scholarly journals Ultra-High Molecular Weight Polyethylene Reinforced with Multiwall Carbon Nanotubes: In Vitro Biocompatibility Study Using Macrophage-Like Cells

Lubricants ◽  
2015 ◽  
Vol 3 (3) ◽  
pp. 597-610 ◽  
Author(s):  
Nayeli Camacho ◽  
Stephen Stafford ◽  
Kristine Garza ◽  
Raquel Suro ◽  
Kristina Barron
Keyword(s):  
Carbon Nanotubes ◽  
Molecular Weight ◽  
High Molecular Weight ◽  
Multiwall Carbon Nanotubes ◽  
In Vitro Biocompatibility ◽  
Ultra High Molecular Weight ◽  
Biocompatibility Study ◽  
Multiwall Carbon

Nanozirconia Partially Coated MWNT: Nanostructural Characterization and Cytotoxicity and Lixivation Study

2007 ◽  
Vol 361-363 ◽  
pp. 775-778 ◽  
Author(s):  
Nere Garmendia ◽  
Leire Bilbao ◽  
Roberto Muñoz ◽  
L. Goikoetxea ◽  
Ainara García ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Hydrothermal Synthesis ◽  
Multiwall Carbon Nanotubes ◽  
Ceramic Matrix ◽  
In Vitro Biocompatibility ◽  
Coated Carbon ◽  
Multiwall Carbon ◽  
Zirconia Nanoparticles ◽  
Sintered Product

Carbon nanotubes could avoid the crack propagation and enhance the toughness of the ceramic material used for prostheses applications. So nanozirconia partially coated carbon nanotubes have been obtained via hydrothermal synthesis of zirconia nanoparticles in presence of multiwall carbon nanotubes. The as covered nanotubes should have a better wettability in the ceramic matrix and improve the dispersion of the CNTs in the nanocomposite, which results in a new ceramic biomaterial with a longer lifetime and better reliability. The obtained product has been structurally characterized by several techniques such as FTIR, XRD, SEM, AFM, EELS, XPS and TGA. The citotoxicity of the sintered product was studied by the change in the pH and ICP-AES in in-vitro biocompatibility tests.

scholarly journals Orientation and Dispersion Evolution of Carbon Nanotubes in Ultra High Molecular Weight Polyethylene Composites under Extensional-Shear Coupled Flow: A Dissipative Particle Dynamics Study

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 154 ◽  
Author(s):  
Junxia Wang ◽  
Changlin Cao ◽  
Xiaochuan Chen ◽  
Shijie Ren ◽  
Yu Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Molecular Weight ◽  
High Molecular Weight ◽  
Dissipative Particle Dynamics ◽  
Mean Square Displacement ◽  
Particle Dynamics ◽  
Distribution Functions ◽  
Coupled Flow ◽  
Uhmwpe Composites ◽  
Ultra High Molecular Weight

The property of carbon nanotubes (CNTs)-based composites are significantly dependent on the orientation and dispersion evolution of CNTs in the polymer matrix. In this work, the dissipative particle dynamics (DPD) simulations are employed to discover the orientation and dispersion evolution of CNTs in ultra–high molecular weight polyethylene (UHMWPE) under extensional–shear coupled flow conditions for the first time. In this paper, we investigate the roles of the increasing extensional-shear coupled rate in morphology of CNTs/UHMWPE composites by varying CNTs concentration and observe that the system under consideration lies in the same evolution morphologies. When comparing our results for various morphologies, we notice that the orientation is affected more significantly by changing the extensional-shear coupled rates. A good alignment appears with an increase of extensional-shear coupled rates, which transform it into ordered morphology. In addition, a higher extensional-shear coupled rate does not necessarily contribute to better dispersion even though CNTs concentration varies, as shown by the mean square displacement (MSD) and the relative concentration distribution functions of CNTs in CNTs/UHMWPE composites.

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