| 纳米磷灰石/聚D,L-乳酸生物复合材料制备与力学性能 |
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| 引用本文： | 邓迟,陈清宇,鲁雄,周绍兵,屈树新,翁杰. 纳米磷灰石/聚D,L-乳酸生物复合材料制备与力学性能[J]. 医用生物力学, 2008, 23(5): 385-389 |
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| 作者姓名： | 邓迟 陈清宇 鲁雄 周绍兵 屈树新 翁杰 |
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| 作者单位： | 乐山师范学院;西南交通大学材料先进技术教育部重点实验室 |
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| 基金项目： | 乐山师范学院重点资助项目(20804) |
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| 摘 要： | 目的观察溶液共混热压制备法能否提高纳米磷灰石(HA)/聚D,L-乳酸(PolyD,L杔actide,PDLLA)复合生物材料的力学性能。方法将HA/PDLLA分散至N,N-二甲基甲酰胺(DMF)有机溶剂中,在45℃下不断搅拌缓慢去除有机分散剂,干燥后打碎,放入模具中经100℃热压,获得纳米HA/PDLLA复合材料薄膜。结果透射电子显微镜(TEM)对不同含量的HA复合材料观察发现,纳米HA能被分散在PDLLA基材中。随着HA含量在复合材料中增加,HA出现了明显团聚现象,但总体上呈均匀的分布状态,说明热压前溶液共混处理有利于HA在复合材料中的分散。力学性能测试结果表明,上述溶液共混热压制备法能够增加HA与PDLLA的界面结合力,在合适的HA含量下,提高了材料的弹性模量、断裂应力及拉伸应力。结论溶液共混热压制备法能改善HA/PDLLA复合材料的力学性能。
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| 关 键 词： | 溶液共混 热压 复合材料 力学性能 |
Preparation and mechanical properties of nano-apatite/ Poly(D,L-lactide) biocomposite |
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| DENG Chi,,CHENG Qing-yu,LU Xiong,Zhou Shao-bin,QU Shuxin,WENG Jie. Preparation and mechanical properties of nano-apatite/ Poly(D,L-lactide) biocomposite[J]. Journal of Medical Biomechanics, 2008, 23(5): 385-389 |
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| Authors: | DENG Chi CHENG Qing-yu LU Xiong Zhou Shao-bin QU Shuxin WENG Jie |
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| Affiliation: | DENG Chi1,2,CHENG Qing-yu2,LU Xiong2,Zhou Shao-bin2,QU Shuxin2,WENG Jie2(1.Leshan Teachers College,Leshan,614000,China,2.Key Laboratory of Advanced Technologies of Materials,Ministry of Education,Chengdu 610031,China) |
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| Abstract: | Objective check if mechanical properties of Nano-apatite(HA)/ Poly(D,L-lactide)(PDLLA) biocomposite is improved by solution-coblending and hot-pressing techniques.Methods HA particles and PDLLA polymer,as two basic compositions of the biocomposite,were firstly dispersed in dimethyl formamide(DMF) dispersant,then the DMF was by inches cleaned out by intensively stirring in 45 oC.The resultant mixture including HA and PDLLA was fallen to pieces,and then pressed at 100oC in hot-pressing machine,finally,thin fi... |
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| Keywords: | Solution co-blending Hot-Pressing Composite Mechanical properties |
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