Technological and chemical properties of chestnut (Castanea sativa Mill.) wood after heat treatment

Abstract

This study was performed to determine the effects of heat treatment on air-dry density (D(m)), oven-dry density (D(0)), shrinkage (beta), swelling (alpha), fiber saturation point (FSP), compression strength parallel to grain (sigma(cII)), bending strength (sigma(h)), modulus of elasticity (MOE) in bending, brinell-hardness (Hid, equilibrium moisture content (EMC), chemical content and cellulose crystallinity of chestnut (Castanea saliva Mill.) wood. Wood samples were treated to heat at three different temperature (130, 180 and 230 degrees C) and two different time level (2 and 8 h) under atmospheric pressure and presence of air. D(rn), D(0), beta, alpha, FSP, EMC, sigma(cII), sigma(b) and MOE were decreased b, heat treatment. Lignin content, 1% NaOH and alcohol solubility values increased with depend on the heating temperature and time. Cellulose crystallinity of the samples was not changed significantly