Decay resistance of Esterified and Oligoesterified rubberwood (Hevea brasiliensis)

Nagaveni H. C., . and Vijayalakshmi G., . and Chauhan S. S., . Decay resistance of Esterified and Oligoesterified rubberwood (Hevea brasiliensis). pp. 588-595. ISSN 0128-1283

Rubberwood samples were chemically modified using a two-step reaction. The wood was esterified with two different dicarboxylic acid anhydrides namely maleic anhydride and phthalic anhydride and subsequently treated with epichlorohydrin to obtain oligoesterified wood. The treated wooden blocks were assessed for bio-resistance against white and brown rot fungi. Maleic anhydride alone treated samples showed resistance only for the brown rot attack but failed to protect against the white rot fungi. Except for the maleic anhydride treatment other treatments showed a weight loss of less than 10. All these treatments can be taken as effective treatments for rubberwood. However the best effect was shown in the combination of phthalic anhydride and epichlorohydrin. This technique was found to be promising as an environmental-friendly method to protect rubberwood against decay fungi and to provide dimensional stability required for better uses of timber. This treatment helps to promote the use of low quality timber such as rubberwood which is a cheaper alternative to primary timber.

Full text available from: Official URL: http://www.frim.gov.my/v1/JTFSOnline/jtfs/v17n4/58...

Abstract

Rubberwood samples were chemically modified using a two-step reaction. The wood was esterified with two different dicarboxylic acid anhydrides namely maleic anhydride and phthalic anhydride and subsequently treated with epichlorohydrin to obtain oligoesterified wood. The treated wooden blocks were assessed for bio-resistance against white and brown rot fungi. Maleic anhydride alone treated samples showed resistance only for the brown rot attack but failed to protect against the white rot fungi. Except for the maleic anhydride treatment other treatments showed a weight loss of less than 10. All these treatments can be taken as effective treatments for rubberwood. However the best effect was shown in the combination of phthalic anhydride and epichlorohydrin. This technique was found to be promising as an environmental-friendly method to protect rubberwood against decay fungi and to provide dimensional stability required for better uses of timber. This treatment helps to promote the use of low quality timber such as rubberwood which is a cheaper alternative to primary timber.

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Item Type:	Article
AGROVOC Term:	Decay
AGROVOC Term:	Esterification
AGROVOC Term:	Hevea brasiliensis
AGROVOC Term:	Maleic acid
AGROVOC Term:	Fungi
AGROVOC Term:	Weight losses
AGROVOC Term:	Timber
AGROVOC Term:	Sapwood
AGROVOC Term:	Heartwood
AGROVOC Term:	Relative humidity
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:27
URI:	http://webagris.upm.edu.my/id/eprint/22172

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