Oil heat treatment of wood and bamboo: processes, properties, applications, issues and challenges
2015
Manalo, R.D.
For the past thirty years, wood and non-wood modification technologies for wood and non-wood forest products have been developed to improve its properties. Modification involves the action of a chemical, biological or physical agent upon the material, resulting in a desired property enhancement during the service life of the modified forest products (Hill 2006). The professorial lecture discussed the results of the proponent on the use of thermal modification using oil as a single process and in combination with chemical impregnation on the properties of forest products including three species of bamboo- Bambusa blumeana J.A. and J.H. Schultes (Kawayang tinik), Bambusa vulgaris Schrader ex Wendland (Kawayang kiling), and Dendrocalamus asper (Schultes f.) Backer ex Heyne (Giant Bamboo) and three industrial three plantation species- Gmelina arborea Roxb. (Gmelina), Swietenia macrophylla King (Big-leaf Mahogany) and Paraserianthes falcataria (L.) (Moluccan sau). Oil heat treatment affected most of the properties of bamboo and wood including its physical, mechanical, chemical as well as its durability against biodeteriorating agents like decay fungi and subterranean termiteds. There are positive and negative effects. Combining this process which chemical impregnation resulted in addressing some of the shortcomings of oil heat treatment alone. The lecture is part of the department's continuing research on the development and use of state of the art processes that can be applied by the forest based industries to sustainably utilize limited forest resources.
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