Do electrospun polymer fibers stick?
Do electrospun polymer fibers stick?
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DOI：
10.1021/la1022328
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发表时间：
2010-08
期刊：
影响因子：
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通讯作者：
Q. Shi;K. Wan;S. Wong;Pei Chen;T. Blackledge
中科院分区：
文献类型：
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作者：
Q. Shi;K. Wan;S. Wong;Pei Chen;T. Blackledge
用纳米拉伸试验机直接测量了电纺聚己内酯(PCL)纤维之间的粘附力。用原子力显微镜(AFM)测定了纤维的表面粗糙度，用差示扫描量热仪(DSC)和广角X射线衍射仪(WAXD)对纤维的结构因素进行了表征。“拉出力”为10(-6)N数量级，粘附能为190+/-7MJ/m(2)。粘附力随纤维半径的减小而增加。实验数据采用经典的Johnson-Kendall-Roberts(JKR)接触力学模型进行分析。这项研究为仿生胶粘剂和设备的未来发展提供了富有成效的见解。
Adhesion between electrospun polycaprolactone (PCL) fibers was directly measured in a cross-cylinder geometry using a nanoforce tensile tester. The surface roughness of fibers was determined by an atomic force microscope (AFM), and the structural factors were characterized by differential scanning calorimeter (DSC) and wide-angle X-ray diffraction (WAXD). "Pull-off" force was found to be in the order of 10(-6) N, and the adhesion energy was 190 +/- 7 mJ/m(2). Adhesion increases with decreasing fiber radius. The experimental data are analyzed by the classical Johnson-Kendall-Roberts (JKR) contact mechanics model. The study provides fruitful insights into future development of bio-inspired adhesives and devices.