聚己酸内酯纳米纤维的拉伸试验及表面表征  

Tensile Testing and Surface Characterization of Electrospun PCL Nanofibers

作　　者：原波[1,2] 王珺[2] 韩平畴[3] 林水德[4] 

机构地区：[1]复旦大学力学与工程科学系 [2]复旦大学材料科学系,上海200433 [3]北京大学工学院,北京100871 [4]新加坡国立大学生物工程部与机械工程系,新加坡117576

出　　处：《高分子材料科学与工程》2008年第11期126-129,共4页Polymer Materials Science & Engineering

基　　金：上海市科委自然科学基金资助项目STCSM(04JC14012)

摘　　要：文中采用静电纺丝法制备了纳米聚己酸内酯纤维,对单根纤维进行了单向拉伸试验,研究了单根纤维在纳米尺度的基本力学性能;并通过原子力显微镜研究了纤维表面结构特征对纤维力学性能的影响。结果表明,在拉伸载荷作用下,随着纤维直径的减小,纤维的杨氏模量没有显著的变化;纤维表面特征对纤维的拉伸强度有重要影响,但对纤维的杨氏模量影响不大。For reasons of high porosity, biocompatibility and biodegradability, polycaprolactone （PCL） nanofibers have been gaining popularity for use in the construction of bio-scaffolds in tissue engineering applications. In this paper, electrospinning method was used to fabricate PCL nanofibers. Uniaxial tensile testing was performed on a single fiber to investigate its mechanical properties at the nano-scale level. Further, Atomic Force Microscopy （AFM） was employed to investigate the surface structure effects on the mechanical properties of the nanofibers. The results show that under tensile loading the Young＇s modulus of the nanofibers does not exhibit any significant variation with the decreasing fiber diameters. On the other hand, the surface morphology can affect the tensile strength of the nanofibers but not their Young＇s modulus.

关 键 词：纳米纤维 静电纺丝法 拉伸试验 表面特征 

分 类 号：TB383[一般工业技术—材料科学与工程]