Influence of milling and sanding on beech wood surface properties. Part II. Wetting and thermo-dynamical characteristics of wood surface
Journal Title: Annals of WULS, Forestry and Wood Technology; Zeszyty naukowe SGGW - Year 2016, Vol 95, Issue 1
Abstract
The aim of the second part has been to investigate the influence of beech wood mechanical treatment on wood surface wetting with standard apolar and polar-apolar liquids. Experimentally measured contact angles formed by drops situated on different treated beech wood surfaces were used for calculation of wood surface free energy together with its disperse and polar components. The experimental results show that the diverse mechanical treatments of beech wood surface differed not only in their impact on the surface morphology but also on the wetting process and surface free energy of beech wood. The milled surfaces displayed worse wetting compared to the sanded ones. This was reflected in higher contact angle values. The determined surface free energy values of beech wood were higher for sanded surfaces. There were also observed differences in the ratio between the disperse and polar components. The results obtained document that each of the surface treatments tested meets requirements for ensuring high surface treatment quality. More suitable, however, from this viewpoint was the wood surface treated by sanding. Keywords:
Authors and Affiliations
JOZEF KÚDELA, LEOŠ MRENICA, ĽUBOMÍR JAVOREK
Keywords
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