Carbon Nanotube/Graphene Nanoribbon/Polyvinylidene Fluoride Hybrid Nanocomposites: Rheological and Dielectric Properties

2016 ◽  
Vol 121 (1) ◽  
pp. 169-181 ◽  
Author(s):  
Mohammad Arjmand ◽  
Soheil Sadeghi ◽  
Maryam Khajehpour ◽  
Uttandaraman Sundararaj
Keyword(s):  
Carbon Nanotube ◽  
Dielectric Properties ◽  
Polyvinylidene Fluoride ◽  
Graphene Nanoribbon ◽  
Hybrid Nanocomposites

Enhanced dielectric performance of polyvinylidene fluoride composites with an all-carbon hybrid architecture: vertically aligned carbon nanotube arrays on graphite nanoplatelets

2016 ◽  
Vol 4 (38) ◽  
pp. 8911-8919 ◽  
Author(s):  
Hang Zhao ◽  
Min-Hao Yang ◽  
Delong He ◽  
Jinbo Bai
Keyword(s):  
Carbon Nanotube ◽  
Dielectric Properties ◽  
Polyvinylidene Fluoride ◽  
Nanotube Arrays ◽  
Hybrid Architecture ◽  
Graphite Nanoplatelets ◽  
Carbon Nanotube Arrays ◽  
Dielectric Performance ◽  
Vertically Aligned

The dielectric properties of PVDF-based percolative composites can be strongly improved by loading novel conductive units with a well-designed micro-architecture.

scholarly journals Carbon Nanotube versus Graphene Nanoribbon: Impact of Nanofiller Geometry on Electromagnetic Interference Shielding of Polyvinylidene Fluoride Nanocomposites

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1064 ◽  
Author(s):  
Mohammad Arjmand ◽  
Soheil Sadeghi ◽  
Ivonne Otero Navas ◽  
Yalda Zamani Keteklahijani ◽  
Sara Dordanihaghighi ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Electromagnetic Interference ◽  
Polyvinylidene Fluoride ◽  
Network Formation ◽  
Molecular Simulations ◽  
Graphene Nanoribbon ◽  
Emi Shielding ◽  
Pvdf Matrix ◽  
The Impact

The similar molecular structure but different geometries of the carbon nanotube (CNT) and graphene nanoribbon (GNR) create a genuine opportunity to assess the impact of nanofiller geometry (tube vs. ribbon) on the electromagnetic interference (EMI) shielding of polymer nanocomposites. In this regard, GNR and its parent CNT were melt mixed with a polyvinylidene fluoride (PVDF) matrix using a miniature melt mixer at various nanofiller loadings, i.e., 0.3, 0.5, 1.0 and 2.0 wt%, and then compression molded. Molecular simulations showed that CNT would have a better interaction with the PVDF matrix in any configuration. Rheological results validated that CNTs feature a far stronger network (mechanical interlocking) than GNRs. Despite lower powder conductivity and a comparable dispersion state, it was interestingly observed that CNT nanocomposites indicated a highly superior electrical conductivity and EMI shielding at higher nanofiller loadings. For instance, at 2.0 wt%, CNT/PVDF nanocomposites showed an electrical conductivity of 0.77 S·m−1 and an EMI shielding effectiveness of 11.60 dB, which are eight orders of magnitude and twofold higher than their GNR counterparts, respectively. This observation was attributed to their superior conductive network formation and the interlocking ability of the tubular nanostructure to the ribbon-like nanostructure, verified by molecular simulations and rheological assays.

scholarly journals Designing BaTiO3/carbon nanotube core-shell hybrids to achieve polyvinylidene fluoride composites with high dielectric properties

2019 ◽  
Vol 6 (7) ◽  
pp. 075071 ◽  
Author(s):  
Benhui Fan ◽  
Mingyu Zhou ◽  
Chong Zhang ◽  
Yu Liu ◽  
Delong He ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Dielectric Properties ◽  
Polyvinylidene Fluoride ◽  
Core Shell ◽  
High Dielectric

Mechanics of Hybrid NanoComposites: The Carbon Nanotube/Graphene Effect into Failure Modes

2017 ◽  
Author(s):  
Suchilla Garcia Leão ◽  
Fernanda Luiza Rinco de Mendonça Lima ◽  
Marina Georgia Melo Martins ◽  
Nathalia Caroline Ferreira Menezes ◽  
Matheus Norton Mello ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Failure Modes ◽  
Hybrid Nanocomposites
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