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The furfuryl alcohol (FA) resin distribution in the furfurylated bamboo
Holzforschung ( IF 2.4 ) Pub Date : 2021-02-23 , DOI: 10.1515/hf-2020-0007
Wanju Li 1, 2 , Minghui Liu 2 , Hankun Wang 2 , Hongbo Zhai 3 , Yan Yu 2, 4
Affiliation  

Abstract It is well known the properties of resin impregnation wood is significantly influenced by the specific distribution pattern of resin in the modified wood. In this work, bamboo was furfurylated with an improved process. In addition to testing and evaluating its main physical, mechanical and durable properties, it was explored how the furfuryl alcohol (FA) resin is distributed in the furfurylated bamboo. To achieve this goal, scanning electron microscopy (SEM), confocal laser scanning microscopy (CLSM), nanoindentation, and imaging Fourier transform infrared microscopy (imaging FT-IR) were applied. SEM images demonstrates FA resin is mainly located in the parenchymal cell cavity of bamboo, however the existence of FA resin in the small cavities of the bamboo fibers is also observed by CLSM. In addition, the result of nanoindentation and imaging FT-IR both indicates that FA can penetrate and polymerize within the cell wall of the bamboo fiber. It is then concluded the heterogeneous but multi-scale distribution of FA resin should be responsible for the significant improvement of furfurylated bamboo in both dimensional stability and biological durability.

中文翻译:

糠醇(FA)树脂在糠化竹中的分布

摘要 众所周知,树脂浸渍木材的性能受树脂在改性木材中的特定分布模式的显着影响。在这项工作中,竹子通过改进的工艺进行了糠醛化。除了测试和评估其主要的物理、机械和耐用性能外,还探索了糠醇 (FA) 树脂在糠酸竹子中的分布情况。为了实现这一目标,应用了扫描电子显微镜 (SEM)、共聚焦激光扫描显微镜 (CLSM)、纳米压痕和成像傅里叶变换红外显微镜(成像 FT-IR)。SEM 图像表明 FA 树脂主要位于竹的薄壁细胞腔中,但 CLSM 也观察到 FA 树脂存在于竹纤维的小腔中。此外,纳米压痕和 FT-IR 成像结果均表明 FA 可以在竹纤维的细胞壁内渗透和聚合。然后得出结论,FA 树脂的异质但多尺度分布应该是导致糠化竹在尺寸稳定性和生物耐久性方面的显着改善的原因。
更新日期:2021-02-23
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