Agricultural Studies, Vol. 4, Issue 3, Jun  2020, Pages 27-39; DOI:

Impact of Freeze and Silicone Oil Treatments on Hygroscopic and Chemical Components of Two Fast-Growing Species

Agricultural Studies, Vol. 4, Issue 3, Jun  2020, Pages 27-39.


Kufre Edet Okon 1* , Ebenezer Adeyemi Iyiola 2 , Queen Aguma 3 , Ojo Adedeji Robert 4

1 Department of Forestry and Wildlife, Faculty of Agriculture, University of Uyo, Uyo, Nigeria

2 Department of Forestry and Wood Technology, Federal University of Technology, Akure, Nigeria

3 Department of Forestry and Wildlife Management, University of Port Harcourt, Port Harcourt, Nigeria

4 Forestry Development and Utilization Unit, Forestry Research Institute of Nigeria, Oyo, Nigeria

Received: 20 May 2020; Accepted: 10 June 2020; Published: 25 June 2020

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The objective of this work was to study the impacts of freezing and silicone oil treatments in relation to hygroscopic and chemical constituents of two fast-growing (Firmiana simplex L. and Pinus massoniana L.) wood species. Five experiments were carried out and then compared to control: Freezing-treatment (F), freezing-silicone oil treatments (FSOT180 and FSOT210) and silicone oil treatments (SOT180 and SOT210). The freezing-treatment phase was conducted at -22 °C for 168 h and silicone oil treatment phase at 180 and 210 °C for 4 h. Hygroscopic properties and chemical constituent were determined. The hygroscopicity of the treated woods were decreased and their chemical structures were transformed. The high treatment temperature degraded the chemical constituents of the wood and XRD showed that the amorphous cellulose was affected in the treated wood. This study revealed that silicone oil and freezing treatments could be used to improve the wood properties of the selected wood species.


Silicone Oil Treatment, Water Absorption, Volumetric Shrinkage, Amorphous Cellulose, Thermal Modification


© 2017 by the authors. Licensee International Technology and Science Press Limited. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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