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Chin. Phys. B, 2014, Vol. 23(5): 056201    DOI: 10.1088/1674-1056/23/5/056201
CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES Prev   Next  

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)
School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China
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.
Keywords:  nanostructure      recrystallization      reinforcement  
Received:  07 October 2013      Revised:  10 December 2013      Accepted manuscript online: 
PACS:  62.23.St (Complex nanostructures, including patterned or assembled structures)  
  81.10.Jt (Growth from solid phases (including multiphase diffusion and recrystallization))  
  43.38.Tj (Public address systems, sound-reinforcement systems)  
Fund: 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).
Corresponding Authors:  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

Cite this article: 

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) Controllable synthesis of high aspect ratio Mg2B2O5 nanowires and their applications in reinforced polyhydroxyalkanoate composites 2014 Chin. Phys. B 23 056201

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