| Autor: |
Nowrouzi, Zahra, Mohebby, Behbood, Younesi, Habibollah |
| Zdroj: |
Journal of the Indian Academy of Wood Science; Dec2014, Vol. 11 Issue 2, p174-181, 8p |
| Abstrakt: |
Effects of nano-chitosan on physical and mechanical properties as well as bio-resistances of beech and fir wood were investigated in the current research work. nano-chitosan was prepared and used to treat wood due its smaller size and also stability of the solution. Beech and fir wood blocks were treated with chitosan and nano-chitosan as 1 % concentrations to determine their physical and mechanical properties as well as resistance against white and brown rot fungi. Scanning electron microscope (SEM) as well as zeta meter was also applied to measure the nano-chitosan. SEM and zeta meter studies showed that the nano-chitosan particles were in very smaller sizes having an average value of 39 nm. Also, the solution was stable with no deposition after 30 days. It was also revealed that the treated fir wood enhanced dimensional stability of about 40 % after soaking in water for 24 h. Mechanical properties of the treated woods were not affected due to treatment. Also, the treated sample showed no resistance against both rotting fungi. It means that the nano-chitosan do not protect wood against decaying fungi. However, it can affect physical properties with no reduction in the mechanical properties. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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