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The influence of selected components of essential oils on the mechanical and optical properties of the lignocellulose materials
Authors: Mikala Ondřej
Year: 2015
Type of publication: článek v odborném periodiku
Name of source: Acta Facultatis Xylologiae Zvolen
Page from-to: 81-88
Titles:
Language Name Abstract Keywords
cze Vliv vybraných složek esenciálních olejů na mechanické a optické vlastnosti lignocelulózových materiálů Tato práce byla zaměřena na sledování vlivu nasycených par vybraných složek esenciálních olejů a dvou čistých esenciálních olejů na mechanické a optické vlastnosti plošných papírových materiálů. Pro testování byly zhotoveny vzorky z listnáčové sulfátové buničiny, jehličnanové sulfátové buničiny, sulfitové buničiny, dřevoviny a ze směsi pro výrobu ručního papíru (60 % bavlněných litrů, 40 % lnu). lignocelulózové materiály; esenciální oleje; tuhost; barvová odchylka ΔE*
eng The influence of selected components of essential oils on the mechanical and optical properties of the lignocellulose materials The degradation of cellulose and lignocellulose materials is done by several ways. Some examples could be the hydrolytic cleavage of glycoside bonds, oxidation, photo-oxidation, photolysis and biological attack. The biological attack on cellulose and lignocellulose materials can be caused by bacteria or fungi (moulds). This work is focused on the possibility of using vapours of the selected essential oils or their components to protecting archival materials against biological attacks. Essential oils with the highest bactericidal activity were used. Before use in a real environment, it was necessary to prove whether vapours of these active compounds do not degrade cellulose and lignocellulose materials in the library depositories. For testing of mechanical and optical properties after the exposition in saturated vapours of the active compounds were selected sheets based on the following materials: coniferous sulphate pulp, deciduous sulphate pulp, sulphite pulp, groundwood and pulp for the production of handmade paper. It has been proven that saturated vapours of 7 compounds, which we had tested, had a negative effect on the mechanical properties especially of groundwood material. Change in optical properties is reflected by slight colour variation with a maximum value of 1.41 when applying mixtures of substances no. 2 (limonene, eucalyptol, ocimene) on the material for production of handmade paper. lignocellulose materials; essential oils; bending stiffness; colour difference ΔE*

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