scholarly journals Tailoring the dispersion of multiwall carbon nanotubes in co-continuous PVDF/ABS blends to design materials with enhanced electromagnetic interference shielding

2015 ◽  
Vol 3 (15) ◽  
pp. 7974-7985 ◽  
Author(s):  
Goutam Prasanna Kar ◽  
Sourav Biswas ◽  
Rani Rohini ◽  
Suryasarathi Bose
Keyword(s):  
Carbon Nanotubes ◽  
Electromagnetic Interference ◽  
Multiwall Carbon Nanotubes ◽  
Electromagnetic Interference Shielding ◽  
Design Materials ◽  
Multiwall Carbon ◽  
Conducting Composites

Highly conducting composites were derived by selectively localizing multiwall carbon nanotubes (MWNTs) in co-continuous PVDF/ABS (50/50, wt/wt) blends.

A strategy to achieve enhanced electromagnetic interference shielding at ultra-low concentration of multiwall carbon nanotubes in PαMSAN/PMMA blends in the presence of a random copolymer PS-r-PMMA

RSC Advances ◽  
2016 ◽  
Vol 6 (32) ◽  
pp. 26959-26966 ◽  
Author(s):  
Suryasarathi Bose ◽  
Maya Sharma ◽  
Avanish Bharati ◽  
Paula Moldenaers ◽  
Ruth Cardinaels
Keyword(s):  
Carbon Nanotubes ◽  
Electromagnetic Interference ◽  
Multiwall Carbon Nanotubes ◽  
Random Copolymer ◽  
Shielding Effectiveness ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding ◽  
Emi Shielding Effectiveness ◽  
Pmma Blends ◽  
Multiwall Carbon

Mediated by the PS-r-PMMA, the MWNTs were mostly localized at the interface and bridged the PMMA droplets. This strategy led to enhance EMI shielding effectiveness at 0.25 wt% MWNTs through multiple scattering from MWNT covered droplets.

Electromagnetic interference shielding through MWNT grafted Fe3O4 nanoparticles in PC/SAN blends

2015 ◽  
Vol 3 (2) ◽  
pp. 656-669 ◽  
Author(s):  
Shital Patangrao Pawar ◽  
Dhruva A. Marathe ◽  
K. Pattabhi ◽  
Suryasarathi Bose
Keyword(s):  
Carbon Nanotubes ◽  
Iron Oxide ◽  
Fe3o4 Nanoparticles ◽  
Electromagnetic Interference ◽  
Multiwall Carbon Nanotubes ◽  
Electromagnetic Interference Shielding ◽  
Multiwall Carbon

In this study, multiwall carbon nanotubes (MWNTs) were chemically grafted onto dopamine anchored iron oxide (Fe3O4) nanoparticles via diazotization reaction to design electromagnetic (EM) shielding materials based on PC (polycarbonate)/SAN [poly (styrene-co-acrylonitrile)] blends.

Electromagnetic Interference Shielding and Mechanical Properties of Maleic Anhydride Functionalized MWNT and Poly (urea urethane) Nanocomposites

2007 ◽  
Vol 334-335 ◽  
pp. 789-792
Author(s):  
Han Lang Wu ◽  
Chen Chi M. Ma ◽  
Chung Hao Wang
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Maleic Acid ◽  
Electromagnetic Interference ◽  
Radical Reaction ◽  
Multiwall Carbon Nanotubes ◽  
Free Radical Reaction ◽  
Electromagnetic Interference Shielding ◽  
Multiwall Carbon ◽  
Functionalized Multiwall Carbon Nanotubes

The functionalized multiwall carbon nanotubes (MWNTs) have been prepared by free radical reaction with maleic acid and maleic anhydride. The functionalized MWNT was further blended with poly(dimethylsiloxane) (PDMS) based Poly(urea-urethane) (PUU). Both maleic acid modified MWNT (Maa-g-MWNT) and maleic anhydride modified MWNT (Mah-g-MWNT) showed enhanced dispersion compared with that of pristine MWNT and PUU.For MWNT/PUU nanocomposites containing 5 phr functionalized MWNT, the maximum microwave absorption was -19.2 dB for Maa-g-MWNT/PUU nanocomposites and was -22 dB for Mah-g-MWNT/PUU nanocomposites.

Electromagnetic interference shielding and mechanical properties of multi-layered polyvinyl chloride/multiwall carbon nanotubes nanocomposite

2019 ◽  
Vol 9 (8) ◽  
pp. 872-881
Author(s):  
Abdullah Aljaafari ◽  
Sobhy S. Ibrahim
Keyword(s):  
Carbon Nanotubes ◽  
Polyvinyl Chloride ◽  
Electromagnetic Interference ◽  
Multiwall Carbon Nanotubes ◽  
Complex Viscosity ◽  
Weight Percent ◽  
Mechanical Analysis ◽  
Double Layers ◽  
Multiwall Carbon ◽  
Layered Samples

Electromagnetic shielding is one of the promising research areas that attract the interest of many researchers, especially researchers interested in polymer nanocomposite. In this work, the shielding efficiency and dynamic mechanical analysis for multi-layered samples are reviewed and analyzed. The multi-layered samples were prepared using two sheets of polyvinyl chloride (PVC) polymer loaded with multiwall carbon nanotubes over the electrical percolation threshold, and a MWCNTs buckypaper (MWCNTs BP) sheet between them. The three sheets were collected together by hot-press technique to form a multi-layered nanocomposite sample. The shielding efficiency of single and double layers of PVC/MWCNTs sheets loaded by 5 wt.% MWCNTs, was very weak. The new structured (3 layered/multilayered) nanocomposite samples were prepared with different weight percent of MWCNTs BP sheet (0, 1, 2, 3 and 4 wt.%). The SE values over all the frequency range (450 MHz to about 2.0 GHz) are strongly depends on the weight percent of the MWCNTs BP. Shielding efficiency increased as the MWCNTs BP weight percent increased. Decreases the elastic modulus, storage modulus and the coefficient of complex viscosity were found for a new set of samples contains 0.14, 0.27, 0.28 and 0.44 wt.% MWCNTs BP layers. This is due to the diffused MWCNTs from the mesh to polymer layers making the composite more brittle. The glass transition temperature determined from tanδ(f) increased as MWCNTs BP content increases.

Boehmite Nanofibers as a Dispersant for Nanotubes in an Aqueous Sol

2018 ◽  
Author(s):  
Gen Hayase
Keyword(s):  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
Aqueous Solutions ◽  
High Aspect Ratio ◽  
Multiwall Carbon Nanotubes ◽  
Multiwall Carbon ◽  
Nanotube Films

By exploiting the dispersibility and rigidity of boehmite nanofibers (BNFs) with a high aspect ratio of 4 nm in diameter and several micrometers in length, multiwall-carbon nanotubes (MWCNTs) were successfully dispersed in aqueous solutions. In these sols, the MWCNTs were dispersed at a ratio of about 5–8% relative to BNFs. Self-standing BNF–nanotube films were also obtained by filtering these dispersions and showing their functionality. These films can be expected to be applied to sensing materials.

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