Effects of Nanosilver Impregnation on Impact Bending Strength of  Ice-Blasted Beech and Poplar Woods

Ayoub ESMAILPOUR; Mohammad Sadegh TAHER TOLOU DEL; Hamid Reza TAGHIYARI; Adrian Cheng Yong CHOO; Hassan SIAHPOSHT

doi:10.48048/wjst.2018.2698

Authors

Ayoub ESMAILPOUR Department of Physics, Faculty of Science, Shahid Rajaee Teacher Training University, Tehran
Mohammad Sadegh TAHER TOLOU DEL Faculty of Architecture and Urban Design, Shahid Rajaee Teacher Training University, Tehran
Hamid Reza TAGHIYARI Wood Science & Technology Department, Faculty of Materials Engineering & New Technologies, Shahid Rajaee Teacher Training University, Tehran
Adrian Cheng Yong CHOO Market Transformation Initiative, World Wide Fund for Nature Malaysia, Petaling Jaya, Selangor
Hassan SIAHPOSHT Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University, Sari

DOI:

https://doi.org/10.48048/wjst.2018.2698

Keywords:

Cleaning, ice-blasting, impact bending strength, nanosilver, solid wood

Abstract

Ice-blasting (frozen CO₂ at minus 78.5 ºC) is one of the modern methods of cleaning for industrial purposes without any contamination or hazard to the environment. Effects of ice-blasting were studied here on the basis of normal solid wood as well as nanosilver-impregnated Populus nigra and Fagus orientalis. The size range of silver nanoparticles was 20 - 90 nm. Specimens were free from any knots, splits, rot, or other visual defects. Results showed that ice-blasting made impact strength decrease in beech by 8.4 %; however, an insignificant increase of 0.8 % was observed in poplar. Impregnating the specimens with a nanosilver suspension before ice-blasting made impact strength increase by 25.8 % in poplar; it also mitigated the impact loss in beech (5.2 % in comparison to control specimens). It can be concluded that the negative effect of ice-blast treatment is less in lower-density poplar wood; also, impregnation with nanosilver can even increase its impact strength. In higher-density beech wood, however, the impregnation can mitigate the significant negative effect of the ice-blast treatment on impact bending strength.

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Author Biography

Hamid Reza TAGHIYARI, Wood Science & Technology Department, Faculty of Materials Engineering & New Technologies, Shahid Rajaee Teacher Training University, Tehran

Wood Science & Technology Department

Biotechnology

Nanotechnology

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