Abstract

The corona-charging properties of TiO2-polymer dispersion layers were determined in the dark at temperatures 0°–35°C by the turn-table method. Dispersion layers of TiO2 (rutile) and polyvinyl acetate, coated on an aluminum foil to about 15 μ thickness, were used. The results showed the rising rate of the surface potential has a maximum at around 20°C. The saturation potential decreases slightly with a rise in temperature. The decay potentials were represented by the plot logV  vs. \sqrtt. The relation between logV and \sqrtt is linear in certain range of the surface potential, and the gradient increases in proportion to the rise in temperature. This is discussed with the use of an equivalent-circuit model.

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