Dimensional stabilization of wood by microporous silica aerogel using in-situ polymerization

Bak, Miklós és Molnár, Ferenc és Rákosa, Rita és Németh, Zsolt és Németh, Róbert (2022) Dimensional stabilization of wood by microporous silica aerogel using in-situ polymerization. WOOD SCIENCE AND TECHNOLOGY, 56 (Early Access: SEP 2022). ISSN 0043-7719

Szöveg Dimensional-stabilization-of-wood-by-microporous-silica-aerogel-using-insitu-polymerizationWood-Science-and-Technology.pdf Download (2MB)

Absztrakt (kivonat)

In this paper, a method for dimensional stabilization of wood through bulk hydrophobization was investigated using a sol–gel process resulting in in-situ formation of microporous SiO 2 aerogel. Two different wood species, beech ( Fagus sylvatica ) and Scots pine ( Pinus sylvestris ) were investigated. The incorporation of microporous silica aerogel inside the cell wall and lumen was verified by scanning electron microscopy, energy dispersive spectrometry and Fourier-transform infrared spectroscopy. A leaching test using paper as model material proved the bonding of the aerogel to the cellulose component of the cell wall, which indicates a long-lasting effect of the treatment. The modification of wood with silica aerogel significantly improved its hygroscopicity and dimensional stability, decreased the equilibrium moisture content and water uptake beside a low weight percent gain. Permeability was reduced as a result of the silica aerogel deposition in the macro- and micropores of the modified wood. The treatment resulted in an obvious colour change as well.

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Mű tipusa:	Cikk
SWORD Depositor:	Teszt Sword
Felhasználó:	Csaba Horváth
A mű MTMT azonosítója:	MTMT:33077918
Dátum:	23 Szep 2022 06:40
Utolsó módosítás:	23 Szep 2022 06:40
URI:	http://publicatio.uni-sopron.hu/id/eprint/2479

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