Effects of nano-silver impregnation on brittleness, physical and mechanical properties of heat-treated hardwoods |
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| Authors: | Hamid Reza Taghiyari Aliakbar Enayati Hadi Gholamiyan |
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| Affiliation: | 1. Wood Science and Technology Department, The Faculty of Civil Engineering, Shahid Rajaee Teacher Training University (SRTTU), Lavizan, Shabanloo St., Tehran, Iran
2. Wood and Paper Science and Technology Department, Faculty of Natural Resources, The University of Tehran, Tehran, Iran
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| Abstract: | The present study investigates the effect of heat treatment of untreated and nano-silver-impregnated Populus nigra, Populus deltoides and Fagus orientalis on the physical and mechanical properties. Specimens were impregnated with a 200-ppm aqueous silver nanoparticles suspension. Heat treatment was carried out at temperatures of 135 ± 3 °C and 185 ± 3 °C. Nano-silver impregnation aggravated the effects of heat treatment. Although significant in some cases, nano-silver impregnation did not seem to have great effect on physical properties. It may be concluded that although NS impregnation aggravated the effects of heat treatment on solid woods, other factors may also be involved such as the species and density of the wood. |
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