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Fabrication of highly stable and durable furfurylated wood materials. Part II: the multi-scale distribution of furfuryl alcohol (FA) resin in wood

Authors
  • Li, Wanju1, 2
  • Liu, Minghui2
  • Wang, Hankun2
  • Yu, Yan2, 3
  • 1 Protection and Utilization, Guangdong Academy of Forestry, PR China , (China)
  • 2 International Center for Bamboo and Rattan, PR China , (China)
  • 3 Fujian Agriculture and Forestry University, PR China , (China)
Type
Published Article
Journal
Holzforschung
Publisher
De Gruyter
Publication Date
Jun 29, 2020
Volume
74
Issue
12
Pages
1147–1155
Identifiers
DOI: 10.1515/hf-2019-0287
Source
De Gruyter
Keywords
License
Yellow

Abstract

The aim of this investigation was mainly to evaluate the multi-scale distribution of furfuryl alcohol (FA) resin in modified Chinese fir and poplar wood. 13C CP/MAS NMR, Scanning Electron Microscopy (SEM), Confocal Laser Scanning Microscopy (CLSM), Nanoindentation and Imaging Fourier transform infrared microscopy (Imaging FT-IR) were applied to describe the FA resin distribution in wood from bulk to cell wall scale. The results showed that FA resin were mainly located in the cell cavity of Chinese fir tracheids. For poplar, FA resin was mostly deposited in the cavity of fibers and ray cells, while little was found in the adjacent vessels. Lots of pits of wood cells were covered with FA resin which implied a higher risk of drying after wood furfurlation in practical production. Nanoindentation demonstrated that FA resin could easily infiltrate into the wood cell wall because both reduced modulus and hardness of the modified wood cell walls were significantly improved. This conclusion was further supported by the results of imaging FT-IR.

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