Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Studying amount, location and state of water in modified wood at moisture levels relevant for fungal degradation
Water is an essential parameter for fungal degradation of wood, but degradation primarily occursat high moisture levels at water potential in the range of -4 to -0.1 MPa, which corresponds to 97-99.9% relative humidity. At these moisture levels, water is present in the wood structure both inand outside of cell walls. The majority of previous studies on the interaction between wood andwater for untreated as well as modified wood has, however, focused on the moisture range 0-95%relative humidity and mainly on water in cell walls. In this paper, we give examples of how preciseconditioning of specimens using the pressure plate technique can be combined with otherexperimental techniques in order to get information on interactions between wood and water athumidity levels relevant for fungal degradation. We show examples of how pressure plateconditioning can be combined with Differential Scanning Calorimetry (DSC) and Low FieldMagnetic Resonance (LFNMR) to get information not only about amount of water, but also aboutlocation and state of water in untreated and modified wood. Further use of such combination oftechniques has potential to give valuable pieces of information on the role of water in degradationprocesses for untreated as well as modified wood.
Studying amount, location and state of water in modified wood at moisture levels relevant for fungal degradation
Water is an essential parameter for fungal degradation of wood, but degradation primarily occursat high moisture levels at water potential in the range of -4 to -0.1 MPa, which corresponds to 97-99.9% relative humidity. At these moisture levels, water is present in the wood structure both inand outside of cell walls. The majority of previous studies on the interaction between wood andwater for untreated as well as modified wood has, however, focused on the moisture range 0-95%relative humidity and mainly on water in cell walls. In this paper, we give examples of how preciseconditioning of specimens using the pressure plate technique can be combined with otherexperimental techniques in order to get information on interactions between wood and water athumidity levels relevant for fungal degradation. We show examples of how pressure plateconditioning can be combined with Differential Scanning Calorimetry (DSC) and Low FieldMagnetic Resonance (LFNMR) to get information not only about amount of water, but also aboutlocation and state of water in untreated and modified wood. Further use of such combination oftechniques has potential to give valuable pieces of information on the role of water in degradationprocesses for untreated as well as modified wood.
Studying amount, location and state of water in modified wood at moisture levels relevant for fungal degradation
Fredriksson, Maria (Autor:in) / Thybring, Emil (Autor:in) / Digaitis, Ramunas (Autor:in)
01.01.2020
Proceedings IRG Annual Meeting; 2020, no IRG/WP 20-40889 (2020) ; ISSN: 2000-8953
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
DDC:
690
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