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Reinforcement of Calcium Phosphate Cement by Bio-Mineralized Carbon Nanotube

Authors

  • Xiupeng Wang,

    1. Key Laboratory of Specially Functional Materials (South China University of Technology), Ministry of Education, Guangzhou 510641, China
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    • *School of Materials Science and Engineering, South China University of Technology, Guangzhou, China.

  • Jiandong Ye,

    Corresponding author
    1. Key Laboratory of Specially Functional Materials (South China University of Technology), Ministry of Education, Guangzhou 510641, China
      †Author to whom correspondence should be addressed. e-mail: jdye@scut.edu.cn
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    • *School of Materials Science and Engineering, South China University of Technology, Guangzhou, China.

  • Yingjun Wang,

    1. Key Laboratory of Specially Functional Materials (South China University of Technology), Ministry of Education, Guangzhou 510641, China
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    • *School of Materials Science and Engineering, South China University of Technology, Guangzhou, China.

  • Ling Chen

    1. School of Light Industry and Food Science, South China University of Technology, Guangzhou 510641, China
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  • R. Ballarini—contributing editor

  • This work was financially supported by the National Natural Science Foundation of China under Grant 50172015 and the Science and Technology Program of Guangzhou City of China under Grant 200523-D2041.

†Author to whom correspondence should be addressed. e-mail: jdye@scut.edu.cn

Abstract

Bio-mineralized carbon natotubes (CNTs) were prepared by soaking carboxyl functionalized CNTs in a simulating body fluid (SBF). A uniform hydroxyapatite layer was precipitated on the outer walls of CNTs after 7 days of soaking. The results showed that, by addition of the as-received CNTs and bio-mineralized CNTs, the compressive strength of the calcium phosphate cement (CPC) increased by 24% and 120%, respectively. The modified interfacial bonding between the bio-mineralized CNTs and CPC accounted for the significant improvement in the mechanical property by addition of the bio-mineralized CNTs as compared with the as-received CNTs.

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