The spectral analysis of absorption and fluorescence parameters of liquefied wood, treated with different solvents
Journal Title: Annals of WULS, Forestry and Wood Technology; Zeszyty naukowe SGGW - Year 2016, Vol 94, Issue
Abstract
The spectral analysis of absorption and fluorescence parameters of liquefied wood, treated with different solvents. The results of the spectroscopic studies on lignin extracted from wood liquefied with the aid of solvents from polyhydroxyl alcohols are presented in this work. Standard pine particles from barked wood were used for the liquefaction experiments. The liquefaction reaction was carried out at an elevated temperature of 130°C with a mixture of glycerine – ethylene glycol (G-EG) and glycerine – propylene glycol (G-PG) and p-toluenesulfonic acid as a catalyst. The products of liquefaction were previously characterized in terms of their lignin and cellulose content and described by the authors. The aim of the studies was to investigate the influence of the used solvents on the lignins’ spectral properties. As a reference sample the lignin extracted from pine without G-EG and G-PG treatment was used.
Authors and Affiliations
Natalia Bielajewska, DOMINIKA JANISZEWSKA
Keywords
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