Structural and morphological studies on the deformation behavior of polypropylene/multi-walled carbon nanotubes nanocomposites prepared through ultrasound-assisted melt extrusion process

2014 ◽  
Vol 53 (7) ◽  
pp. 475-491 ◽  
Author(s):  
José M. Mata-Padilla ◽  
Carlos A. Ávila-Orta ◽  
Francisco J. Medellín-Rodríguez ◽  
Ernesto Hernández-Hernández ◽  
Rosa M. Jiménez-Barrera ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Deformation Behavior ◽  
Extrusion Process ◽  
Melt Extrusion ◽  
Morphological Studies ◽  
Multi Walled Carbon Nanotubes ◽  
Ultrasound Assisted ◽  
Walled Carbon Nanotubes

scholarly journals Metamaterial Behavior of Polymer Nanocomposites Based on Polypropylene/Multi-Walled Carbon Nanotubes Fabricated by Means of Ultrasound-Assisted Extrusion

Materials ◽  
2016 ◽  
Vol 9 (11) ◽  
pp. 923 ◽  
Author(s):  
Juan Pérez-Medina ◽  
Miguel Waldo-Mendoza ◽  
Víctor Cruz-Delgado ◽  
Zoe Quiñones-Jurado ◽  
Pablo González-Morones ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Nanocomposites ◽  
Multi Walled Carbon Nanotubes ◽  
Ultrasound Assisted ◽  
Walled Carbon Nanotubes

Facile synthesis of SnO2 nanoparticle intercalated unzipped multi-walled carbon nanotubes via an ultrasound-assisted route for symmetric supercapacitor devices

2020 ◽  
Vol 4 (10) ◽  
pp. 5120-5131
Author(s):  
Murugesan Krishnaveni ◽  
Jerry J. Wu ◽  
Sambandam Anandan ◽  
Muthupandian Ashokkumar
Keyword(s):  
Carbon Nanotubes ◽  
Facile Synthesis ◽  
Symmetric Supercapacitor ◽  
Sno2 Nanoparticle ◽  
Multi Walled Carbon Nanotubes ◽  
Ultrasound Assisted ◽  
Walled Carbon Nanotubes

SnO2 nanoparticle intercalated unzipped multi-walled carbon nanotubes via an ultrasound-assisted route for symmetric supercapacitor devices.

MANUFACTURING AND CHARACTERIZATION OF CARBON NANOTUBE/POLYETHYLENE COMPOSITES

2005 ◽  
Vol 04 (01) ◽  
pp. 55-72 ◽  
Author(s):  
HASSAN MAHFUZ ◽  
ASHFAQ ADNAN ◽  
VIJAYA K. RANGARI ◽  
SHAIK JEELANI
Keyword(s):  
Carbon Nanotubes ◽  
Thermo Gravimetric Analysis ◽  
Extrusion Direction ◽  
Extrusion Process ◽  
Gravimetric Analysis ◽  
Scanning Calorimetry ◽  
Neat Polymer ◽  
Single Screw Extrusion ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The present study describes a method to fabricate polymer matrix nanocomposites by reinforcing multi-walled carbon nanotubes through an extrusion process. Linear low density polyethylene (LLDPE) powder and multi-walled carbon nanotubes (CNTs) are first dry mixed and extruded in the form of filaments by a single screw extrusion process. After extrusion, the filament is partially cooled by chilled air, dried, and continuously wound in a spool. The filaments are then laid in roving, stacked in a unidirectional fashion, and consolidated in a compression molding machine to come up with laminated composites. Thermo gravimetric analysis (TGA) has been performed to compare the thermal stability of as-fabricated composites with the neat polymer. The TGA result shows that the extruded composites are thermally more stable than their neat counterparts. The crystalline nature of CNTs and of as-fabricated composites were identified by X-ray diffraction (XRD) studies. The XRD results indicate that the nanocomposite materials are more crystalline than the neat systems, and the differential scanning calorimetry studies also confirmed the same trend. The scanning electron microscopy result showed that the sizes of extruded neat and nanophased filaments were about 117 and 73 μm, respectively. Tensile coupons from the consolidated panels were then extracted both in longitudinal (0°) and in transverse (90°) directions and tested in a Minimat Tester. It was found that with the addition of 2% by weight of CNTs in LLDPE, the tensile strength and modulus of the composite has increased by about 34 and 38%, respectively. The (0°) and (90°) coupons have also demonstrated that there are directional effects in the tensile response, which is believed to have been caused by the alignment of CNTs during the extrusion process. It is our understanding that such improvement in properties is because of the increase in crystallinity of the polymer due to CNT infusion, and also due to the alignment of CNTs in the extrusion direction in the nanocomposites. Details of the fabrication procedures, synthesis of composites, and mechanical testing are included in the paper.

Multi-walled Carbon Nanotubes Penetrate into Plant Cells and Affect the Growth of Onobrychis arenaria Seedlings

Acta Naturae ◽  
2011 ◽  
Vol 3 (1) ◽  
pp. 99-106 ◽  
Author(s):  
E A Smirnova ◽  
A A Gusev ◽  
O N Zaitseva ◽  
E M Lazareva ◽  
G E Onishchenko ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Plant Cells ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes
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