SciELO - Scientific Electronic Library Online

 
vol.20 número3The impact of density and mixture ratio of melamine on some properties of oriented strand boardThe wettability and surface free energy of sawn, sliced and sanded european oak wood índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Compartir


Maderas. Ciencia y tecnología

versión On-line ISSN 0718-221X

Resumen

GONULTAS, Oktay  y  CANDAN, Zeki. Chemical characterization and ftir spectroscopy of thermally compressed eucalyptus wood panels. Maderas, Cienc. tecnol. [online]. 2018, vol.20, n.3, pp.431-442. ISSN 0718-221X.  http://dx.doi.org/10.4067/S0718-221X2018005031301.

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.

Palabras clave : Cell wall components; chemical composition; Eucalyptus camaldulensis; thermal modification; wood composites; wood solubility.

        · texto en Inglés     · Inglés ( pdf )