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Measuring Interfacial Adhesion of Carbon Nanotube Bundles and Electrospun Polymer Fibers

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journal contribution
posted on 03.10.2017, 00:00 by Xin Wang, Shing-Chung Wong, Yung Joon Jung, Kai-tak Wan
Adhesion at the dissimilar interface of single wall carbon nanotube (SWCNT) bundles and electrospun polymer nanofibers (Espun) was directly measured using a nano cheese cutter. A sample fiber suspended at the tip of an atomic force microscope cantilever and another freestanding fiber on a mica substrate were arranged in a cross-cylinder configuration and allowed to adhere. External tensile load led to spontaneous detachment or “pull-off”. Adhesion was shown to be dominated by van der Waals attraction, and the detachment process conforms to the classical Maugis parameter in the JKR–DMT transition.