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Characterisation of...
Characterisation of Moisture in Scots Pine (Pinus sylvestris L.) Sapwood Modified with Maleic Anhydride and Sodium Hypophosphite
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- Kim, Injeong (författare)
- Luleå tekniska universitet,Träteknik
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- Thybring, Emil Engelund (författare)
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, 1958 Frederiksberg C, Denmark
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- Karlsson, Olov (författare)
- Luleå tekniska universitet,Träteknik
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- Jones, Dennis (författare)
- Luleå tekniska universitet,Träteknik,Praha 6-Suchdol, Czech University of Life Sciences Prague, Kamýcká 1176, 16521 Prague, Czech Republic
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- Mantanis, George I. (författare)
- Laboratory of Wood Science and Technology, Department of Forestry, Wood Sciences and Design, University of Thessaly, Griva 11, 43100 Karditsa, Greece
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- Sandberg, Dick, 1967- (författare)
- Luleå tekniska universitet,Träteknik,Praha 6-Suchdol, Czech University of Life Sciences Prague, Kamýcká 1176, 16521 Prague, Czech Republic
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(creator_code:org_t)
- 2021-09-29
- 2021
- Engelska.
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Ingår i: Forests. - : MDPI. - 1999-4907 .- 1999-4907. ; 12:10
- Relaterad länk:
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https://www.mdpi.com...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- In this study, the wood–water interactions in Scots pine sapwood modified with maleic anhydride (MA) and sodium hypophosphite (SHP) was studied in the water-saturated state. The water in wood was studied with low field nuclear magnetic resonance (LFNMR) and the hydrophilicity of cell walls was studied by infrared spectroscopy after deuteration using liquid D2O. The results of LFNMR showed that the spin–spin relaxation (T2) time of cell wall water decreased by modification, while T2 of capillary water increased. Furthermore, the moisture content and the amount of water in cell walls of modified wood were lower than for unmodified samples at the water-saturated state. Although the amount of accessible hydroxyl groups in modified wood did not show any significant difference compared with unmodified wood, the increase in T2 of capillary water indicates a decreased affinity of the wood cell wall to water. However, for the cell wall water, the physical confinement within the cell walls seemed to overrule the weaker wood–water interactions.
Ämnesord
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Trävetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Wood Science (hsv//eng)
Nyckelord
- wood modification
- maleic anhydride
- sodium hypophosphite
- moisture
- deuterium exchange
- Träteknik
- Wood Science and Engineering
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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