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Studying amount, location and state of water in modified wood at moisture levels relevant for fungal degradation

Fredriksson, Maria LU orcid ; Thybring, Emil and Digaitis, Ramunas LU (2020) In Proceedings IRG Annual Meeting 2020.
Abstract
Water is an essential parameter for fungal degradation of wood, but degradation primarily occurs
at 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 in
and outside of cell walls. The majority of previous studies on the interaction between wood and
water 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 precise
conditioning of specimens using the pressure plate technique can be combined with other
experimental techniques in order to get... (More)
Water is an essential parameter for fungal degradation of wood, but degradation primarily occurs
at 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 in
and outside of cell walls. The majority of previous studies on the interaction between wood and
water 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 precise
conditioning of specimens using the pressure plate technique can be combined with other
experimental techniques in order to get information on interactions between wood and water at
humidity levels relevant for fungal degradation. We show examples of how pressure plate
conditioning can be combined with Differential Scanning Calorimetry (DSC) and Low Field
Magnetic Resonance (LFNMR) to get information not only about amount of water, but also about
location and state of water in untreated and modified wood. Further use of such combination of
techniques has potential to give valuable pieces of information on the role of water in degradation
processes for untreated as well as modified wood. (Less)
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type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Proceedings of the International Research Group on Wood Protection (IRG) Annual Meeting (ISSN 2000-8953)
series title
Proceedings IRG Annual Meeting
volume
2020
article number
IRG/WP 20-40889
publisher
The International Research Group on Wood Protection
ISSN
2000-8953
language
English
LU publication?
yes
id
124e13c9-b15c-4dfc-b5fc-e8083a846761
date added to LUP
2023-03-25 14:19:10
date last changed
2023-04-05 02:46:50
@inproceedings{124e13c9-b15c-4dfc-b5fc-e8083a846761,
  abstract     = {{Water is an essential parameter for fungal degradation of wood, but degradation primarily occurs<br/>at high moisture levels at water potential in the range of -4 to -0.1 MPa, which corresponds to 97-<br/>99.9% relative humidity. At these moisture levels, water is present in the wood structure both in<br/>and outside of cell walls. The majority of previous studies on the interaction between wood and<br/>water for untreated as well as modified wood has, however, focused on the moisture range 0-95%<br/>relative humidity and mainly on water in cell walls. In this paper, we give examples of how precise<br/>conditioning of specimens using the pressure plate technique can be combined with other<br/>experimental techniques in order to get information on interactions between wood and water at<br/>humidity levels relevant for fungal degradation. We show examples of how pressure plate<br/>conditioning can be combined with Differential Scanning Calorimetry (DSC) and Low Field<br/>Magnetic Resonance (LFNMR) to get information not only about amount of water, but also about<br/>location and state of water in untreated and modified wood. Further use of such combination of<br/>techniques has potential to give valuable pieces of information on the role of water in degradation<br/>processes for untreated as well as modified wood.}},
  author       = {{Fredriksson, Maria and Thybring, Emil and Digaitis, Ramunas}},
  booktitle    = {{Proceedings of the International Research Group on Wood Protection (IRG) Annual Meeting (ISSN 2000-8953)}},
  issn         = {{2000-8953}},
  language     = {{eng}},
  publisher    = {{The International Research Group on Wood Protection}},
  series       = {{Proceedings IRG Annual Meeting}},
  title        = {{Studying amount, location and state of water in modified wood at moisture levels relevant for fungal degradation}},
  url          = {{https://lup.lub.lu.se/search/files/141450862/IRG_20_40889.pdf}},
  volume       = {{2020}},
  year         = {{2020}},
}