Home About Browse Search
Svenska


Distribution and curing reactions of melamine formaldehyde resin in cells of impregnation-modified wood

Altgen, Michael and Awais, Muhammad and Altgen, Daniela and Klueppel, Andre and Mäkelä, Mikko and Rautkari, Lauri (2020). Distribution and curing reactions of melamine formaldehyde resin in cells of impregnation-modified wood. Scientific Reports. 10 , 3366
[Journal article]

Full text not available from this repository.

Abstract

Wood modification improves the properties of wood as a building material by altering the wood structure on a cellular level. This study investigated how dimensional changes of wood on a macroscopic scale are related to the cellular level chemical changes on the micron level after impregnation modification with melamine formaldehyde (MF) resin under different heat curing conditions. Our results showed that the curing conditions affected the polycondensation reactions and the morphological structure of the MF resin within the cell lumen. The diffusion of the resin into the cell wall was estimated based on the triazine ring vibration of melamine in the Raman spectrum at 950-990 cm(-1). Thereby, it was shown that macroscopic changes in wood dimensions do not provide a reliable estimate for the cell wall diffusion of the resin. The removal of cell wall constituents during the modification, which was facilitated by the alkaline pH of the impregnation solution, counterbalanced the cell wall bulking effect of the resin. This was particularly evident for wet cured samples, where diffusion of MF resin into the cell wall was observed by confocal Raman microscopy, despite a reduction in macroscopic wood dimensions.

Authors/Creators:Altgen, Michael and Awais, Muhammad and Altgen, Daniela and Klueppel, Andre and Mäkelä, Mikko and Rautkari, Lauri
Title:Distribution and curing reactions of melamine formaldehyde resin in cells of impregnation-modified wood
Year of publishing :2020
Volume:10
Article number:3366
Number of Pages:10
ISSN:2045-2322
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:None
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Wood Science
URN:NBN:urn:nbn:se:slu:epsilon-p-108192
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-108192
Additional ID:
Type of IDID
DOI10.1038/s41598-020-60418-3
Web of Science (WoS)000563226200001
ID Code:17848
Faculty:S - Faculty of Forest Sciences
Department:(S) > Department of Forest Biomaterials and Technology
Deposited By: SLUpub Connector
Deposited On:20 Oct 2020 11:00
Metadata Last Modified:20 Oct 2020 11:01

Repository Staff Only: item control page