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Preparation and Characterization of PLLA/CaSiO3/Apatite Composite Films

Authors

  • Huixian Yu,

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China
    2. Graduate School of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, People's Republic of China
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  • Congqin Ning,

    Corresponding author
    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China
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  • Kaili Lin,

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China
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  • Lei Chen

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China
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  • This work was financially supported by the Shanghai Pujiang Program (Grant No. 07pj14092) and the National Natural Science Foundation of China (Grant No. 50732002).

*cqning@mail.sic.ac.cn

Abstract

CaSiO3/apatite composites prepared by a biomimetic method were used to fabricate Poly-l-lactic acid (PLLA)/CaSiO3/apatite composite films via a solvent evaporation technique. The in vitro bioactivity and mechanical properties of the films were investigated. The results suggested that the composition and particle size of the CaSiO3/apatite composites were dominated by the powder/solution ratio used during the immersion. The ability of the films to form apatite in vitro was dependent on the β-CaSiO3 content. The introduction of inorganic components into the PLLA matrix resulted in a significant drop in tensile strength, while better dispersion and more apatite content enhanced the tensile strength.

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