摘要
采用原位矿化复合-固相挤出技术制备羟基磷灰石/高密度聚乙烯(HA/HDPE)复合材料。结果表明,原位矿化-固相挤出制备的HA/HDPE复合材料是一种纳米HA颗粒均匀分散、界面结合强度高、HA/HDPE复合纤维定向排列的多尺度结构复合材料,在纳米尺度上HA均匀分散在HDPE基体中,在微米尺度上形成HA/HDPE复合纤维,在显微尺度上定向排列的HA/HDPE复合纤维形成织构结构。该HA/HDPE多尺度结构复合材料的力学性能与传统的熔融挤出的HA/HDPE复合材料相比有显著提高,拉伸强度达到245MPa,弯曲强度达到165MPa,拉伸模量为18.1GPa,力学性能均达到人体皮质骨的力学要求。
In order to enhance mechanical properties of hydroxyapatite/high-density polyethylene （HA/HDPE） composite,the process of biomineralization and solid-state extrusion was applied to prepare HA/HDPE composite based on the microstructure characteristics of human being＇s bone.Results show that （1） the HA/HDPE composite made by biomineralization and solid-state extrusion is a kind of composite with multi-scale structure,namely on the nano-scale,the interfacial strength is high; the HA nanoparticles disperse in the HDPE matrix homogeneously; on the micro-scale,the oriented and arrayed HA/HDPE composite fibers are formed.（2） coMPared with the composites made by traditional methods,the mechanical properties of HA/HDPE composite are improved significantly：The bend strength,tensile strength and Yong＇s modulus reaches 165 MPa,245 MPa and 18.1 GPa,respectively,which meet the mechanical requirements for cortical bone.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2010年第11期147-150,155,共5页
Polymer Materials Science & Engineering
基金
中国博士后科学基金(20070410305)
湖南省自然科学基金资助项目(07JJ3015)
