A new wood-modification process based on in situ grafting of urethane groups: biological resistance and dimensional stability of carbamylated Scots pine wood
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F23%3A97091" target="_blank" >RIV/60460709:41320/23:97091 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1080/17480272.2023.2207541" target="_blank" >http://dx.doi.org/10.1080/17480272.2023.2207541</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/17480272.2023.2207541" target="_blank" >10.1080/17480272.2023.2207541</a>
Alternative languages
Result language
angličtina
Original language name
A new wood-modification process based on in situ grafting of urethane groups: biological resistance and dimensional stability of carbamylated Scots pine wood
Original language description
Chemical modification of wood typically requires the impregnation of wood with reactive compounds capable of undergoing covalent bonding to functional groups present in the cell wall. Creating such reactive agents in situ, with the use of low-priced chemicals, would prove more attractive for commercial applications. In this study, Scots pine (Pinus sylvestris L.) sapwood was impregnated with an aqueous solution of urea (30%), dried at 40 degrees C for 24 h, and subsequently heat treated in an oven at 150 degrees C for 24 h to produce the reactive isocyanic acid. By using accelerated fungal tests under laboratory conditions, provisional tests demonstrated a high biological resistance against selected moulds and rots. Migration of urea into the wood structure and grafting to its polymers during subsequent heat treatment, led to a bulked cell wall and enhanced resistance to water swelling, even after cycling water treatments. The bending strength (MOR) of modified pine wood was reduced by the treatment applied, while its modulus of elasticity (MOE) remained unchanged.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20502 - Paper and wood
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Wood Material Science and Engineering
ISSN
1748-0272
e-ISSN
1748-0272
Volume of the periodical
18
Issue of the periodical within the volume
3
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
3
Pages from-to
1160-1162
UT code for WoS article
000991623500001
EID of the result in the Scopus database
2-s2.0-85159810327