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.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
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)
