Polyelectrolyte membrane electrets. Evidence for high degree of charge storage capacity

Miller, Irving F.; Mayoral, Joaquin

doi:10.1021/j100553a027

Cited by 5 publications

(5 citation statements)

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“…The number of independent transport properties in Eq. [4] is 89 n(n --1) because 9 is not defined and, by Newton's third law of motion, ~)ij = ~ji. Specific combinations of these…”

Section: Discussionmentioning

confidence: 99%

“…Classical polarization theory relates total polarization to applied field by D = eoE + P [4] where D is electric displacement, E is the external field, and P is the polarization. In the absence of an externally applied electric field, this equation can be used to relate the persistent (electret) polarization, Pe to a cavity field, Ec, which would exist in a diskshaped cavity within the (disk-shaped) membrane by…”

Section: Theorymentioning

confidence: 99%

“…This theory can be extended, with the use of the multicomponent diffusion equation, to treat the effects of convection, diffusion, and migration in concentrated solutions with two or more electroactive constituents (2,3). A parallel analysis, that employs the principles of irreversible thermodynamics, has considered transport phenomena in mixtures of two binary electrolytes with a common ion in a neutral solvent (4).…”

Section: Transport Equations For a Mixture Of Two Binarymentioning

confidence: 99%

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A Divergence Model for Heterocharge Electret Formation in Polyelectrolyte‐Polyvinyl Alcohol Membranes: Results for Sodium‐ and Potassium‐Polystyrenesulfonate

Mayoral

Miller

1979

J. Electrochem. Soc.

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A model has been developed to explain the e x t r e m e l y high levels of p e rsistent electrical polarization obtained for membranes containing polyvinyl alcohol (PVA) and either sodium polystyrenesulfonate (PSSNa) or potassium polystyrenesulfonate (PSSK). The model assumes the presence of divergence elements, probably of a sernicrystalline nature, scattered throughout a homogeneous m e m b r a n e matrix. Assuming that only about 2-5% of the possible divergence elements actually contribute, the model predicts values of polarization which fit the PSSNa experimental data e x t r e m e l y well. The model fits the P S S K data well only when a dipole separation distance for P S S K of about 7.1A is assumed. This large dipole separation distance for P S S K p r o b a b l y results from the fact that the affinity of K + for the OH groups on PVA results in a deviation from the average composition within the divergence elements, an effect not included in the model.

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“…The number of independent transport properties in Eq. [4] is 89 n(n --1) because 9 is not defined and, by Newton's third law of motion, ~)ij = ~ji. Specific combinations of these…”

Section: Discussionmentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

Section: Transport Equations For a Mixture Of Two Binarymentioning

confidence: 99%

See 1 more Smart Citation

A Divergence Model for Heterocharge Electret Formation in Polyelectrolyte‐Polyvinyl Alcohol Membranes: Results for Sodium‐ and Potassium‐Polystyrenesulfonate

Mayoral

Miller

1979

J. Electrochem. Soc.

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“…Recently, we reported on a system in which strong heterocharged electrets were shown to exist in polyelectrolyte membranes (14)(15)(16)(17). These membranes were electrical conductors and, in fact, it was shown that the amount of persistent polarization actually increased with electrical conductivity.…”

mentioning

confidence: 99%

“…Thermoelectrets were formed in these membranes by the methods reported earlier (14), except that the membranes and electrodes were previously coated with purified colloidal graphite to reduce contact resistance (17). Polarization was carried out at 65~176 in vac-uum for at least 24 hr.…”

mentioning

confidence: 99%