کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1663339 | 1008465 | 2006 | 7 صفحه PDF | دانلود رایگان |
Nonwoven cellulose (regenerated, oxidized) fabrics were coated with hydroxy carbonated apatite (HCA) using a procedure based on a biomimetic method. Simulated body fluid (SBF) with a high degree of supersaturation (5xSBF) was applied to accelerate the biomimetic formation of bonelike apatite on the cellulose fabrics. After creating calcium phosphate nuclei on the cellulose fibers in a first 5xSBF with high Mg2+ and HCO3− concentrations, the cellulose fabrics were additionally soaked in a second 5xSBF which was optimized with respect to accelerated crystal growth by reduced Mg2+ and HCO3− concentrations. The hydroxy carbonated apatite (HCA) layer thickness increased from 6 μm after 4 h of soaking in the latter solution to 20 μm after 48 h. The amount of CO32− substituting PO43− in the hydroxyapatite (HA) lattice of the precipitates can be varied by changing the soaking time.
Journal: Surface and Coatings Technology - Volume 201, Issue 6, 4 December 2006, Pages 2392–2398