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Study on Leaching of Copper Nanoparticles in Combined Impregnation- Densification Treatments of wood after Accelerated Aging

Authors :
Aisona Talaei
azam ahmadi
ghoncheh resam
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.

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