Single-walled carbon nanotubes / polymer nanocomposites microbeams by means of ultraviolet-assisted direct-write assembly

Louis Laberge Lebel, Brahim Aissa, M. A E Khakani, Daniel Therriault

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report the successful fabrication of nanocomposite microbeams by means of ultraviolet-assisted direct-write assembly. The nanocomposite consists of a UV curable resin reinforced by single-walled carbon nanotubes (C-SWNTs). The C-SWNTs were produced by the UV-laser ablation method, physico-chemically purified and dispersed in the polymer matrix using sonication in dichloromethane. The as-grown and purified C-SWNTs were systematically characterized by microRaman and photoelectron spectroscopy. Carboxyl groups were attached to the C-SWNT during the purification procedure. Eight different nanocomposite blends were produced from as-grown and purified CSWNT at varying concentrations. The UV-assisted direct-write approach consists of the robotically-controlled micro-extrusion of the C-SWNT/polymer nanocomposite under UV exposure. Cylindrical microbeams were deposited in a layer-by-layer mode and in a freeform fabrication fashion in order to achieve a mechanical testing micro-coupon. A comprehensive study under dynamic mechanical analyzer was performed on microrods (diameter (d) of ̃200 um) spanning a distance (Z.) of 3 mm for an aspect ratio (L/d) of 15. An increase by ̃63% in strength and ̃47% in modulus is measured for the microbeams using the 0,6wt% purified C-SWNT reinforcement.

Original languageEnglish
Title of host publicationDesign, Manufacturing and Applications of Composites: Proceedings of the 7th Joint Canada-Japan Workshop on Composites
Pages40-47
Number of pages8
Publication statusPublished - 2008
Externally publishedYes
EventDesign, Manufacturing and Applications of Composites: 7th Joint Canada-Japan Workshop on Composites - Fujisawa, Kanagawa
Duration: 28 Jul 200831 Jul 2008

Other

OtherDesign, Manufacturing and Applications of Composites: 7th Joint Canada-Japan Workshop on Composites
CityFujisawa, Kanagawa
Period28/7/0831/7/08

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ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Ceramics and Composites

Cite this

Lebel, L. L., Aissa, B., Khakani, M. A. E., & Therriault, D. (2008). Single-walled carbon nanotubes / polymer nanocomposites microbeams by means of ultraviolet-assisted direct-write assembly. In Design, Manufacturing and Applications of Composites: Proceedings of the 7th Joint Canada-Japan Workshop on Composites (pp. 40-47)