Journal
MACROMOLECULAR MATERIALS AND ENGINEERING
Volume 298, Issue 12, Pages 1335-1343Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.201200439
Keywords
biocide; copper oxide; drug delivery systems; nanoparticles; wood preservation
Funding
- United States Environmental Protection Agency Science to Achieve Results (STAR) Program [GR832371]
- Department of Chemistry at Michigan Technological University
- EPA [150634, GR832371] Funding Source: Federal RePORTER
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Copper-based nanoparticle wood preservatives typically contain a mixture of nanoparticles. We test the effect of nanoparticle size on copper leaching, and if the leachate contains nanoparticles, by treating southern pine sapwood with copper oxide nanoparticles with uniform diameters of 10 and 50nm. Significant numbers of nanoparticles are found in the leachate from the treated wood, and trends show that size is a major factor. The 50nm nanoparticles leach slightly less than the control (ammonium copper salt), whereas 10nm nanoparticles leach more. Effects of polymer stabilizers are also tested and they increase nanoparticle leaching compared to unstabilized nanoparticles.
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