中国物理B ›› 2014, Vol. 23 ›› Issue (5): 56201-056201.doi: 10.1088/1674-1056/23/5/056201
• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇 下一篇
莫兆军, 陈金鹏, 林靖, 范英, 梁春永, 王洪水, 徐学文, 胡龙, 唐成春
Mo Zhao-Jun (莫兆军), Chen Jin-Peng (陈金鹏), Lin Jing (林靖), Fan Ying (范英), Liang Chun-Yong (梁春永), Wang Hong-Shui (王洪水), Xu Xue-Wen (徐学文), Hu Long (胡龙), Tang Cheng-Chun (唐成春)
摘要: Highly pure magnesium borate (Mg2B2O5) nanowires with an average diameter of ~ 30 nm, an average length of ~ 15 μm, and a high aspect ratio of ~ 500 have been synthesized on a large scale via a two-step method. MgBO2(OH) nanowires with high aspect ratios were first prepared via a PVP-assisted hydrothermal technique. Using these nanowires as precursors, single crystalline Mg2B2O5 nanowires were synthesized by post-annealing treatment at a relatively low temperature of 700 ℃. The important effect of the MgBO2(OH)-Mg2B2O5 conversion process on the morphology of the Mg2B2O5 nanowires was investigated and it was indicated that the recrystallization process plays an important role in the protection of the one-dimensional (1D) nanostructure. Moreover, the rigidity and the toughness of the Mg2B2O5 nanowire-reinforced PHA composites were tremendously improved compared to those of the pure PHA. Our results demonstrate the effectiveness of Mg2B2O5 nanowires for reinforcement applications in polymer composites.
中图分类号: (Complex nanostructures, including patterned or assembled structures)