11. Adhesive Strength of the Apatite Layer Formed on T1O2 Nanoparticles/High Density Polyethylene Composites

  1. Mineo Mizuno
  1. Masami Hashimoto1,
  2. Hiroaki Takadama1,
  3. Mineo Mizuno1 and
  4. Tadashi Kokubo2

Published Online: 27 MAR 2008

DOI: 10.1002/9780470291269.ch11

Advances in Bioceramics and Biocomposites: Ceramic Engineering and Science Proceedings, Volume 26, Number 6

Advances in Bioceramics and Biocomposites: Ceramic Engineering and Science Proceedings, Volume 26, Number 6

How to Cite

Hashimoto, M., Takadama, H., Mizuno, M. and Kokubo, T. (2005) Adhesive Strength of the Apatite Layer Formed on T1O2 Nanoparticles/High Density Polyethylene Composites, in Advances in Bioceramics and Biocomposites: Ceramic Engineering and Science Proceedings, Volume 26, Number 6 (ed M. Mizuno), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291269.ch11

Author Information

  1. 1

    Japan Fine Ceramics Center 2–4–1 Mutsuno, Atsuta-ku, Nagoya, 456–8587, Japan

  2. 2

    Research Institute for Science and Technology, Chubu University 1200 Matsumoto-cho, Kasugai, 487–8501, Japan

Publication History

  1. Published Online: 27 MAR 2008
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9781574982367

Online ISBN: 9780470291269

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Keywords:

  • titanium;
  • nanopowder;
  • plasma;
  • photographs;
  • bioactive

Summary

The adhesive strength was studied between bone-like apatite layer and composites consisted of high density polyethylene (HDPE) and TiO2 (hereafter TiO2/HDPE). Apatite formed on the TiO2/HDPE composite after 3 days soaking in a simulated body fluid (SBF), when the composite was first subjected to polishing with 10% HNO3 or HC1, and then to soaking in the SBF. The adhesive strength was measured using a modified ASTM C-333 standard, in which a tensile stress was applied to the substrate. Measured strength of the apatite layer was compared with HAPEX® which is commercially available hydroxyapatite-polyethylene composite. The TiO2/HDPE composites demonstrated to have much greater as three times adhesive strength (maximum 4.5±0.5 MPa) as compared with HAPEX® (1.4±0.5 MPa), when filler contents of TiO2/HDPE and HAPEX® were 50 and 40 vol%, respectively. Because the matrix material in both TiO2/HDPE and HAPEX® is the same, the adhesive strength is attributed to the increase in the number of the apatite nuclei on the TiO2 nanoparticles. The higher adhesive strength of the apatite layer formed on the TiO2/HDPE composite suggests that this composite might also be utilized in applications involving higher levels of load bearing such as vertebra.