Wood products with anti-electrostatic properties have
wide applications in many fields. However, wood is an
insulator and does not itself have anti-electrostatic ability.
This study investigated several ionic liquids as anti-electrostatic
agents for wood. Ionic liquids are liquids at room
temperature (or close to room temperature), possess no
vapor pressure and are excellent conductors for electric
current. Maple and pine veneers were either soaked in or
brushed with five ionic liquids: 1-butyl-3-methylimidazolium
hexafluorophosphate, 1-butyl-3-methylimidazolium chloride,
1-ethyl-3-methylimidazolium tetrafluoroborate and
1-ethyl-3-methylimidazolium hexafluorophosphate. The
ionic liquid-treated wood specimens were then measured
for surface resistivity and volume resistivity in accordance
with ASTM standards. The effects of application
method (brushed vs. soaked) and storage time were
investigated. All the ionic liquids studied were effective
anti-electrostatic agents for pine and maple. For all ionic
liquids tested, pine had lower resistivity, and thus higher
anti-electrostatic ability, than maple.
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