When applying wood preservation, there are chemicals introduced to wood, that influence sorption properties of wood, what sometimes limits usefulness of wood. In order to elucidate those isues, sorption properties of born treated wood were elucidate din this paper and compared to sorption properties of wood treated with other chemicals. Boron was chosen in this experiment as it is often combined with wax emulsions. The results showed, that boron influence sorption properties of treated wood predominately at higher relative humidities.
COBISS.SI-ID: 1691785
In this scientific paper a method that we developed for instantaneous and quick moisture determination of wood is described. NMR method is based on differentiation of NMR FID signal detected in solid state a liquid part of the sample. Sensitivity of proposed method is similar to those at gravimetrical method and can be used in range from green state to oven dry state samples. Mayor benefit of our method is that it is quick and non-invasive because sample doesn’t need to be oven dried.
COBISS.SI-ID: 1705097
For the first time we presented process of cell wall thickening and lignification at weekly intervals during wood formation in mature beech trees. Methods used were light microscopy, cellular UV-microspectrophotometry and transmission electron microscopy. The article was published in he most prominent journal in the field of wood science.
COBISS.SI-ID: 1733257
The excess solvolysis reagent – diethylene glycol – was removed from liquefied poplar wood by rotary evaporation. Afterwards, cured films were prepared by self-crosslinking at an elevated temperature. The research represents a novel approach in the field of liquefied lignocellulosics. Up to our best knowledge, for the first time, the cured surface films have been prepared from liquefied wood without added curing agents. The results open a new chapter in more effective usage of liquefied biomass.
COBISS.SI-ID: 1703049
Low-density hybrid poplar was densified with viscoelastic thermal compression (VTC) process to achieve 63 %, 98 % and 132 % degree of densification. The morphology and density profile of the VTC specimens were studied. Microscopic observation revealed that the deformations in the VTC wood were mostly the result of the viscous buckling of cell walls without fracture. The volume of the void areas in the specimens decreased with the degree of densification. It was confirmed that low-density wood species modified by VTC can be successfully used for the production of wood-based composites.
COBISS.SI-ID: 1655177