CAJ | 학술논문

以碱木质素通过曼尼希反应合成木质素胺，将其作为界面改性剂用于PVC/木粉复合材料，对复合材料的力学性能、吸水性、流变性能、动态力学性能及形貌学特征等进行研究，对其界面改性机理进行探讨。与未处理木粉制备的复合材料相比，以木质素胺处理过的木粉（质量分数2%，氮元素含量8.18%）制备的复合材料，拉伸和冲击强度分别提高了21.0%和43.9%；木质素胺中氨基含量对复合材料力学性能的影响不明显。以木质素胺处理过的复合材料，吸水率有所降低，储能模量升高，加工热稳定性略有降低，但整体影响不大。SEM分析表明，木质素胺的引入，提高了PVC基体与木粉间的界面结合。
이감목질소통과만니희반응합성목질소알，장기작위계면개성제용우PVC/목분복합재료，대복합재료적역학성능、흡수성、류변성능、동태역학성능급형모학특정등진행연구，대기계면개성궤리진행탐토。여미처리목분제비적복합재료상비，이목질소알처리과적목분（질량분수2%，담원소함량8.18%）제비적복합재료，랍신화충격강도분별제고료21.0%화43.9%；목질소알중안기함량대복합재료역학성능적영향불명현。이목질소알처리과적복합재료，흡수솔유소강저，저능모량승고，가공열은정성략유강저，단정체영향불대。SEM분석표명，목질소알적인입，제고료PVC기체여목분간적계면결합。
Lignin amine was synthesized from soda lignin via Mannich reaction and was used in interfacial modiifcation for poly (vinyl chloride) (PVC)/wood composites. The PVC/wood composite was prepared from surface treated wood lfour and polyvinyl chloride by melt compounding. The tensile and impact strengths of composites prepared from 30phr of wood flour treated with 2wt% lignin amine were increased by 21.0%and 43.9%, respectively than those prepared from untreated wood lfour. The effect of nitrogen element content in lignin amine on the mechanical performance of composites is no obvious. Furthermore, lignin amine treatment could also significantly reduce the water absorption of composites. A signiifcant increase in storage modulus (E’) was observed upon incorporation of wood flour with lignin amine treatment. The improved dispersion of wood flour in polymer matrix was observed by SEM images when the wood lfour was treated by lignin amine. The experimental data indicate that the polymer-wood interfacial combination is strengthened. However, the processing thermal stability of composites slightly lowered after lignin amine treatment.