Chemical properties of modified cedar wood

Abstract

In this study, physical and chemical properties of heat treated cedar (Cedrus libani A. Rich.) wood were investigated. Heat treatment was carried out at four different temperatures (120, 150, 180 and 210 °C) and three different time period (2, 5 and 8 hours). The chemical properties of the obtained samples were determined using FT-Infrared spectroscopy. Heat treatment generally causes changes in the cell wall, hemicellulose degradation and reduction, long chain molecule modification, and accessible OH groups in wood. The hydroxyl group changes (H1429/897) were determined, and the crystal structure after 8 hours of heat treatment was 1.21, 1.33, 1.25, and 1.14, respectively. Changes in the cellulose chains were detected at the peak (A1370/670) and showed differences with the control sample at four different temperatures (120,150, 180, and 210°C) and in an 8-hour time period (3.13, 3.60, 3.33, 1.29) values were obtained. Carbonyl peaks at 1740nm increased with time and heating periods. The most apparent changes takes place at 180 and 210 °C for 8 hours treatment.

Keywords

• heat treatment
• chemical properties
• modification
• cedar
• ftir
• isıl işlem
• kimyasal özellikler
• modifikasyon
• sedir