, S., & Katchalsky, A.
- Venue
- Journal of Polymer Science
- Publisher
- Wiley
- Published
- 1954-02
- Volume
- 13
- Issue
- 68
- Pages
- 43-55
- ISSN
- 0022-3832 (ISSN-L)
- 1542-6238
- OpenAlex
- W2043156231
- Cited by
- 325
- References
- 0
- FWCI
- 11.72
- Type
- journal article
- Language
- en
- Open access
- closed
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- Lifson, S., & Katchalsky, A. (1954). The electrostatic free energy of polyelectrolyte solutions. II. Fully stretched macromolecules. Journal of Polymer Science. https://doi.org/10.1002/pol.1954.120136804
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