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- W3139804943 abstract "The freeze-extraction and freeze-gelation methods were used to prepare highly porous β-TCP/CS scaffolds with different β-TCP/CS ratio.In these methods,the suspending mixture of β-TCP and chitosan was frozen,the frozen mixture was immersed in a non-solvent(0.05mol/L NaOH/ehanol aqueous) bath to allow the exchange between solvent(acetic-acid aqueous) and non-solvent at a temperature lower than the freezing point of the acetic-acid.Then,the β-TCP/CS scaffolds were formed and dried at room temperature.Scanning electron microscopy (SEM),X-ray diffraction (XRD),gas chromatography (GC) and omnipotence material testing machine were employed to characterize the β-TCP/CS scaffolds.The results of GC show that the freeze extraction of the β-TCP/chitosan scaffolds was completed when the extraction time is above 24 h.The SEM results show that the β-TCP/CS scaffolds are composed of interconnected pore network.The porosity of the β-TCP/CS scaffolds decrease with the increase of the content of the β-TCP.The β-TCP/CS scaffolds have a highest compressive strength when the chitosan/β-TCP ratio is 30:70.The present work displays that the β-TCP/CS composite scaffolds with appropriate mechanical properties and high porosity can be successfully prepared by the freeze-extraction and freeze-gelation methods." @default.
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- W3139804943 date "2011-01-01" @default.
- W3139804943 modified "2023-09-23" @default.
- W3139804943 title "Preparation and Characterization of β-TCP/CS Scaffolds by Freeze-extraction and Freeze-gelation" @default.
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