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

Controllable synthesis of high aspect ratio Mg2B2O5 nanowires and their applications in reinforced polyhydroxyalkanoate composites

莫兆军, 陈金鹏, 林靖, 范英, 梁春永, 王洪水, 徐学文, 胡龙, 唐成春   

  1. School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China
  • 收稿日期:2013-10-07 修回日期:2013-12-10 出版日期:2014-05-15 发布日期:2014-05-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10974041), the Research Fund for the Dectoral Program of Higher Education, China (Grant No. 20091317110005), the Key Projects of Chinese Ministry of Education (Grant No. 209011), and the Natural Science Foundation of Hebei Province, China (Grant No. 2010000084).

Controllable synthesis of high aspect ratio Mg2B2O5 nanowires and their applications in reinforced polyhydroxyalkanoate composites

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)   

  1. School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China
  • Received:2013-10-07 Revised:2013-12-10 Online:2014-05-15 Published:2014-05-15
  • Contact: Lin Jing, Tang Cheng-Chun E-mail:Dr.linjing@gmail.com;tangcc@hebut.edu.cn
  • About author:62.23.St; 81.10.Jt; 43.38.Tj
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10974041), the Research Fund for the Dectoral Program of Higher Education, China (Grant No. 20091317110005), the Key Projects of Chinese Ministry of Education (Grant No. 209011), and the Natural Science Foundation of Hebei Province, China (Grant No. 2010000084).

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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.

关键词: nanostructure, recrystallization, reinforcement

Abstract: 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.

Key words: nanostructure, recrystallization, reinforcement

中图分类号:  (Complex nanostructures, including patterned or assembled structures)

  • 62.23.St
81.10.Jt (Growth from solid phases (including multiphase diffusion and recrystallization)) 43.38.Tj (Public address systems, sound-reinforcement systems)