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Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications
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Spherical N-carboxyethylchitosan/hydroxyapatite nanoparticles prepared by ionic diffusion process in a controlled

Aiping Zhu1, Yan Lu, Yao Zhou

  • 1College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, People's Republic of China. apzhu@yzu.edu.cn

Journal of Materials Science. Materials in Medicine
|October 5, 2010
PubMed
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Researchers developed N-carboxyethylchitosan/hydroxyapatite (NCECS/HA) nanoparticles for biomedical uses. These novel nanocomposites show potential for controlled drug delivery and tissue engineering applications.

Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Materials Chemistry

Background:

  • Hydroxyapatite (HA) and biomacromolecules are crucial for implants, tissue scaffolds, and drug delivery.
  • Nanocomposites offer advanced properties for biomedical applications.

Purpose of the Study:

  • To prepare and characterize N-carboxyethylchitosan/hydroxyapatite (NCECS/HA) nanocomposites.
  • To investigate the influence of synthesis parameters on NCECS/HA properties.
  • To explore the potential applications of NCECS/HA nanocomposites.

Main Methods:

  • Ionic diffusion process for controlled synthesis of NCECS/HA nanoparticles.
  • Fourier transform-infrared spectroscopy (FTIR) for chemical bond analysis.
  • X-ray diffraction (XRD) for crystallization studies.

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  • Transmission electron microscopy (TEM) for morphology and size analysis.

    • Main Results:

    • NCECS/HA nanocomposite properties depend on the mole ratio of NCECS to Ca(2+).
    • FTIR confirmed chemical bonding between NCECS and HA.
    • XRD indicated retarded HA crystallization within the NCECS matrix.
    • TEM revealed spherical NCECS/HA nanocomposites with diameters of 10-40 nm.
    • Mineralization is driven by NCECS and HA self-assembly.

    Conclusions:

    • NCECS/HA nanocomposites were successfully synthesized with controlled morphology.
    • The self-assembly of NCECS and HA drives mineralization.
    • These nanocomposites show promise as carriers for controlled delivery of drugs and growth factors.