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Surface Electronic States and Electrostatic Attractive Forces between Metals or Semiconductor and Tribocharged Polymers

Published online by Cambridge University Press:  01 February 2011

Yoshihiro Momose
Affiliation:
Department of Materials Science, Ibaraki University, Hitachi 316-8511, Japan
Masahiro Umeki
Affiliation:
Department of Materials Science, Ibaraki University, Hitachi 316-8511, Japan
Daisuke Suzuki
Affiliation:
Department of Materials Science, Ibaraki University, Hitachi 316-8511, Japan
Keiji Nakayama
Affiliation:
National Institute of Advanced Industrial and Science and Technology, Tsukuba 305-8564, Japan
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Abstract

A new simple method for measuring a long-range electrostatic attractive force between metal and semiconductor substrate and charged polymer surfaces has been developed to make clear the effect of the electronic nature of substrate surfaces. Nickel, titanium, and silicon wafer substrates were subjected to various surface pretreatments. The surfaces of polystyrene and polytetrafluoroethylene sheets were positively and negatively charged by triboelectrification, respectively. A progressive increase in the attractive force was observed with a decrease in the distance between the substrate and polymer surfaces. The magnitude of the attractive force was greatly influenced by the substrate pretreatments and the polymers with the oppositely charged surface. The electronic nature of the substrate surfaces evaluated by temperature programmed photoelectron emission method was well correlated with the attractive force. The electrostatic induction generated at the substrate surface is considered to govern the attractive force.

Type
Research Article
Copyright
Copyright © Materials Research Society 2005

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