文献类型：期刊文献

英文题名：Manufacturing and Characterization of Modified Wood with In Situ Polymerization and Cross-Linking of Water-Soluble Monomers on Wood Cell Walls

作者：Hu, Jihang[1] Fu, Zongying[1] Wang, Xiaoqing[1] Chai, Yubo[1]

第一作者：胡极航

通信作者：Hu, JH[1];Chai, YB[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2022

卷号：14

期号：16

外文期刊名：POLYMERS

收录：;EI(收录号：20223712728215);Scopus(收录号：2-s2.0-85137608491);WOS:【SCI-EXPANDED(收录号:WOS:000846548200001)】；

基金：This research was funded by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2020ZC003).

语种：英文

外文关键词：poplar; cell walls; cross-linking modification; wood properties

摘要：Fast-growing plantation wood has poor dimensional stability and easily cracks, which limits its application. As wood modification can improve the dimensional stability, strength, and other properties of wood, it has been extensively used. In this study, 2-Hydroxyethyl methacrylate (HEMA) and glyoxal were applied to treat poplar wood (Populus euramevicana cv.I-214) by using vacuum pressure impregnation to improve its dimensional stability. The weight percentage gain (WPG), anti-swelling efficiency (ASE), water absorption rate (WAR), leachability (L), and other properties of modified wood were examined. Results showed that the modifier was diffused into the cell walls and intercellular space and reacted with the wood cell wall after heating to form a stable reticular structure polymer which effectively decreased the hydroxyl content in the wood and blocked the water movement channel; thus, further improving the physical performance of wood. These results were confirmed by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and nuclear magnetic resonance (NMR). When the ratio of the modifier was 80:20, the concentration of the modifier was 40%, and the curing temperature was 120 degrees C, the modified poplar had the best performance, which showed a low WAR (at its lowest 58.39%), a low L (at its lowest 10.44%), and a high ASE (of up to 77.94%).