A strategy to achieve high electromagnetic interference shielding and ultra low percolation in multiwall carbon nanotube–polycarbonate composites through selective localization of carbon nanotubes

Maiti, Suman; Suin, Supratim; Shrivastava, Nilesh K.; Khatua, Bhanu Bhusan

doi:10.1039/c3ra46480f

Cited by 86 publications

(47 citation statements)

References 45 publications

(41 reference statements)

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“…SE A occurs when incident radiations interact with electric and magnetic dipoles present within the shield Shielding effectiveness due to multiple internal reflection of the EM wave at various interfaces (SE M ) and can be considered as scattering effect of in‐homogeneity within the shielding material …”

Section: Resultsmentioning

confidence: 99%

Multiwalled carbon nanotubes reinforced poly (ether‐ketone) nanocomposites: Assessment of rheological, mechanical, and electromagnetic shielding properties

Chauhan

Verma

et al. 2017

Polymers for Advanced Techs

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This study investigates the effect of multiwalled carbon nanotubes (MWCNTs) content on rheological, mechanical, and EMI shielding properties in Ka band (26.5-40 GHz) of poly (ether-ketone) [PEK] prepared by melt compounding using twin screw extruder. Transmission electron microscopy (TEM) and field emission gun scanning electron microscopy (FEG-SEM) studies were adopted to identify dispersion of nanotubes in PEK matrix. TEM and SEM images showed uniform dispersion of MWCNTs in PEK/MWCNT composites even at loading of 5 wt%. The rheological studies showed that the material experiences viscous (fluid) to elastic (solid) transition at 1 wt% loading beyond which nanotubes form continuous network throughout the matrix which The purpose of this study is to examine the rheological, mechanical, and EMI shielding properties of PEK/CNT composites prepared by melt extrusion. The transition from viscous to elastic behavior was examined through the study of storage modulus, loss modulus, complex viscosity, damping factor, and phase angle (Van-Gurp Palmen plot)at different angular frequencies. Mechanical properties were studied by investigating the effect of multiwalled carbon nanotube (MWCNT) content on flexural strength and flexural modulus. Further EMI

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Section: Resultsmentioning

confidence: 99%

Multiwalled carbon nanotubes reinforced poly (ether‐ketone) nanocomposites: Assessment of rheological, mechanical, and electromagnetic shielding properties

Chauhan

Verma

et al. 2017

Polymers for Advanced Techs

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“…This behavior possibly may be due to the reason that the conductive path can be made more easily when the domain size is decreased and, as a result, the MWCNT can be dispersed more evenly. A strategy to achieve high EMI shielding and ultralow percolation in PC/MWCNT nanocomposites through selective localization of CNTs was presented by Maiti et al The PC/MWCNT nanocomposites were prepared through solution blending of PC and MWCNT in the presence of commercial PC beads. The variation in EC of nanocomposites with different amounts (0%‐70%) of PC beads at constant MWCNT loading (0.05 and 0.10 wt%) was observed.…”

Section: Pc/cnt Nanocompositesmentioning

confidence: 99%

A review on the mechanical, electrical and EMI shielding properties of carbon nanotubes and graphene reinforced polycarbonate nanocomposites

Bagotia

Choudhary

Sharma

2018

Polymers for Advanced Techs

111

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Recently, it has been found that carbon nanotubes (CNTs) and graphene could prove to be the most promising carbonaceous fillers in polymers nanocomposites field because of their better structural and functional properties. Their uniform dispersion in polymer matrix leads to significant improvements in their several properties. This paper reviews the effect of nanofillers, ie, CNTs, derivatized CNTs, and graphene on the polycarbonate nanocomposite and its application in aerospace, automobile, sports, electronic sectors, and various industries. The comparative analysis of carbon‐based fillers on the different properties of polycarbonate nanocomposites is also included.

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“…Such as Eswaraiah et al 9 have prepared functionalized graphene (f-G)/polyvinylidene fluoride foam composite through a solution-blending technique. The reported EMI SE value of the composite was 20 dB in the X-band (8)(9)(10)(11)(12) GHz) region when composite was prepared with 5 wt% loading of f-G in foam composite. Hsiao et al 10 have studied the EMI SE of sulfonated functional groups containing waterborne polyurethane/ graphene oxide (GO) nanocomposite and achieved high EMI SE value (34 dB) at 20 wt% GO loading in the X-band region.…”

Section: Introductionmentioning

confidence: 97%

“…They have also reported EMI SE value of PC/CNT nanocomposite. 12 The composite has been prepared by the solution blending method in the presence of PC bead. The obtained EMI SE value was 23.1 dB at 2 wt% CNT loading in the presence of 70 wt% PC bead.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Performance of PVC/CNT Nanocomposite

Wang

Tang

et al. 2016

Adv Polym Technol

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ABSTRACT:The PVC/CNT nanocomposite was prepared with commercial poly(vinyl chloride) (PVC) beads and multiwall carbon nanotube (CNT). The comparative values of the electromagnetic interference shielding effectiveness (EMI SE) and electrical conductivity of PVC/CNT nanocomposite in the presence and absence of PVC beads were described. The results showed that the EMI SE values and electrical conductivity values of PVC/CNT nanocomposite had increased compared to those without PVC beads. After the addition of PVC beads, both values of the EMI SE and electrical conductivity had also increased with the increasing of the amount of PVC bead on the PVC/CNT nanocomposite, and the PVC/CNT nanocomposite in the presence of PVC bead showed high EMI SE value (22.6 dB at 4.0 wt% CNT loading in the presence of 70 wt% bead) and high conductivity value (5.31×10−2 S cm −1 at 1.0 wt% CNT loading in the presence of 70 wt% bead) at low CNT loading. Thus, PVC beads effectively play a major role in enhancing the EMI SE value and electrical conductivity value of the nanocomposite. To check the bead region and solvent-dried CNT region in the nanocomposite, morphological studies have been done and morphological studies of the PVC/CNT nanocomposite supported the two-phase regions in the composite and the selective dispersion of the CNT in the solvent-dried phase has been clearly observed.

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A strategy to achieve high electromagnetic interference shielding and ultra low percolation in multiwall carbon nanotube–polycarbonate composites through selective localization of carbon nanotubes

Cited by 86 publications

References 45 publications

Multiwalled carbon nanotubes reinforced poly (ether‐ketone) nanocomposites: Assessment of rheological, mechanical, and electromagnetic shielding properties

Multiwalled carbon nanotubes reinforced poly (ether‐ketone) nanocomposites: Assessment of rheological, mechanical, and electromagnetic shielding properties

A review on the mechanical, electrical and EMI shielding properties of carbon nanotubes and graphene reinforced polycarbonate nanocomposites

Preparation and Performance of PVC/CNT Nanocomposite

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