Chemical characterization and ftir spectroscopy of thermally compressed eucalyptus wood panels

Maderas: ciencia y tecnologia

Gonultas, Oktay¹  Candan, Zeki² 

[1] Bursa Technical University, Bursa, Turkey;Istanbul University, Istanbul, Turkey

关键词: Cell wall components;    chemical composition;    Eucalyptus camaldulensis;    thermal modification;    wood composites;    wood solubility.;   

DOI  :  10.4067/S0718-221X2018005031301

学科分类：农业科学（综合）

来源: Universidad del Bio-Bio

【 摘 要 】

In this study, the change in the chemical properties of the thermally modified eucalyptus (Eucalyptus camaldulensis) wood boards were examined by wet chemical analysis and FTIR spectroscopy. The eucalyptus wood boards were modified with a laboratory type hot-press for four different groups at press pressures of 2 or 4 MPa and temperatures of 150°C or 180°C and compared to untreated control. After this, hot water, 1% NaOH, ethanol-cyclohexane, ethanol, and methanol-water solubility values were determined for the treated samples. In addition, the content of klason lignin, acid soluble lignin, holocellulose, and α-cellulose were investigated. The solubility values (except for the ethanol solubility) increased in the modified wood when compared to the untreated control. A decrease in the content of acid soluble lignin, holocellulose and α-cellulose was observed while the content of klason lignin in the modified wood was increased. According to the FTIR analysis results, significant changes were observed in the spectra of the modified samples. These findings were in agreement with the results of wet chemical analysis.

【 授权许可】

CC BY-NC