Electromechanical strain sensing using polycarbonate-impregnated carbon nanotube-graphene nanoplatelet hybrid composite sheets

Title
Electromechanical strain sensing using polycarbonate-impregnated carbon nanotube-graphene nanoplatelet hybrid composite sheets
Authors
권순조
Keywords
A. Carbon nanotube A. Hybrid composites A. Functional composites A. Nanocomposites B. Electrical properties
Issue Date
2013
Publisher
COMPOSITES SCIENCE AND TECHNOLOGY
Series/Report no.
COMPOSITES SCIENCE AND TECHNOLOGY; vol.89 startpage 1 endpage 9
Abstract
We report an experimental study on the electromechanical strain sensing ability of polycarbonateimpregnated hybrid sheets consisting of exfoliated graphite nanoplatelets, nanographene platelets, and multi-walled carbon nanotubes. The hybrid sheets were fabricated through surfactant-aided carbon nanomaterial dispersion followed by vacuum-induced filtration. The inherently porous sheets were impregnated with polycarbonate by infiltrating a polycarbonate?chloroform solution through the sheets. SEM analyses revealed that combining nanomaterials of various sizes and dimensions can serve as a means to control the porous network structure, which allows controlled polymer impregnation and tailored strain sensitivity. The wide-area strain sensing ability of the polymer-impregnated composite sheets was demonstrated by subjecting the composites with multiple electrodes to a flexural load and measuring the piezoresistivity in situ. The study demonstrated successful hybridization of 1D fiber-like and 2D platelet-like carbon nanomaterials into freestanding sheets with controlled nanostructure and properties, which can be used as preforms for easy-to-handle, high-carbon-content, multi-functional composite sheets.
URI
http://dx.doi.org/10.1016/j.compscitech.2013.09.005
http://dspace.inha.ac.kr/handle/10505/32604
ISSN
0266-3538
Appears in Collections:
College of Engineering(공과대학) > Biotechnology (생명공학) > Journal Papers, Reports(생명공학 논문, 보고서)
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