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工程科学与技术:2006,38(4):92-95
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成型温度及压力对降解型PLLA/β-TCP 骨折内固定材料强度的影响
(四川大学 材料科学与工程学院 ,四川 成都 610065)
Preparation of Biodegradable Poly L-Lactide/β-Tricalcium Phosphate Fracture Innerfixation Composites
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投稿时间:2005-10-20    
中文摘要: 讨论了以PLLA和β-TCP为原料以高温低压力条件下的模压成型作为成型手段,制备了β-TCP/PLLA复合骨折内固定材料,并对所得复合材料的力学性能进行了测试,对影响材料的最终力学性能的因素作了分析。结果表明:以较低的成形压力(5 MPa)、200 ℃的成形温度,β-TCP粉末含量为20%时,制得的复合材料的力学性能最好。制备的复合材料的抗弯强度约为80 MPa,抗压强度约为75 MPa,基本满足骨折内固定的要求,为进一步的研究工作打下了基础。
中文关键词: β-磷酸三钙  聚乳酸  骨折内固定
Abstract:A process which consists of a solvent casting stage, a film crush up, and a compression molding stage was used to prepare fracture innerfixation composite materials of β-TCP/PLLA . The mechanical strength of these composite materials was tested and the factors which would affect the mechanical strength were analyzed. The experimental results showed that the β-TCP/PLLA composite materials manufactured under the conditions of 200 ℃ molding temperature and 20% β-TCP would possess a much better mechanical strength. The compressive yield strength and the bending strength of the composite were nearly 75 MPa and 80 MPa.
文章编号:20060419     中图分类号:    文献标志码:
基金项目:国家“863”高技术资助项目(2002AA326080);教育部优秀青年教师教学科研奖励基金资助项目(2002123)
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廖立,董刚,陈琳.成型温度及压力对降解型PLLA/β-TCP 骨折内固定材料强度的影响[J].工程科学与技术,2006,38(4):92-95.
.Preparation of Biodegradable Poly L-Lactide/β-Tricalcium Phosphate Fracture Innerfixation Composites[J].Advanced Engineering Sciences,2006,38(4):92-95.