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Study on Leaching of Copper Nanoparticles in Combined Impregnation- Densification Treatments of wood after Accelerated Aging
- Source :
- Iranian Journal of Wood and Paper Industries, Vol 6, Iss 1, Pp 159-165 (2015)
- Publication Year :
- 2015
- Publisher :
- Iranian Scientific Association of Wood and Paper Industries, 2015.
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Abstract
- This study was performed to evaluate the leaching rate of copper nanoparticles in combined impregnation-densification treated poplar and spruce wood after accelerated aging. Specimens were prepared by impregnation with 200 and 400 ppm nano-copper suspensions, followed by pre-steam treatment and densification. Impregnation was done in a sealed vessel with 4 bar pressure in 20 minutes. Half of the specimens were oven-dried and steamed at 150°C for 2 hours and immediately densified under the hot press at 170°C for 3 hours to reach to the 33% compression rate. All specimens were exposed to the 6 steps accelerated aging procedure according to ASTM D-1037. Leaching test was performed according to EN84 standard (1997) for a period of 14 days. The leached residues were investigated in the Mineral Exploration and Geological Center by atomic absorption method. Results showed that nano-copper particles in impregnated specimens had no leaching; but the pre-steaming and densification treatments led to leaching the nano-copper particles from the treated wood.
Details
- Language :
- Persian
- ISSN :
- 20089066 and 24233242
- Volume :
- 6
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- Iranian Journal of Wood and Paper Industries
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.726a04a52cdc462a814cc2dfe2dc8d9e
- Document Type :
- article