Preparation and mechanical characterization of laser ablated single-walled carbon-nanotubes/polyurethane nanocomposite microbeams

Louis Laberge Lebel, Brahim Aissa, My Ali El Khakani, Daniel Therriault

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We report on the preparation of nanocomposites consisting of laser synthesized single-walled carbon nanotubes (C-SWNTs) reinforcing a polyurethane. Prior to their incorporation into the polymer matrix, the C-SWNTs were purified, and characterized by means of various techniques. The purification in nitric acid added carboxylic groups to the C-SWNTs. A procedure to properly disperse the nanomaterials in the polymer was developed involving high shear mixing using a three-roll mill and a non-covalent functionalization of the nanotubes by zinc protoporphyrin IX molecule. The incorporation of the C-SWNTs into the resin led to an increase of the viscosity and the apparition of a slight shear-thinning behavior. A further increase of the shear-thinning behavior using fumed silica particles enabled the direct-write fabrication of microbeams. Mechanical characterization revealed significant increase in both strength (by ∼64%) and modulus (by more than 15 times). These mechanical enhancements are believed to be a consequence of the successful covalent and the non-covalent functionalizations of the nanotubes.

Original languageEnglish
Pages (from-to)518-524
Number of pages7
JournalComposites Science and Technology
Volume70
Issue number3
DOIs
Publication statusPublished - Mar 2010
Externally publishedYes

Fingerprint

Polyurethanes
Single-walled carbon nanotubes (SWCN)
Nanocomposites
Shear thinning
Lasers
Nanotubes
Nitric Acid
Nitric acid
Polymer matrix
Nanostructured materials
Silicon Dioxide
Purification
Polymers
Zinc
Resins
Silica
Viscosity
Fabrication
Molecules

Keywords

  • A. Carbon nanotubes
  • A. Nano composites
  • B. Mechanical properties
  • D. Rheology
  • E. Extrusion

ASJC Scopus subject areas

  • Engineering(all)
  • Ceramics and Composites

Cite this

Preparation and mechanical characterization of laser ablated single-walled carbon-nanotubes/polyurethane nanocomposite microbeams. / Lebel, Louis Laberge; Aissa, Brahim; Khakani, My Ali El; Therriault, Daniel.

In: Composites Science and Technology, Vol. 70, No. 3, 03.2010, p. 518-524.

Research output: Contribution to journalArticle

@article{818861a5159944449234c9ef16bd48e7,
title = "Preparation and mechanical characterization of laser ablated single-walled carbon-nanotubes/polyurethane nanocomposite microbeams",
abstract = "We report on the preparation of nanocomposites consisting of laser synthesized single-walled carbon nanotubes (C-SWNTs) reinforcing a polyurethane. Prior to their incorporation into the polymer matrix, the C-SWNTs were purified, and characterized by means of various techniques. The purification in nitric acid added carboxylic groups to the C-SWNTs. A procedure to properly disperse the nanomaterials in the polymer was developed involving high shear mixing using a three-roll mill and a non-covalent functionalization of the nanotubes by zinc protoporphyrin IX molecule. The incorporation of the C-SWNTs into the resin led to an increase of the viscosity and the apparition of a slight shear-thinning behavior. A further increase of the shear-thinning behavior using fumed silica particles enabled the direct-write fabrication of microbeams. Mechanical characterization revealed significant increase in both strength (by ∼64{\%}) and modulus (by more than 15 times). These mechanical enhancements are believed to be a consequence of the successful covalent and the non-covalent functionalizations of the nanotubes.",
keywords = "A. Carbon nanotubes, A. Nano composites, B. Mechanical properties, D. Rheology, E. Extrusion",
author = "Lebel, {Louis Laberge} and Brahim Aissa and Khakani, {My Ali El} and Daniel Therriault",
year = "2010",
month = "3",
doi = "10.1016/j.compscitech.2009.12.004",
language = "English",
volume = "70",
pages = "518--524",
journal = "Composites Science and Technology",
issn = "0266-3538",
publisher = "Elsevier BV",
number = "3",

}

TY - JOUR

T1 - Preparation and mechanical characterization of laser ablated single-walled carbon-nanotubes/polyurethane nanocomposite microbeams

AU - Lebel, Louis Laberge

AU - Aissa, Brahim

AU - Khakani, My Ali El

AU - Therriault, Daniel

PY - 2010/3

Y1 - 2010/3

N2 - We report on the preparation of nanocomposites consisting of laser synthesized single-walled carbon nanotubes (C-SWNTs) reinforcing a polyurethane. Prior to their incorporation into the polymer matrix, the C-SWNTs were purified, and characterized by means of various techniques. The purification in nitric acid added carboxylic groups to the C-SWNTs. A procedure to properly disperse the nanomaterials in the polymer was developed involving high shear mixing using a three-roll mill and a non-covalent functionalization of the nanotubes by zinc protoporphyrin IX molecule. The incorporation of the C-SWNTs into the resin led to an increase of the viscosity and the apparition of a slight shear-thinning behavior. A further increase of the shear-thinning behavior using fumed silica particles enabled the direct-write fabrication of microbeams. Mechanical characterization revealed significant increase in both strength (by ∼64%) and modulus (by more than 15 times). These mechanical enhancements are believed to be a consequence of the successful covalent and the non-covalent functionalizations of the nanotubes.

AB - We report on the preparation of nanocomposites consisting of laser synthesized single-walled carbon nanotubes (C-SWNTs) reinforcing a polyurethane. Prior to their incorporation into the polymer matrix, the C-SWNTs were purified, and characterized by means of various techniques. The purification in nitric acid added carboxylic groups to the C-SWNTs. A procedure to properly disperse the nanomaterials in the polymer was developed involving high shear mixing using a three-roll mill and a non-covalent functionalization of the nanotubes by zinc protoporphyrin IX molecule. The incorporation of the C-SWNTs into the resin led to an increase of the viscosity and the apparition of a slight shear-thinning behavior. A further increase of the shear-thinning behavior using fumed silica particles enabled the direct-write fabrication of microbeams. Mechanical characterization revealed significant increase in both strength (by ∼64%) and modulus (by more than 15 times). These mechanical enhancements are believed to be a consequence of the successful covalent and the non-covalent functionalizations of the nanotubes.

KW - A. Carbon nanotubes

KW - A. Nano composites

KW - B. Mechanical properties

KW - D. Rheology

KW - E. Extrusion

UR - http://www.scopus.com/inward/record.url?scp=75149182688&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=75149182688&partnerID=8YFLogxK

U2 - 10.1016/j.compscitech.2009.12.004

DO - 10.1016/j.compscitech.2009.12.004

M3 - Article

AN - SCOPUS:75149182688

VL - 70

SP - 518

EP - 524

JO - Composites Science and Technology

JF - Composites Science and Technology

SN - 0266-3538

IS - 3

ER -