Tan E P S, Ng S Y, Lim C T
Nano Biomechanics Laboratory, Division of Bioengineering, Department of Mechanical Engineering, Faculty of Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore.
Biomaterials. 2005 May;26(13):1453-6. doi: 10.1016/j.biomaterials.2004.05.021.
Due to the difficulty in handling micro and nanoscale fibers and measuring the small load required for deformation, mechanical properties of these fibers have not been widely characterized. In this study, tensile test of a single-strand polycaprolactone electrospun ultrafine fiber was performed using a nano tensile tester. The tested fiber exhibited the characteristic low strength and low modulus but high extensibility at room temperature. The mechanical properties were also found to be dependent on fiber diameter. Fibers with smaller diameter had higher strength but lower ductility due to the higher 'draw ratio' that was applied during the electrospinning process.
由于处理微米和纳米级纤维以及测量变形所需的小负荷存在困难，这些纤维的机械性能尚未得到广泛表征。在本研究中，使用纳米拉伸测试仪对单股聚己内酯电纺超细纤维进行了拉伸试验。测试的纤维在室温下表现出低强度、低模量但高延伸率的特性。还发现机械性能取决于纤维直径。由于在静电纺丝过程中应用了更高的“拉伸比”，直径较小的纤维具有更高的强度但更低的延展性。
