Preparation and physical characterization of SWCNTs-polycarbonate nanocomposites

Ayesh, Ayman S

doi:10.1007/s10965-012-0027-y

Cited by 18 publications

(31 citation statements)

References 55 publications

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“…As can be seen, the current level in these composites increases with the addition of MWCNTs especially above 1% MWCNTs. Such a trend also was observed previously in SWCNTs-PC [31][32] and MWCNTs-PS [33] composites. Figure 9 shows the room temperature DC conductivity of MWCNTs-PS composites as a function of the weight fraction of MWCNTs in the neat PS.…”

Section: Dispersion Behavior Of Mwcnts In Polystyrene Solutions and Fsupporting

confidence: 89%

“…This unique phenomenon also sheds a light on the fact that in our system, the solvent evaporation does not alter the dispersion, which is otherwise common during experimentation. [31][32][33] ELECTRICAL PROPERTIES (DC APPLIED FIELD) Figure 8 shows the current (I)-voltage (v) characteristic curves for the pretreated MWCNTs-PS composites with different MWCNT weight ratios at room temperature. As can be seen, the current level in these composites increases with the addition of MWCNTs especially above 1% MWCNTs.…”

Section: Dispersion Behavior Of Mwcnts In Polystyrene Solutions and Fmentioning

confidence: 99%

“…[31][32][33] Generally, electrical conductivity of CNTs-polymer composites depends on the polymer layer in the inter-nanotube connections, which presents highly resistive section in the electrical pathway, acting as a barrier to efficient carrier transport between the nanotubes. It is not necessary that CNTs get in touch with each other-CNTs may just be closed to each other with enough distance to allow electrons hop or tunnel through barriers; these mechanisms require the CNT-CNT distance to be less than 5 nm.…”

Section: Dispersion Behavior Of Mwcnts In Polystyrene Solutions and Fmentioning

confidence: 99%

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Novel Dispersion of MWCNTs in Polystyrene Polymer Induced by the Addition of 3-Hydroxy-2-Napthoic Acid

Abdel‐Rahem

Ayesh

Ibrahim

et al. 2015

Journal of Dispersion Science and Technology

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This article reports an extensive investigation of the unique dispersion behavior of solutions with multi-walled carbon nanotubes (MWCNTs) and 3-hydroxy-2-napthoic acid (b-HNA) in tetrahydrofuran (THF) solvent, which results into a multifold enhancement in the electrical properties of polystyrene (PS). A number of solutions with 0.4% of MWCNTs (w/v) and b-HNA (0-1%, w/v) in THF were prepared separately. MWCNTs precipitated out in THF solvent shortly after the preparation and formed two distinct phase regions (2/). Gratifyingly, addition of b-HNA solution to the MWCNTs solution offered an unprecedented enhancement in the dispersion of MWCNTs. Such dispersion in solutions with only 0.02% b-HNA (w/v) was found to be stable up to 2 weeks at room temperature. FTIR spectroscopy was incorporated to illustrate the adsorption of b-HNA onto the surface of carbon nanotubes (CNTs). After this successful dispersion, nanocomposites solutions comprising of 0.067% b-HNA (w/v), 6.7% PS (w/v), and varying concentrations of MWCNTs (0-0.33%, w/v) were prepared. A remarkable dispersion behavior of MWCNTs in the presence of polymer was also observed. Finally, thin films made up of consistent polystyrene/b-HNA concentrations and increasing amounts of MWCNTs were prepared by casting technique to investigate the influence of dispersion on the electrical properties of the film. The dispersion significantly affected the DC electrical conductivity and incorporation of 5% MWCNTs elevated the electrical conductivity up to 10 orders of magnitude with respect to neat PS.

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Section: Dispersion Behavior Of Mwcnts In Polystyrene Solutions and Fsupporting

confidence: 89%

Section: Dispersion Behavior Of Mwcnts In Polystyrene Solutions and Fmentioning

confidence: 99%

Section: Dispersion Behavior Of Mwcnts In Polystyrene Solutions and Fmentioning

confidence: 99%

See 1 more Smart Citation

Novel Dispersion of MWCNTs in Polystyrene Polymer Induced by the Addition of 3-Hydroxy-2-Napthoic Acid

Abdel‐Rahem

Ayesh

Ibrahim

et al. 2015

Journal of Dispersion Science and Technology

Self Cite

View full text Add to dashboard Cite

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“…It was interpreted that P3HT‐ g ‐PCL with lower degree of polymerization in P3HT backbone is more effective for homogeneous dispersion of MWCNTs in PC matrix than that with higher degree of polymerization in P3HT because of the stronger π‐π interaction between P3HT‐ g ‐PCLs and MWCNTs. Single‐walled CNTs were functionalized with COOH, OH group, meso ‐tritolylcorrole, UV‐ozone, etc for their better and homogeneous dispersion in PC matrix . Plasma‐modified CNTs were also used for PC/CNT nanocomposite production because these modified CNTs show better macrodispersion and good adhesion with PC matrix .…”

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

112

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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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“…Since their discovery by Iijima in 1991, carbon nanotubes (CNTs) have received much attention because of their extraordinary mechanical, thermal, and electrical properties . The incorporation of small amounts of CNTs with high aspect ratios in polymeric matrices has brought about a new class of electrically conducting composite materials in which CNT networks form conducting paths .…”

Section: Introductionmentioning

confidence: 99%

Conducting polymerized high‐internal‐phase emulsion/single‐walled carbon nanotube nanocomposite foams: Effect of the aqueous‐phase surfactant type on the morphology and conductivity

Karimian

Moghbeli

2016

J of Applied Polymer Sci

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Poly(styrene‐co‐divinylbenzene)/single‐walled carbon nanotubes (SWCNTs) polymerized high‐internal‐phase emulsion (polyHIPE) nanocomposite foams were successfully synthesized with various types of aqueous‐phase surfactants. The effects of anionic, cationic, nonionic, and mixed surfactants on the morphology and electrical conductivity of the resulting nanocomposite foams were investigated. The use of an anionic surfactant, sodium dodecylbenzesulfonate (SDBS), did not completely result in the typical polyHIPE nanocomposite foam microstructure because of the partial instability of the high‐internal‐phase emulsion. The nanocomposite foams synthesized by nonionic surfactants, that is, Pluronic F127 and Triton X‐100, and the cationic/anionic mixture, cetyltrimethylammonium bromide/SDBS, exhibited the proper morphology, but the resulting nanocomposite foams were electrically insulators. Interestingly, the use of a Gemini‐like surfactant, sodium dioctylsulfosuccinate (SDOSS), significantly improved both the typical morphology and electrical properties of the resulting nanocomposite foams because of the probable stronger interactions of SDOSS molecules with SWCNTs. The typical morphology of the nanocomposite foam synthesized with the SDOSS/F127 mixed surfactant was significantly improved, but the electrical conductivity decreased to some extent compared with the SDOSS‐synthesized nanocomposite foams. This behavior was attributed to an increase in the tunneling length of the electrons between adjacent SWCNTs. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43883.

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Preparation and physical characterization of SWCNTs-polycarbonate nanocomposites

Cited by 18 publications

References 55 publications

Novel Dispersion of MWCNTs in Polystyrene Polymer Induced by the Addition of 3-Hydroxy-2-Napthoic Acid

Novel Dispersion of MWCNTs in Polystyrene Polymer Induced by the Addition of 3-Hydroxy-2-Napthoic Acid

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

Conducting polymerized high‐internal‐phase emulsion/single‐walled carbon nanotube nanocomposite foams: Effect of the aqueous‐phase surfactant type on the morphology and conductivity

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