scholarly journals The Rheology and Microstructure of Carbon Nanotube (CNT) Suspensions

2007 ◽  
Author(s):  
Anson Ma ◽  
Francisco Chinesta ◽  
Malcolm Mackley
Keyword(s):  
Carbon Nanotube ◽  
Cnt Suspensions

Direct Filament Formation of Biological Carbon Nanotube Suspensions

2012 ◽  
Vol 2012 (CICMT) ◽  
pp. 000132-000135
Author(s):  
Hiroya Abe ◽  
Zhenquan Tan ◽  
Akira Kondo ◽  
Makio Naito
Keyword(s):  
Carbon Nanotube ◽  
Liquid Crystals ◽  
Rheological Properties ◽  
Water System ◽  
Sodium Deoxycholate ◽  
Lyotropic Liquid Crystals ◽  
Shear Direction ◽  
Filament Formation ◽  
Self Association ◽  
Cnt Suspensions

In this study, aqueous carbon nanotube (CNT) suspensions were prepared using biological surfactant of sodium deoxycholate (NaDC). The influence of NaDC concentration on the NaDC self-association in water and the rheological responses of the NaDC-CNT-water system were investigated. It has been found that the yield stress of the suspension increased with NaDC concentration, which was strongly related to the NaDC self-association of lyotropic liquid crystals. Due to the enhanced rheological properties at high NaDC concentration (30%), it allowed the shear-induced filament formation in which the CNTs were aligned along to the shear direction. This filament formation may be attractive for transferring aligned CNTs on substrates in a controlled manner.

scholarly journals The rheological modelling of carbon nanotube (CNT) suspensions in steady shear flows

2008 ◽  
Vol 1 (2) ◽  
pp. 83-88 ◽  
Author(s):  
Anson W. K. Ma ◽  
Francisco Chinesta ◽  
Malcolm R. Mackley ◽  
Amine Ammar
Keyword(s):  
Carbon Nanotube ◽  
Shear Flows ◽  
Steady Shear ◽  
Rheological Modelling ◽  
Cnt Suspensions

scholarly journals The Rheology of Carbon Nanotube (CNT) Suspensions: Experiments and Modelling

2008 ◽  
Author(s):  
Anson W. K. Ma ◽  
Francisco Chinesta ◽  
Malcolm R. Mackley ◽  
Albert Co ◽  
Gary L. Leal ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Cnt Suspensions

Effects of Various Carbon Nanotube Suspensions on A549, THP-1, and Peritoneal Macrophage Cells

2015 ◽  
Vol 24 ◽  
pp. 1-13 ◽  
Author(s):  
Masanori Horie ◽  
Haruhisa Kato ◽  
Shigehisa Endoh ◽  
Ayako Nakamura ◽  
Junko Maru ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Cell Membrane ◽  
Fiber Length ◽  
Membrane Damage ◽  
Mitochondrial Activity ◽  
Cell Membrane Damage ◽  
Cellular Effects ◽  
Intracellular Ros ◽  
Peritoneal Macrophage Cells ◽  
Cnt Suspensions

The effects of iron content, fiber length, and stability of carbon nanotube (CNT) suspension on cells were examined. Five kinds of single-wall carbon nanotube (SWCNT) suspensions were prepared: with catalytic iron, without iron, long SWCNTs (stable), short SWCNTs (stable), and short SWCNT (unstable). These suspensions were applied to A549, THP-1, and mouse peritoneal macrophage cells. After a 24-h exposure, the mitochondrial activity, cell membrane damage, intracellular oxidative stress, and expression of cytokine genes were determined. Among these properties of SWCNTs, stability of CNT suspension had the most influence on the cells, whereas the effects of iron content and fiber length were small. The unstable SWCNT suspension caused a substantial increase in intracellular ROS levels. Additionally, the cellular effects of stable multi-wall carbon nanotubes (MWCNTs) were examined. The MWCNT suspension did not show any cellular effects. Overall, influences of CNT suspension on mitochondrial activity and cell membrane damage were small. These results suggest that the physical properties of CNT suspension are important factors for their cellular effects. Thus, CNT suspensions prepared with the same material but having different physical properties would differ in the cellular effects they exert, including cytotoxicity. Therefore, physical characterization of CNT suspensions is essential to the evaluation of CNT toxicity. In particular, stability of CNT suspension notably influenced the intracellular ROS level.

Carbon Nanotube and Graphene Device Physics

2009 ◽  
Author(s):  
H.-S. Philip Wong ◽  
Deji Akinwande
Keyword(s):  
Carbon Nanotube ◽  
Device Physics

Carbon nanotube instillation in mice causes sustained pulmonary inflammation and apoptosis of alveolar macrophages

Pneumologie ◽  
2011 ◽  
Vol 65 (12) ◽  
Author(s):  
NC Habel ◽  
S Hirn ◽  
F Tian ◽  
O Eickelberg ◽  
T Stoeger
Keyword(s):  
Carbon Nanotube ◽  
Alveolar Macrophages ◽  
Pulmonary Inflammation
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