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Improvement of the Performance of Plantation Wood by Grafting Water-Soluble Vinyl Monomers onto Cell Walls
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-10-16 00:00:00 , DOI: 10.1021/acssuschemeng.8b03112 Hongbo Qiu 1, 2 , Sheng Yang 3 , Yanming Han 2 , Xiaoshuang Shen 2 , Dongbin Fan 2 , Gaiyun Li 1, 3 , Fuxiang Chu 3
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-10-16 00:00:00 , DOI: 10.1021/acssuschemeng.8b03112 Hongbo Qiu 1, 2 , Sheng Yang 3 , Yanming Han 2 , Xiaoshuang Shen 2 , Dongbin Fan 2 , Gaiyun Li 1, 3 , Fuxiang Chu 3
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The accomplishment of lightweight reinforcement of wood through an environmentally friendly approach has been seen as a tough nut to crack for a long time. In this study, a novel method inserting water-soluble vinyl monomers into wood cell walls followed by in situ polymerization was proposed. The distributions of the modifiers in the wood cell walls and the graft mechanism between water-soluble vinyl monomers and wood cell wall components were thoroughly investigated. Results indicated that the water-soluble vinyl monomers could effectively permeate into the wood cell walls and connected with the hydroxyl groups of the lignin and polysaccharides via covalent bonds. The lumen of the wood remained unfilled during the modification process, and just a 40% weight gain was achieved. However, a 68.37% antiswelling efficiency was achieved after a water-soluble vinyl monomer treatment under the optimized condition (when 20 wt % of NMA was coadded). The modulus of rupture and modulus of elasticity of the corresponding material increased 20.2% and 38.0%, respectively, compared with those of the untreated one.
中文翻译：
通过将水溶性乙烯基单体接枝到细胞壁上来改善人工林的性能
通过环保的方法完成木材的轻质增强，长期以来一直被认为是难以破解的螺母。在这项研究中，提出了一种新的方法，将水溶性乙烯基单体插入木细胞壁，然后进行原位聚合。深入研究了改性剂在木质细胞壁中的分布以及水溶性乙烯基单体与木质细胞壁组分之间的接枝机理。结果表明，水溶性乙烯基单体可以有效地渗透到木质细胞壁中，并通过共价键与木质素和多糖的羟基连接。木材的内腔在改性过程中保持未填充状态，并且仅增加了40％的重量。但是，一个68。在最佳条件下（当共加入20 wt％的NMA时）进行水溶性乙烯基单体处理后，可获得37％的抗溶胀效率。与未处理的材料相比，相应材料的断裂模量和弹性模量分别增加了20.2％和38.0％。
更新日期：2018-10-16
中文翻译：
通过将水溶性乙烯基单体接枝到细胞壁上来改善人工林的性能
通过环保的方法完成木材的轻质增强，长期以来一直被认为是难以破解的螺母。在这项研究中，提出了一种新的方法，将水溶性乙烯基单体插入木细胞壁，然后进行原位聚合。深入研究了改性剂在木质细胞壁中的分布以及水溶性乙烯基单体与木质细胞壁组分之间的接枝机理。结果表明，水溶性乙烯基单体可以有效地渗透到木质细胞壁中，并通过共价键与木质素和多糖的羟基连接。木材的内腔在改性过程中保持未填充状态，并且仅增加了40％的重量。但是，一个68。在最佳条件下（当共加入20 wt％的NMA时）进行水溶性乙烯基单体处理后，可获得37％的抗溶胀效率。与未处理的材料相比，相应材料的断裂模量和弹性模量分别增加了20.2％和38.0％。
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