In this work, a novel waterborne hyperbranched polyacrylate (HBPA) dispersed organo-montmorillonite (OMMT) emulsion was synthesized and used for the treatment of wood in a vacuum environment in order to enhance the physical and mechanical properties of the wood. The sapwood of Cathay poplar ( Populus cathayana Rehd.) and Radiata pine ( Pinus radiata D.Don) were used as the samples for experimentation. The results showed that the physical and mechanical properties of the wood improved significantly due to the successful penetration of the OMMT and HBPA into the wood cell wall. From it was also observed that OMET completely exfoliated from the HBPA matrix and formed a hydrophobic film covering on the inside walls of the cell lumen. Further, it was observed that the poplar sample displayed better mechanical properties than the pine sample because the pine has a more compact structure when compared to poplar and contains rosin. Furthermore, it was also observed that the mechanical properties of the modified wood sample gradually improved with an increase in the concentration of the emulsion. However, excessive concentration (>4 wt%) did not lead to further improvement.

中文翻译：

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使用新型有机蒙脱土/超支化聚丙烯酸酯乳液增强木材的物理和机械性能

在这项工作中，合成了一种新型水性超支化聚丙烯酸酯 (HBPA) 分散的有机蒙脱石 (OMMT) 乳液，并将其用于真空环境中的木材处理，以提高木材的物理和机械性能。以国泰杨（Populus cathayana Rehd.）和辐射松（Pinus radiata D.Don）的边材作为试验样品。结果表明，由于 OMMT 和 HBPA 成功渗透到木材细胞壁中，木材的物理和机械性能显着提高。从中还观察到，OMET 完全从 HBPA 基质上剥落，并在细胞腔的内壁上形成了一层疏水膜。更多，据观察，杨树样品比松树样品显示出更好的机械性能，因为与杨树相比，松树具有更紧密的结构，并且含有松香。此外，还观察到改性木材样品的机械性能随着乳液浓度的增加而逐渐改善。然而，过高的浓度（> 4 wt%）并没有导致进一步的改善。