Abstract:
This study seeks to determine the feasibility of
utilizing one vaporizable copper compound - bis-[1-
(dimethylamino)-2-propanolato] copper(II) (Cu(DMAP)₂ as a
potential wood preservative. The synthesis of Cu(DMAP)₂
was conducted in accordance with a method developed by
Buhro and Dingman, Washington University, St. Louis,
Missouri. The yields of Cu(DMAP)₂ synthesis were about
58%.
Preservative treatment of oriented strand board(OSB)
using Cu(DMAP)₂ applied in the vapor phase was
investigated. Under optimum conditions complete
penetration of OSB was achieved. In addition, commercial
levels of copper retentions was obtained. Treatment time
and temperature has a major influence on copper retention
and penetration. The leachability test of Cu(DMAP)2 was
performed using a modification of AWPA Standard E-11 and results told us that Cu(DMAP)₂ and ammoniacal copper
sulfate (ACS) had similar leaching behavior.
The efficacy of Cu(DMAP)₂ as a preservative was
assessed using soil block test and compared to ACS and
chromated copper arsenate (CCA). Cu(DMAP)₂ was slightly
more effective than ACS at low retention in leached
samples, but it was slightly less effective than either ACS
or CCA at higher retentions.
