Abstract
Hydroxyapatite nanospheres (nHA) were first synthesized from (NH 4) 2HPO 4 and CaCl 2 precursors in the presence of poly(vinyl alcohol) templates. The structure and morphology of as-synthesized products were examined by materials characterization techniques. X-ray diffraction patterns and Fourier transform infrared spectra showed that the nHA (50-70 nm) exhibit the crystalline structure and vibration bands of HA. The Ca/P molar ratio of nHA approached the stoichiometric value of 1.67. The nHA were then melt blended with polyamide-6 (PA6), followed by injection molding. Tensile and flexural measurements showed that the tensile and bending strengths of injection molded PA6-10 wt% nHA composite were close to those of human cortical bone. A simulated body fluid immersion test revealed that apatite crystals can be readily deposited on the PA6-10 wt% nHA composite surface after immersion for 30 days. © 2011 Copyright Taylor and Francis Group, LLC.
| Original language | English |
|---|---|
| Pages (from-to) | 2442-2453 |
| Journal | Journal of Macromolecular Science, Part B: Physics |
| Volume | 50 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 1 Dec 2011 |
Research Keywords
- apatite crystals
- hydroxyapatite nanospheres
- mechanical properties
- poly(vinyl alcohol)
- polyamide
- polymer template
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