两步模压法制备聚乳酸/β-偏磷酸钙复合骨折内固定材料  

Preparation of Poly L-Lactide(PLLA)/ β-Calcium Metaphosphate (β-CMP) Fracture Innerfixation Composites by a Two-step Method

作　　者：廖立[1] 尹光福[2] 谢克难[1] 康云清[2] 龙沁[1] 

机构地区：[1]四川大学化学工程学院,四川成都610065 [2]四川大学材料科学与工程学院,四川成都610064

出　　处：《四川大学学报（工程科学版）》2009年第2期131-134,共4页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家"863"高技术资助项目(2002AA326080);四川大学青年科学基金资助项目(07048)

摘　　要：以聚乳酸和自制β-偏磷酸钙晶须为原料,采用"两步模压法"制备聚乳酸/β-偏磷酸钙晶须复合骨折内固定材料,并对复合材料的力学性能进行了检测。结果表明采用"两步模压法"制备的复合材料的力学性能明显优于"一步模压法"制备的复合材料,其最大抗弯强度和杨氏模量分别为126.33 MPa和4.36 GPa,接近于人体皮质骨的力学性能,能满足人体骨折内固定对固定材料的力学性能要求。A two-step method was used to prepare poly L-lactide(PLLA)/ β-calcium metaphosphate(β-CMP) fracture fixation composites.The mechanical strength of these composites was tested and the factors which would affect the mechanical strength were analyzed.The experimental results showed that the bending strength and Young s modulus of composites prepared by the two-step method were much better than those prepared by the two-step method,reached a maximum of 126.33 MPa and 4.36 GPa,respectively,which are close to tho...

关 键 词：聚乳酸 β-偏磷酸钙 骨折内固定 两步模压法 

分 类 号：R318.08[医药卫生—生物医学工程]