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Synthesis and characterization of carbon nanotube-reinforced epoxy: Correlation between viscosity and elastic modulus |
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| Authors: | Pascal Hubert Behnam Ashrafi Kamal Adhikari James Meredith Srikar Vengallatore Jingwen Guan Benoit Simard |
| Affiliation: | 1. McGill University, Department of Mechanical Engineering, 817 Sherbrooke Street West, Montreal, QC, Canada H3A 2K6;2. Molecular and Nanomaterial Architectures Group, Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa, Ontario, Canada K1A 0R6 |
| Abstract: | We report the synthesis and characterization of nanocomposite thin films consisting of single-walled carbon nanotubes with different functionalization schemes dispersed in an epoxy matrix. The thermal, rheological, and mechanical properties of nanocomposite thin films were experimentally characterized to establish a relationship between processing and performance. The results from the rheological analysis confirmed that the nanotube type and functionalization strongly affect the resin viscosity during cure. A correlation between the rheological behaviour and the measured elastic properties was established. Nanotubes produced by plasma and functionalized with carboxyl group had the lowest influence on viscosity and led to the highest improvement in elastic properties. The measured increase in elastic modulus was consistent with predictions based on Mori–Tanaka micromechanics. |
| Keywords: | A. Nanocomposites A. Carbon nanotubes B. Mechanical properties D. Raman spectroscopy D. Rheology D. Thermogravimetric analysis (TGA) |
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