This study presents an analysis of the structure and properties of different types of lignocellulosic fillers modified by isophorone diisocyanate (IPDI) to provide insights into the possibility of their application to the manufacturing of wood polymer composites (WPCs). Moreover, it deals with the environmental aspects of modified fillers, by assessment of volatile organic compounds (VOCs) emitted during modification, as well as from final products. Three types of commercially available lignocellulosic fillers were modified with different content of IPDI (from 1 to 15 wt%) using the internal mixer. The main compounds detected in the air during modifications were terpenes and terpenoids. No IPDI was detected, which is very beneficial considering its toxicity. On the other hand, IPDI was emitted from modified fillers at a slightly elevated temperature of 40 °C, which was associated with a significant rise in its vapor pressure. Successful modification of fillers was confirmed by FTIR spectroscopy and thermogravimetric analysis. Performed modifications of lignocellulosic fillers with IPDI had a relatively small impact on their particle size and color properties. Such an effect can be considered beneficial for the mechanical performance and appearance of WPCs, which could be potentially manufactured using IPDI-modified lignocellulosic fillers.

这项研究对经异佛尔酮二异氰酸酯（IPDI）改性的不同类型木质纤维素填料的结构和性能进行了分析，以深入了解其在木材聚合物复合材料（WPC）制造中的应用可能性。此外，它还通过评估改性过程中以及最终产品中释放的挥发性有机化合物（VOC）来处理改性填料的环境问题。使用内部混合器，对三种类型的市售木质纤维素填料进行了不同的IPDI含量（1至15 wt％）改性。修饰过程中在空气中检测到的主要化合物是萜烯和萜类化合物。未检测到IPDI，考虑到其毒性，这是非常有益的。另一方面，IPDI是在40°C稍高的温度下从改性填料中释放出来的，这与其蒸气压的显着升高有关。FTIR光谱和热重分析证实了填料的成功改性。用IPDI进行木质纤维素填料的改性对它们的粒径和颜色特性影响相对较小。可以认为这种效果对于WPC的机械性能和外观是有益的，可以使用IPDI改性的木质纤维素填料来制造WPC。用IPDI进行木质纤维素填料的改性对它们的粒径和颜色特性影响相对较小。可以认为这种效果对于WPC的机械性能和外观是有益的，可以使用IPDI改性的木质纤维素填料来制造WPC。用IPDI进行木质纤维素填料的改性对它们的粒径和颜色特性影响相对较小。可以认为这种效果对于WPC的机械性能和外观是有益的，可以使用IPDI改性的木质纤维素填料来制造WPC。