The heat treatment of wood is an environment-friendly method for preservation.The process only uses steam and heat, no chemicals or agents are applied to the material during process.Tests have shown harmful emissions apparent when working with material.This improves wood's resistance decay its dimensional stability.In this study, density, compression strength hardness treated hornbeam (Carpinus betulus L.) were investigated.Wood specimens that had been conditioned at 65% relative humidity 20...

Changes in the chemical structure of hornbeam and uludag fir woods during thermal treatment were investigated at three temperatures (170, 190, 210 oC) durations (4, 8, 12 hours). After treatment, extents degradation samples determined, effects on composition wood investigated. The data obtained analyzed using variance analysis, Tukey’s test was used to determine changes woods. results showed that heating permanently several its structures are mainly caused by polymers. It found decreasing...

The aim of this study was to determine the changes in physical properties Paulownia (Paulownia elongata) wood, a fast-growing species, during heat treatment at three different temperatures (160, 180, and 200°C) durations (3, 5, 7 h). After treatment, swelling, density, color, equilibrium moisture content 35, 65, 85% RH were investigated. results indicated that minimum maximum decrease swelling ratios 6–46% for tangential, 4–32% radial, 12–64% longitudinal. contents 1–26% 35% RH, 1–33% 65%...

The aim of this study was to investigate the effects cellulose nanofibrils and nanoclays on mechanical, thermal, morphological properties polyhydroxybutyrate polylactic acid bio-polymers. Polyhydroxybutyrate as a polymer matrix reinforcing nano-fillers were used prepare biopolymer nanocomposites in twin screw extruder. Density, flexure strength modulus, tensile impact strength, thermal properties, characterization obtained determined. According results, densities found decrease with addition...

Abstract The goal of this study was to determine the changes in specific gravity and equilibrium moisture content fir (Abies nordmanniana subsp. bornmülleriana Mattf.) wood after heat treatment at different temperatures durations. In study, effects three durations were investigated. 170, 190, 210°C, 4, 8, 12 h. contents heat-treated specimens determined 20°C relative humidities 35, 50, 65, 80, 90%, results compared with control specimens. indicated that increasing increased weight loss With...

Changes in chemical constituents and some physical properties such as swelling water absorption of hornbeam (Carpinus betulus L) uludag fir (Abies bornmulleriana Mattf.) wood were investigated after heat treatment at three different temperatures (170 oC, 190 210 oC) for durations (4, 8, 12 hours) by using thermal gravimetric analysis (TGA) Fourier transform infrared (FTIR) spectrometry. The results TGA show that there was less weight loss the main degradation region (300-500 heat-treated...

Thermal treatment of wood alters its structure due to degradation polymers (cellulose, hemicellulose, and lignin), so the physical properties are either improved or worsen. In this study, effect thermal on density, equilibrium moisture content (EMC), color hornbeam was investigated. The density (air-dry oven-dry density) were determined for control heat-treated samples, as well their at relative humidities 35, 50, 65, 80, 95%. data showed that resulted mainly in darkening reduction EMC. It...

In this study, the effects of heat treatment on color, mass loss, compression strength, and hardness Uludag fir (Abies bornmulleriana Mattf.) were investigated. Wood specimens conditioned at a relative humidity 65% temperature 20°C subjected to 170, 190, 210°C for 4, 8, 12 h. After treatment, strength determined according TS 2595 2479. Color changes DIN5033. The results showed that wood decreased varying extents in relation intensity whereas loss increased. We had more significant effect...

TiO2 filled Polypropylene (PP) nanocomposites were prepared with a single screw extruder and then by injection molding of the blends. Water absorption, density, mechanical properties, morphological characterization, FTIR analysis, thermal stabilities investigated. The results showed that water absorption decreased density increased as amount nano-TiO2 added increased. properties improved for all formulations addition nano-TiO2, except tensile modulus elasticity izod impact strength....

Abstract The aim of this study was to determine the effects cellulosic fillers on conventional and dynamic mechanical, thermal, morphological, rheological properties polyhydroxybutyrate (PHB) biopolymers. Polyhydroxybutyrate as a biopolymer matrix including wood flour, microcrystalline cellulose, cellulose nanofibrils (0.5 5 wt%) reinforcing agents were used produce composite. According results obtained, addition 0.5 wt% improved both flexural tensile moduli elasticity but other filler...

Digital image correlation (DIC) was used to examine the strain distribution of heat-treated beech and Uludag fir woods in mechanical testing. It also evaluated effects heat treatment process on properties wood samples. The physical (mass/density loss, dimensional stability, color change, surface roughness), (flexure test compressive strength), morphological, thermal, structural were examined. determined that parameters can be optimized using DIC method. results showed although provide...

The objective of this study is to evaluate the effect décor paper and resin type on physical properties, mechanic surface quality properties particleboards coated with papers impregnated by using different resin. White oak, New wenge common maple pattern decor urea formaldehyde (UF), melamine (MF) urea-melamine (UF+MF) were used as coating materials. Particleboard was laminated these materials hydraulic press. As a result, specimens MF-impregnated showed better performance than those UF...

Abstract In this study, the influence of thermal treatment on color changes six different wood materials was investigated. Test specimens were subjected to three temperatures (160, 180, and 200°C) durations (3, 5, 7 h). The data obtained analyzed using variance analysis, then statistical analysis Tukey's test conducted. After treatment, results showed that values changed significantly. It determined L* (lightness) decreased; minimum change in ∼4% for Juniper wood, maximum ∼64% Beech wood. a*...

Weathering performance of Oak (Quercus petrae) and Chestnut (Castanea sativa) as well various exterior coatings were investigated. Alkyd primer + alkyd paint resin varnish increased the glossiness in chestnut oak, respectively. Besides, acrylic stain had little effect on change for both species. However, significantly decreased not only but also oak after weathering. Acrylic receded total color (ΔE*) compared with or stain. Alkyd-based showed much better against atmospheric conditions other...