Vapor copper : a potential wood preservative Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/tt44pr747

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  • 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.
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