MWCNT – TechConnect Briefs

Development of surface chemical approaches for detection and characterization of multi-walled carbon nanotubes dispersed in a polymer composite

Gorham J.M., Osborn W.A., Woodcock J.W., Scott K.C.K., Heddleston J.M., Hight Walker A.R., Gilman J.W., NIST, US

Multi-walled carbon nanotubes (MWCNT) and other carbon nanofillers are used in different applications to enhance the materials and electrical properties of consumer products as polymer composites. As a result, concern has arisen regarding the potential [...]

Electrically conductive polypropylene fibers and tapes

Martin F., Centre of Advanced Surface Engineering-AIN, ES

We report here the development of electrically conductive polypropylene MWCNT fibers and tapes with conductivities up to 70 S/m (8% wt) with a percolation threshold at 0.5%. Using a solution compounding method assisted by sonication [...]

Effect of γ-ray irradiated MWCNTs on electrical conductivity of a PET/graphite composite for a bipolar plate application

Kim D-H., Son Y., Kongju National University, KR

The effects of a compounding method and γ-ray treated multiwall carbon nanotubes (MWCNTs) on the electrical conductivity of graphite/PET composites were investigated. We found that dispersion of MWCNTs in the PET phase plays a critical [...]

Ultrafine Sensing Using Carbon Nanotube Arrays

Korach C.S., Cao C., Anger R., Chang S.-H., Kao I., Kukta R.V., Stony Brook University, US

Arrays of Carbon Nanotubes (CNTs) have shown the ability to react as foam-like structures and display local buckling within the bulk. The arrays, or turfs, are high aspect ratio CNT fibers that extend up to [...]

Characterizing Environmental Transformation of Multi-walled Carbon Nanotubes and Carbon Nano-Fiber Composites using Thermal Analysis and Related Hyphenated Techniques

Sahle-Demessie E., Zhao A., Salamon A.W., Cassel B., Gagliardi N.A., U.S. Environmental Protection Agency, US

Thermogravimetric analysis (TGA) coupled with gas chromatography and mass spectroscopy (TGA/GCMS), for the evolved gas analysis, has given insight to the stability and kinetics of structural changes and determining adsorbed organics to nanomaterials and nanocomposites. [...]

Effect of γ-ray irradiated MWCNTs on electrical conductivity of a PET/graphite composites

Son Y., Kongju National University, KR

The effects of a compoundingmethod and γ-ray treatedmultiwall carbon nanotubes (MWCNTs) on the electrical conductivity of graphite/PET composites were investigated. We found that dispersion of MWCNTs in the PET phase plays a critical role in [...]

Visible Photoluminescence Emission from Chemically Synthesized MWCNT/TiO2 Hybrid Nanostructure

Paul R., Kumbhakar P., Mitra A.K., National Institute of Technology, Durgapur, IN

We report here a simple chemical precipitation process to synthesize a heterostructure of multi-walled carbon nanotubes (MWCNTs) and TiO2 (titania) nanoparticles of average size 3.5 nm. The hybrid structure has been characterized by high resolution [...]

Role of interlayer interaction in the mechanical properties of a multi- walled carbon nanotube and a single-walled carbon nanotube bundle

Talukdar K., Mitra A.K., National Institute of Technology, Durgapur, IN

Molecular dynamics simulation is performed on a SWCNT bundle made up of four (5, 5) SWCNTs and on an armchair MWCNT taking Brenner’s 2nd generation reactive empirical bond order potential. The interlayer interaction in the [...]

Ultra-Structural Analysis of the Interaction of Carboxylated Multi-Walled Carbon Nanotubes with Human Blood Platelets

Lacerda S.H., Semberova. J., Holada. K., Simakova O., Gelderman-Fuhrmann M.P., Simak J., Simakova O., FDA, US

Carbon nanotubes (CNTs) are a promising new class of materials with many potential biomedical applications. CNTs have profound impact on the development of diagnostic biosensors, drug delivery nanosystems, imaging nanoprobes for intravascular use or other [...]

Reinforcement of Abrasion Resistance & Heat Buildup for Tire Tread filled with Multi-Wall Carbon Nanotubes (MWCNTs)

Oh W.S., Choi W.J., Choi Y.H., Choi W.J., Choi Y.H., Park J., Lee Y-S, NANOHUB Co., Ltd, KR

A tire tread composites containing SBR/NR rubber blend and varying proportions of multi-wall carbon nanotubes (MWCNTs)/carbon black (CB) including a silane-coupling agent [Bis-(3-triethoxysilylpropyl)tetrasulfane] have been investigated in order to reinforce abrasion resistance