Fabrication and properties of dense thin films containing functionalized carbon nanofibers
Guzman, Mauricio E.
Schaefer, Joseph D.
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Lim, Chee-Sern; Guzman, Mauricio; Schaefer, Joseph; Minaie, Bob. 2013. Fabrication and Properties of Dense Thin Films Containing Functionalized Carbon Nanofibers. Thin Solid Films, v.534, p.111-114
In this study, dense thin films containing carboxylic acid-functionalized carbon nanofibers (O-CNFs) are fabricated by a two-step approach involving solution filtering and mechanical compression through a rolling process. Optical images reveal a notable change from porous to dense in the surface morphology of the rolled O-CNF thin film. Moreover, test results show that the tensile strength and electrical conductivity of the rolled thin film are improved by approximately 400% in comparison to the non-rolled thin film. Upon fracture, electron microscope image shows significant pull-out and alignment of O-CNFs parallel to the direction of the applied load due to interlocking mechanism within the highly entangled O-CNF network.
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