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1. Rapid biomimetic mineralization of chitosan sponges with a facile method in ethanol/water mixed solution | |||
Li Lihua ,Zhou Changren | |||
Basic Medicine 18 May 2010 | |||
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Abstract:Mineralization of biopolymers is a hot topic and a promising method for tissue engineering. In this study, biomimetic mineralization of chitosan sponges was performed in a large quantity with a rapid and facile approach. The calcium phosphate apatite was co-precipitated as the precursor for the formation of hydroxyapatite in mixed water-ethanol solution. The component and morphology of the apatite and the nanocomposite hybrid sponges were measured with XRD, TEM, FTIR and ESEM. The mechanism of nucleation and growth of crystals were discussed as well. Results revealed that chitosan matrix improved the crystalline quality of hydroxyapatite (HAP) crystals. With elongation of mineralization time, the mineral layers on the outer surface and inner section of chitosan sponges increased. The chitosan sponge or the microenvironment around it promoted the crystallites quality of HAP phase. Furthermore, the compressive strength and modulus of the HAP-chitosan bio-composites increased to 0.55 MPa and 29.29± 1.25 MPa respectively. Such one-pot approach might be extended to the mineralization of other biopolymers and will have a very broad application in the future. | |||
TO cite this article:Li Lihua ,Zhou Changren . Rapid biomimetic mineralization of chitosan sponges with a facile method in ethanol/water mixed solution[OL].[18 May 2010] http://en.paper.edu.cn/en_releasepaper/content/4372783 |
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