制备工艺对HA/PA66复合材料组织结构与性能的影响  

Influence of Preparation Technology on the Microstructure and Properties of HA/PA66 Biomaterial

作　　者：刘德宝[1,2] 陈民芳[1,3] 沈荣臻[1] 孙丽丽[1] 

机构地区：[1]天津理工大学材料科学与工程学院 [2]天津市光电显示材料与器件重点实验室 [3]显示材料与光电器件省部共建教育部重点实验室,天津300384

出　　处：《高分子材料科学与工程》2010年第8期134-136,140,共4页Polymer Materials Science & Engineering

基　　金：天津市自然科学基金重点项目(09JCZDJC18500)

摘　　要：采用熔融共混和溶胶共混工艺制备了羟基磷灰石/尼龙66(HA/PA66)复合材料,对两种工艺制备的HA/PA66复合材料的微观组织结构、力学性能及生物活性进行了对比研究。结果表明,溶胶共混工艺制备的HA/PA66复合材料中HA颗粒分散的均匀程度及界面结合强度均优于熔融共混工艺,但由于溶胶复合制备过程中PA66溶解以及复合过程中HA与PA66基体之间的氢键作用限制了PA66分子的有序排列,造成复合材料的结晶度低于熔融共混工艺制备的HA/PA66复合材料的结晶度,力学强度(35MPa)也低于熔融共混工艺制备的复合材料的力学强度(41MPa)。两种方式制备的HA/PA66复合材料模拟体液浸泡后都表现出了良好的生物活性。Hydroxyapatite/polyamide66 （n-HA/PA66） composite was prepared respectively by melting mixing and sol mixing technology. Scanning electron microscope （$EM）, differential scanning calorimetr （DSC）, electronic tensile testing machine and simulated body fluid （SBF） were adopted to study the microstructure, crystallization behaviour, mechanical properties and bioactivity of HA/PA66 composites. As a results, the distribution uniformity of HA particles and the interface combination strength of HA/PA66 composites prepared by sol mixing are better than that of HA/PA66 composites prepared by melting mixing technology, but due to the dissolution of PA66 and hydrogen-bonding between HA and PA66 matrix, crystallization degree and tensile strength of HA/PA66 composites are lower than that of HA/PA66 composites prepared by melting mixing technology. Both HA/PA66 composites prepared by this two routes exhibit good bioactivity after immersion in SBF for two weeks.

关 键 词：制备工艺 羟基磷灰石/尼龙66复合材料 组织结构 性能 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]