四类关节软骨修复材料的摩擦学性能对比研究  

The contrastive study on tribological properties of four biopolymers used for articular cartilage repair

作　　者：罗小兵[1] 张利[1] 王妍媖[1] 左奕[1] 邹琴[1] 黄棣[1] 李玉宝[1] 

机构地区：[1]四川大学分析测试中心,纳米生物材料研究中心,四川成都610064

出　　处：《功能材料》2011年第6期996-1000,共5页Journal of Functional Materials

基　　金：国家重点基础研究发展计划(973计划)资助项目(2007CB936102)

摘　　要：分别在生理盐水和代血浆润滑条件下对聚氨酯(PU)、聚酰胺(PA66)、乙烯-醋酸乙烯共聚物(EVA)和聚乙烯醇(PVA)水凝胶作为人工关节软骨的摩擦学性能进行了研究,与猪关节软骨进行对比,并用SEM观察样品磨痕表面微观形貌,分析其摩擦机理。结果显示,材料的平均摩擦系数都很小,但都高于天然猪关节软骨(POAC)的摩擦系数。PVA的平均摩擦系数与猪关节软骨最为接近,而PU和PA66的抗摩擦能力优于PVA和EVA。The tribological properties of polyurethane（PU）,polyamide66（PA66）,poly（ethylene-co-vinyl acetate）（EVA） and poly（vinyl alcohol）（PVA） hydrogels were investigated in the lubrication of physiological saline and plasma substitute and compared with that of pig articular cartilage（POAC）.The worn surfaces and the wearing mechanisms were also analysed by using SEM.The results indicate that the average friction coefficients of all samples are higher than that of POAC,among which the average value of PVA is the nearest to that of POAC,but its wear-resistance is not the best.It is also found that the wear-resistance of PU and PA66 are better than that of PVA and EVA,but the coefficient of the formers are bigger than that of the latters.

关 键 词：PU PA66 PVA EVA 摩擦学性能 

分 类 号：TB34[一般工业技术—材料科学与工程] TB302.1