کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1507065 | 993822 | 2006 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: New method to obtain chitosan/apatite materials at room temperature New method to obtain chitosan/apatite materials at room temperature](/preview/png/1507065.png)
Brushite in citric acid/chitosan solutions are utilized to prepare powders or coatings by dip-coating. These materials are alkaline transformed at room temperature into calcium-deficient apatite/chitosan mixtures. Powders containing from 35 to 80% of inorganic filler can be prepared. The thermogravimetric and X-ray analysis of the residues indicates a strong interaction between the chitosan and the ceramic components. Ti6Al4V substrates have been coated yielding adherent layers that range between 1 and 4 microns depending on the repetition of the coating procedure. The formation of apatite onto these materials after immersion in a simulated body fluid (SBF) indicates a potential bioactivity in vivo. The materials have been characterized by viscosimetry, XRD, FTIR, SEM, EDS, SFM and TG/ATD. The adhesion strength was determined by a pull-out test.
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Journal: Solid State Sciences - Volume 8, Issue 5, May 2006, Pages 513–519