Inorganic component in oak waterlogged archaeological wood and volcanic lake compartments
Author(s)
Date Issued
2023
Type
article
Volume
20
Issue
15
Start Page
3137
End Page
3149
Journal
Abstract
Abstract: Wood coatings prolong the service life of wood-based products, but they are usually
of synthetic origin. The aim of the present article is to reduce the fossil-based compounds in a
commercial waterborne acrylic coating by CNC addition and to test its performance. The coatings
were applied on European beech and Norway spruce wood in order to test durability against
Gloeophyllum trabeum (brown wood rot) and Trametes versicolor (white wood rot). Artificial weathering
and blue stain, contact angle, physical tests (adhesion, impact and scratch test), chemical (FTIR) and
morpho-anatomical analysis (SEM) were carried out. CNC addition increased viscosity, limiting the
spreading of the coating into wood pores as visible after SEM observation, which reduced coating
adhesion on the substrate. CNC improved fungal resistance as seen by a reduced mass loss and FTIR
spectroscopy thanks to crosslinks formation, which reduced water sorption as well. Color change was
not significant, and, on the other hand, glossiness was reduced but resulted as more homogeneous
than control. CNC addition gave good results also in blue stain protection. CNC improved scratch
resistance, but no visible change to impact was registered. CNC has promising results in coatings
depending on wood and fungal species and presence of further commercial additives (biocides).
Subjects
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Name
2023 - egusphere-2022-1498-typeset_manuscript-version3-final proofreading.pdf
Size
5.56 MB
Format
Adobe PDF
Checksum (MD5)
2f4511950beab8313df2c08b6cca9aa3
Project(s)
woodpdlake