Biotehniška fakulteta, Ljubljana - vsi oddelki (BFLJ)
  • The influence of viscoelastic thermal compression on the chemistry and surface energetics of wood
    Kutnar, Andreja ...
    The influence of the viscoelastic thermal compression (VTC) ofwood on its surface chemistry,wettability, and surface free energywas evaluated. The changes in surface chemistrywere studied by means of ... Fourier transform infrared spectroscopy (FTIR). Wettability was determined on the basis of the contact angle of water, using the Wilhelmy plate method. Surface free energy was determined according to the Owens Wendt Rabel and Kaelble (OWRK) theory, using the contact angle data of diiodomethane and formamide. The studied material was wood of the low-density hybrid poplar (Populus deltoides*Populus trichocarpa), whichwas densified to three different degrees of densification (63%, 98%, and 132%) using the VTC process. The results, based on the FTIR spectra, revealed that the VTC process caused minor chemical changes on the wood surface. However, wettability changed significantly. The VTC wood surface exhibits rather hydrophobic behaviour. Evaluation of the surface energetics using the OWRK approach showed that total surface free energy dropped significantly due to the VTC process.
    Vir: Colloids and surfaces. A, Physicochemical and Engineering Aspects. - ISSN 0927-7757 (Vol. 329, 2008, str. 82-86)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2008
    Jezik - angleški
    COBISS.SI-ID - 1655433
    DOI

Vnos na polico