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Preparation and characterization of nano-hydroxyapatite/polyvinyl alcohol gel composites

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Abstract

Nano-hydroxyapatite reinforced poly(vinyl alcohol) gel (nano-HA/PVA gel) composites has been proposed as a promising biomaterial, especially used as an articular cartilage repair biomaterial. In this paper, nano-HA/PVA gel composite was prepared by in situ synthesis method and incorporation with freeze-thaw cycle process. The microstructure and morphology were investigated by X-ray diffraction, TEM, SEM and FTIR. The results showed that the size of HA particles synthesized in PVA solution was on the nanometer scale. Both the size and crystallinity of HA particles synthesized in PVA solution decreased compared with that of HA synthesized in distilled water. The nano-HA particles were distributed in PVA matrix uniformly due to the effect of PVA solution as a dispersant while low content of HA particles in the composites. On the contrary, with high content of nano-HA particles in the composites, the particles tended to aggregate. The result of FT-IR analysis indicated that the chemical bond between nano-HA particles and PVA matrix existed. The conformation and degree of tacticity of PVA molecule changed because of the addition of HA particles. Furthermore, the interfacial strength of the composites was improved due to the interaction between nano-HA particle and PVA matrix and this was beneficial to improving the mechanical properties of the composites.

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Authors and Affiliations

  1. Department of Material Science & Engineering, Anhui University of Science and Technology, Huainan, 232001, China

    Yusong Pan  (潘育松)

  2. Department of Material Science & Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China

    Dangsheng Xiong

Authors
  1. Yusong Pan  (潘育松)
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  2. Dangsheng Xiong
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Correspondence to Yusong Pan  (潘育松).

Additional information

Funded by the Natural Science Research of Key Projects of Anhui Provincial Universities (No. KJ2010A099).

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Pan, Y., Xiong, D. Preparation and characterization of nano-hydroxyapatite/polyvinyl alcohol gel composites. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 25, 474–478 (2010). https://doi.org/10.1007/s11595-010-0026-y

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  • DOI: https://doi.org/10.1007/s11595-010-0026-y

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