The effects of heat treatment on some mechanical properties of laminated black pine (Pinus nigra)
Black pine (Pinus nigra) has high industrial usage potential and large plantation in Turkey. Larch wood was treated with heat to determine its mechanical properties, such as bending strength and pressure and order to determine its adhesion strength. Laminating adhesives are used for the construction of polyvinyl acetate and polyurethane. Heat treatment was applied to the samples at 100-150°C for 4 h in drying oven. In the result of the experiments, heat treated samples give better results due to temperature increase. 
 
   
 
 Key words: Heat treatment, bending strength, compression strength, bonding strength, black pine.
Chemical Modification of Wood
After millions of years of evolution, wood was designed to perform in a wet environment, and nature is programmed to recycle it, in a timely way, back to the basic building blocks of carbon dioxide and water through biological, thermal, aqueous, photochemical, chemical, and mechanical degradation. The properties of wood are, for the most part, a result of the chemistry of its cell wall components. The polysaccharides (cellulose and hemicelluloses) are mainly responsible for (i) moisture uptake and release in changing environments that result in changes in wood volume (dimensional instability), (ii) recognition mechanisms for biological degradation (attack by fungi, termites, etc.), (iii) thermal instability (pyrolysis and burning), (iv) chemical degradation (by acids and bases), and, to some degree, (v) degradation due to ultraviolet radiation (weathering, lignin degradation).
Dimensional stabilization of wood: Part 5. Phthaloylation
Phthaloylation imparts to wood the highest degree of dimensional stability yet observed, but because of the partially temporary character of the stability it imparts, phthaloylated wood could only be used to advantage as a dimensionally stable product in cases where the wood is subjected to normal changes in atmospheric humidity but not to soaking.