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100			_aMohamad Bin Husin
245		0	_aSuitability of rubberwood (Hevea brasiliensis Muell.Arg) for particleboard manufacturing
260			_bDissertation, University microfilms international, 1982 _c1982
520			_aA comprehensive study was undertaken to investigate the technical feasibility of making particleboard from Malaysian rubberwood. Over 72 experimental panels, 2 x 2 feet square and 5/8 inch thick, were made and tested to determine the suitability of the species. The properties evaluated were moulds of rupture, modulud of elasticity, internal bond, water absorption, thickness swell, linear expansion, and screw withdrawal resistance. Comparisons of two levels of resin content (6 and 8 percent), sodium pentachlorophenate preservative, and two levels of wax (1 and 3 percent) were studied. The results were compared with other commonly used particleboard species. Rubberwood chipped with some difficulty, resulting in particles with poor slenderness geometry. The rubberwood used in this study had a specific gravity of 0.57, a pH of 5.7 and shrinking-swelling ratio of 1:7:10(L:R:T). The extractive content averaged 8 percent, of which 50 percent of the extractives were water soluble. No latex was found to be in the xylem. Overall the experimental material in this study led to the conclusion that rubberwood is not an ideal species for particleboard. Further research is recommended, however, to study improved methods for chipping to modify chip geometry and resin efficiency as they affect board properties.
650			_aParticleboard
650			_aRubberwood
942			_cBO
999			_c47986 _d47986