Journal of Nanoparticle Research

, Volume 11, Issue 5, pp 1087–1098 | Cite as

Microdistribution of copper-carbonate and iron oxide nanoparticles in treated wood

  • Hiroshi Matsunaga
  • Makoto Kiguchi
  • Philip D. Evans
Research Paper


Aqueous dispersions of copper-carbonate nanoparticles and microparticles have just begun to be exploited commercially for the preservative treatment of wood. The success of the new systems will depend, in part, on the uniform distribution of the preservative in wood and the ability of copper to penetrate cell walls. We examined the distribution of copper in wood treated with a nano-Cu preservative. Copper particles are not uniformly distributed in treated wood, but they accumulate in voids that act as the flow paths for liquids in wood. Particles are deposited on, but not within cell walls. Nevertheless, elemental copper is present within cell walls, but at a lower level than that in wood treated with a conventional wood preservative. These findings suggest that nano-Cu preservatives are able to deliver bioactive components into wood cell walls even though the majority of copper particles are too large to penetrate the cell wall’s nanocapillary network.


Copper carbonate Nanoparticles Microparticles Wood Preservative Micro-distribution SEM EDX 



The authors gratefully acknowledge the expert technical assistance of Derrick Horne (BioImaging Facility, UBC) and Bill Roth (Hitachi High Technologies America, Pleasanton, CA). We are very grateful for the financial support for this research provided by The OECD (Award of a Co-operative Research Program Fellowship to HM), Canadian Foundation for Innovation, BC Knowledge Development Fund and Ministry of Education, Culture, Sports, Science and Technology of Japan (Grant-in-Aid for Scientific Research no. 19780138). We would like to thank Dr. Kazuyuki Oda and Dr. Junji Matsumura for their suggestions and Dr. Yuko Ito for ICP analysis.


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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Hiroshi Matsunaga
    • 1
  • Makoto Kiguchi
    • 1
  • Philip D. Evans
    • 2
  1. 1.Forestry and Forest Products Research InstituteTsukuba, IbarakiJapan
  2. 2.Centre for Advanced Wood ProcessingUniversity of British ColumbiaVancouverCanada

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