羟基磷灰石/细菌纤维素纳米复合材料的制备与热力学性能表征
Nanotechnology and Precision Engineering（2009）
Abstract
通过仿生途径制备了模拟天然骨成分的羟基磷灰石/细菌纤维素(hydroxyapatite/bacterial cellulose,HAp/BC)纳米复合材料,使用TGA(thermo-gravimetric analysis)、DSC(differential scanning calorimetry)和DMA(dynamic mechanical analysis)测试方法对复合材料进行了热力学表征,以此来了解复合材料的成分组成、热稳定性和热力学行为.实验结果表明,纳米复合材料的成分与天然骨相似,并且热稳定性与纯BC相比有所提高;纳米复合材料在热分解时存在复杂的吸热放热现象;由于HAp的加入,与BC相比,复合材料的玻璃化转变温度向高温区域移动.
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Key words
Bacterial cellulose,Biomineralization,Hydroxyapatite,Nanocomposite,Thermal analysis
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