@Article{jrm.2023.043657,
AUTHOR = {Demiao Chu, Redžo Hasanagić, Leila Fathi, Mohsen Bahmani, Miha Humar},
TITLE = {Water Absorption Capacity and Coating Adhesion on Thermally Modified and Not-Modified Spruce Wood (Blue Stained or Free of Blue Stained)},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {11},
YEAR = {2023},
NUMBER = {12},
PAGES = {4061--4078},
URL = {http://www.techscience.com/jrm/v11n12/54552},
ISSN = {2164-6341},
ABSTRACT = {This study aimed to investigate the water absorption capacity of thermally modified and non-modified spruce and
blue-stained spruce wood. The wettability of wood depends on various factors, including its type, density, porosity, and surface treatment. Wood can swell and become distorted when exposed to water or humidity, impacting
its structural integrity. Hence, it is crucial to consider the water and water vapour uptake in the wood when
choosing materials for applications that are likely to be exposed to moisture. Various moisture absorption tests
were conducted to assess water absorption capacity, including short-term and long-term water absorption and
water vapour absorption. The results showed a significant difference in the long-term exposure to water, which
was related to the density of the wood. The study examined the influence of thermal treatment on the physical
properties of wood and observed significant variations in mass change due to coating, indicating differences in
adhesion among different wood types. Vacuum-treated blue-stained Norway spruce demonstrated higher adhesion (5%–15%) compared to air-treated samples. Furthermore, cohesion tests revealed lower cohesion force in
blue-stained Norway spruce (approximately 20%–30%) compared to Norway spruce. The study also used industry-standard tests to investigate the adhesion and cohesion of nano-coatings on wood surfaces. The results provided valuable information on the properties of coatings applied to wood, which is vital in protecting and
decorating wood while also providing preventive protection against wood pests, weathering, and mechanical
influences. Wood modification in vacuum involves subjecting the wood to a low-pressure environment to remove
air and moisture, allowing for deeper and more uniform penetration of treatment chemicals. In contrast, wood
modification in air relies on the natural circulation of air to facilitate the absorption of chemical treatments, without the need for a vacuum chamber.},
DOI = {10.32604/jrm.2023.043657}
}