Effects of Wood Modification Using Natural Resin on Wood Quality and Bonding Properties

Muhammad Navis Rofii, Ragil Widyorini, Ganis Lukmandaru

Abstract


The aim of this study was to investigate the effect of gum rosin impregnation upon a low quality young teak wood in order to enhance its quality. The main objective of the treatment was to enhance the dimensional stability, as well as strength and to reduce the hygroscopicity. A 15-years old thinned teak wood (Tectona grandis L.f.) and gum rosin from Pinus merkusii Jungh. et de Vries were used for wood modification treatment by impregnation. Three kinds of non-polar solvents, i.e. turpentine oil, petroleum oil and n-hexane-, were used to make gum rosin solution. The results indicated that gum rosin impregnation did not markedly enhance the quality of young teak wood in terms of either dimensional stability or hygroscopicity; however, a little enhancement was delivered by using 15% gum rosin solution with n-hexane as the solvent. The treatment with petroleum oil solvent (at concentration of 7.5%) and at 15% concentration with n-hexane solvent resulted in highest bending properties. The highest bonding strength in dry condition was resulted by treatment with turpentine oil solvent.

Keywords


Wood modification; young teak wood; natural resin; non-polar solvent; wood quality; bonding properties

Full Text:

PDF

References


British Standard. 1957. Methods of Testing Small Clear Specimens of Timber. BS 373. British Standards Institution. London.

European Standard. 1993. Plywood, Bonding Quality. Part 1: Test method. EN-314-1. European Committee for Standardization. Brussels.

Hill, C.A.S. 2006. Wood Modification: Chemical, Thermal and Other Processes. John Wiley & Son, Ltd. Chicester. England. p.239.

Hyvonen, A.; P. Piltonen; J. Niinimaki. 2006. Tall Oil/Water-Emulsions as Water Repellents for Scots Pine Sapwood. Holz Roh Werkst 64: 68-73.

Rowell, R.M.; W.B. Banks. 1985. Water Repellency and Dimensional Stability of Wood. General Technical Report FPL-50. US Department of Agriculture, Forest Service, Forest Products Laboratory. Madison. p.24.

Scholz, G.; A. Krause; H. Militz. 2010. Exploratory Study on the Impregnation of Scots Pine Sapwood (Pinus sylvestris L.) and European Beech (Fagus sylvatica L.) with Different Hot Melting Waxes. Wood Sci Tech 44: 379-388.

Sernek, M.; M.J. Boonstra; A. Pizzi; A. Despres; P. Gerardin. 2008. Bonding Performance of Heat-Treated Wood with Structural Adhesives. Holz Roh Werkst 66: 173-180.

Voulgaridis, E.V. 1993. Oleoresin and Gum Rosin from Pinus halepensis Mill as Basic Constituents in Water Repellent Formulation Applied to Wood. Holz Roh Werkst 51: 324-328.


Refbacks

  • There are currently no refbacks.


WOOD RESEARCH JOURNAL INDEXED BY: