Hydrothermal synthesis of magnetic wood composites and improved wood properties by precipitation with CoFe2O4/hydroxyapatite

作者：Gan, Wentao; Gao, Likun; Zhan, Xianxu; Li, Jian^*

来源：RSC Advances, 2015, 5(57): 45919-45927.

DOI：10.1039/c5ra06138e

• SOL-GEL PROCESS
• INORGANIC COMPOSITES
• NANOPARTICLES
• HYDROXYAPATITE
• SURFACE
• FABRICATION
• CONSTRUCTION
• PARTICLES
• STABILITY
• NETWORK

Magnetic wood would have potential uses in electromagnetic shielding, indoor electromagnetic wave absorption and heavy metal adsorption. In this study, magnetic wood composites with improved thermal stability and mechanical properties as well as UV resistance were prepared by modification with magnetic CoFe2O4 and hydroxyapatite (HAP) via a hydrothermal process. The functional groups and morphology of the modified wood were examined by Fourier transform infrared spectroscopy (FTIR), Xray diffraction (XRD) and scanning electron microscopy (SEM) with energy-dispersive X-ray analysis (EDXA). The results indicated that the magnetic CoFe2O4 nanoparticles precipitated on the wood substrate during the alkali treatment, and then the hydroxyapatite was grown on the wood surface via the electrostatic interactions between the calcium cations and the negatively charged OH anions. Moreover, the magnetic, thermal and mechanical performances and the UV-resistance of the CoFe2O4/HAP-modified wood composites were also evaluated.

• 出版日期2015
• 单位东北林业大学