| Title: |
Comparison of Ca/P mineralization on the surfaces of poly (ε-caprolactone) composites filled with silane-modified nano-apatite. |
| Authors: |
Chi Deng1,2 dc003cn@163.com, Nin Yao2, Xiong Lu2, Shuxin Qu2, Bo Feng2, Jie Weng2, Xiaobing Yang2 |
| Source: |
Journal of Materials Science. Aug2009, Vol. 44 Issue 16, p4394-4398. 5p. 1 Diagram, 3 Graphs. |
| Subject Terms: |
*CALCIUM, *SILANE, *APATITE, *BIOMEDICAL materials, *PHOSPHATE minerals |
| Abstract: |
This study aims to comparatively investigate the Ca/P mineralization on the surfaces of poly (ε-caprolactone) (PCL) composites with apatite nano-fillers, which were modified with silane coupling agents. Three kinds of silane coupling agents like 3-Methylacryoxypropyltrimethoxy silane (KH560), γ-Methacryloxypropyltrimethoxy silane (KH570), and N-(β-aminoethyl)-γ-aminopropyltrimethoxy silane (KH792) were firstly employed to modify the surfaces of nano-apatite particles, and then silane-modified nano-apatite/PCL composites were prepared by combining solvent dispersion and melting co-blending with hot-pressing methods. The Ca/P mineralization of the modified PCL-Matrix composites was evaluated by soaking in 2-time simulated body fluid (2SBF) at 36.5 °C and pH 7.40 after 21 days. These results showed that the Ca/P mineralization on the surface of the silane-modified composite was same as not modified composite. Apatite obtained on the surface of the modified composite film was of lower crystallinity, 1.62 Ca/P ratio and carbonate ceramic, similar to inorganic composition of bone in biological body, and not notably different from one of not modified PCL composite. This discussion revealed that as-fabricated silane-modified composite could achieve Ca/P mineralization and exhibited the ability of obtaining like-bone apatite on own surface like other bioactive materials. [ABSTRACT FROM AUTHOR] |
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| Database: |
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