功能单体设计合成及其对木材性能的改善

In order to solve the problem of poor mechanical properties of wood due to its natural porous structure, In this study, a novel functional monomer (GMAPEGDMA) is designed and synthesized using glycidyl methacrylate (GMA) and polyethylene glycol-400 (PEG-400), which is combined with GMA to achieve in-situ polymerization modification on pore structure of wood cell cavity. The results shows that the functional monomer system can fill the wood pore by in-situ polymerization, and chemically bond with the wood component, so that polymer can combine well with the wood interface. The bending strength, compression strength, impact toughness of the obtained wood-polymer composites is significantly increased by 0.99、1.06、1.47 over untreated wood, respectively. This design method is suitable for the improvement of mechanical performance of all tree species and provides the possibility for large-scale application.