摘要
采用原位沉析法制备了壳聚糖/羟基磷灰石(CS/HA)复合棒材。用预先沉积的壳聚糖膜将含有Ca、P源的壳聚糖溶液与凝固液隔离,同时控制壳聚糖沉积与羟基磷灰石前驱体转化为羟基磷灰石的过程,使二者得以均匀复合。燃烧试验结果表明无机成分均匀分散于壳聚糖中,FT-IR、XRD和TEM测试证实原位生成羟基磷灰石,弯曲强度测试结果表明,原位沉析法制备的材料具有层状结构,CS/HA(质量比20/4)复合材料弯曲强度达133MPa,弯曲模量6.8GPa。
The CS/HA composites with a high performance were prepared via in situ precipitation.In this method,the calcium and phosphorus precursors were added into the solution of chitosan firstly,dispersed homogeneously.The pre-precipitated CS membrane controlled the process of CS precipitation and transformation of HA from the precursors.The results of burn-out tests indicated that the inorganic component was dispersed uniformly in chitosan matrix.FT-IR,XRD and TEM were carried out to determine the components and morphology of CS/HA.The results showed that the inorganic component was exactly nano-sized HA.The mechanical properties of CS/HA were evaluated by the three point bending test.The bending strength and modulus of CS/HA（mass ratio 20/4） were 133MPa and 6.8GPa.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2011年第1期128-131,共4页
Journal of Functional Materials
基金
“十一五”国家科技支撑计划资助项目(2007BAD07B05)
福建省海洋与渔业局重点资助项目(闽海渔合同号[2008]1-11)
关键词
壳聚糖
羟基磷灰石
原位沉析
内固定
chitosan
hydroxyapatite
in situ precipitation
internal fixation
