中文摘要：

受生物体磁场感应特征的启发而被开发利用的趋磁性木材是一种新型的功能性材料,当前对它的研究仍在起步阶段。文中系统地探讨了水热工艺参数,如反应的温度、时间和反应物的浓度对趋磁性木材结构和性能的影响,并通过扫描电子显微镜（SEM）、X射线衍射（XRD）仪和磁学测量系统对趋磁性木材的表面形貌、晶体类型和磁性能进行了分析。结果发现,高的反应温度有利于在木材表面生成粒径更大的磁性粒子,从而得到具有更高饱和磁化强度的磁性木材。反应时间对趋磁性木材形成初期的形貌和磁性有重要影响,但当反应时间达到8 h时,木材上磁性粒子数量达到饱和状态。反应物浓度对生长在木材表面磁性粒子的纯度具有很重要的影响,合适的反应物浓度能够确保得到高纯度的磁性粒子。此外,在优化工艺的基础上对趋磁性木材进行疏水改性,可以得到同时具有抗紫外老化性能、超疏水性和磁性的多功能性木材,拓展了趋磁性木材的应用领域。

英文摘要：

Inspired by the magnetic induction characteristic of biologies, the magnetotactic wood was prepared as a new kind of functional material while this application is still in its infancy.This study focused on understanding the influence of hydrothermal technique, such as temperature, time and reactant concentration, on the structures and properties of the magnetotactic wood.The surface morphology, crustal type and magnetic properties of magnetotactic wood were characterized by scanning electron microscope （SEM）, X-ray diffraction （XRD） and magnetic property measurement system.The results showed that the high reaction temperature was beneficial to the formation of larger size magnetic nanoparticles on the wood surface, and the magnetotactic wood with higher saturation magnetization was obtained.The hydrothermal time had an significant influence on the morphology and magnetism of the initial formation of the magnetotactic wood.However, the number of magnetic nanoparticles that deposited on the wood surface reached saturation when the reaction time was 8 h.The concentration of the reactants had an important influence on the purity of the magnetic particles that grown on the wood surface.The magnetic particles with high purity can be obtained under the appropriate concentration of reactants.In addition, on the basis of optimization hydrothermal processing, the multifunctional wood materials with magnetic, superhydrophobic and anti-ultraviolet properties was prepared through the hydrophobic modification of magnetotactic wood which would greatly expand the application of magnetotactic wood.