Effect of Heartwood Extractives of Elaeagnus Angustifolia L. on the Thermal Properties

Document Type : Original Article

Author

PhD. Student, Department of Wood and Paper Science and Technology, Faculty of Natural Resources , University of Tehran, Tehran, Iran.

Abstract

To investigate the effect of wood extractives on thermal properties, wood of Elaeagnus angustifolia L. species was provided from the southern region of Hamadan. The Heartwood part was turned into wood powder.  Extraction of wood powder have been with Soxhlet method using ethanol-toluene solvents and in accordance with ASTM: D 1107-96 standard, T 204 OS-76 method. The extracted and unextracted wood powders, were examined by Thermal analysis device. The obtained graphs of Thermogravimetric analysis (TGA), Derivative of Thermogravimetric analysis (DTG) and Differential Thermal analysis (DTA) showed the wood extractives were the cause of occurred the weight loss due to degradation at higher temperature. Wood­ extractives have reduce on the degradation rate of thermal decomposition. The presence of extractives in wood caused greater thermal energy release due to the burning of these materials. The findings of this study demonstrated that the extractive materials in this wood increased thermal resistance.

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References

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Karafan Quarterly Scientific Journal
Volume 18, Issue 4 - Serial Number 56
Agriculture / Art & Architecture
February 2022
Pages 227-235

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History

  • Receive Date: 17 May 2021
  • Revise Date: 08 July 2021
  • Accept Date: 26 July 2021

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