Improved Electrical Conductivity of Carbon/Polyvinyl Alcohol Electrospun Nanofibers

Shehata, Nader; Madi, N.K.; Al-Maadeed, Somaya; Hassounah, Ibrahim; Ashraf, Abdullah Al

doi:10.1155/2015/812481

Cited by 10 publications

(7 citation statements)

References 19 publications

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“…However, the reinforcement of graphene into the PVA matrix had no significant change in crystallinity [27]. Thus, the increase of Young's modulus of PVA/PAMPS/GO (Figure 8) can be explained by the increase of the interfacial interactions between the GOs into the PVA/PAMPS matrix.…”

Section: Resultsmentioning

confidence: 95%

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Green Route Fabrication of Graphene Oxide Reinforced Polymer Composites with Enhanced Mechanical Properties

Mahendran

Sridharan

Santhakumar

et al. 2016

Journal of Nanoscience

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A facile and “Green” route has been applied to fabricate graphene oxide (GO) reinforced polymer composites utilizing “deionized water” as solvent. The GO was reinforced into water soluble poly(vinyl alcohol) (PVA) and poly-2-acrylamido-2-methyl-1-propanesulfonic acid (PAMPS) matrix by ultrasonication followed by mechanical stirring. The incorporation and dispersion of the GO in the polymer matrix were analyzed by XRD, FE-SEM, AFM, FT-IR, and TGA. Further, the FE-SEM and AFM images revealed that the surface roughness and agglomeration of the GO in the polymer matrix increased by increasing its concentration. Ionic exchange capacity, proton conductivity, and tensile texture results showed that the reinforcement of GO in the polymer matrix enhances the physicochemical properties of the host polymer. These PVA/PAMPS/GO nanocomposites showed improved mechanical stability compared to the pristine polymer, because of strong interfacial interactions within the components and homogeneous dispersion of the GO sheets in the PVA/PAMPS matrix.

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Section: Resultsmentioning

confidence: 95%

“…In the PVA spectrum, two major mass losses were identified. The first weight loss around 100-150 ∘ C due to moisture loss and the second weight loss around 250-350 ∘ C correspond to the thermal degradation of PVA [27]. In the TGA curve of GO, two major mass losses at about 100 ∘ C and 200-250 ∘ C were observed.…”

Section: Resultsmentioning

confidence: 97%

Green Route Fabrication of Graphene Oxide Reinforced Polymer Composites with Enhanced Mechanical Properties

Mahendran

Sridharan

Santhakumar

et al. 2016

Journal of Nanoscience

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“…In electrospinning, the (nano)fibers are formed under the influence of a high applied voltage, where the polymer melt or solution is driven from a metallic needle (spinneret) to a metallic collector under the flow rate and high voltage . Researchers investigating the electrospinning of PVDF found the ideal PVDF concentration to be between 10 and 20 wt %, depending on the solvent used and the polymer molecular weight.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the physico‐mechanical properties of electrospun PVDF/cellulose (nano)fibers

Issa

Al-Maadeed

Luyt

et al. 2016

J of Applied Polymer Sci

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The electro‐activity and mechanical properties of PVDF depends mainly on the β‐phase content and degree of crystallinity. In this study, cellulose fibers were used to improve these characteristics. This could be achieved because the hydroxyl groups on cellulose would force the fluorine atoms in PVDF to be in the trans‐conformation, and the cellulose particles could act as nucleation centers. Electrospinning was used to prepare the PVDF/cellulose (nano)fibrous films, and this improved the total crystallinity and the formation of β‐crystals. However, the presence and amount of cellulose in PVDF were found to have little influence on the β‐phase content and on the total crystallinity of PVDF. Improvements in the extent of crystallinity and the β‐phase content were primarily brought about by the chain‐ and crystal orientation as a result of electrospinning. The thermal stability of PVDF in the composites slightly increased with increasing cellulose content in the composites up to 1.0 wt %, while the modulus and tensile strength significantly increased up to the same filler level. The dielectric storage permittivity also increased with increasing cellulose content, but the presence of cellulose had no influence on the dynamics of the γ‐ and β‐relaxations of the PVDF. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43594.

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“…The various forms and allotropes of carbon, such as carbon nanotubes [1], carbon fibre [2], graphite [3,4], graphene [5], and graphene oxide, have attracted many researchers due to their exceptional physical and mechanical properties, such as high electrical conductivity and good thermal stability. This combination of superior properties with the simplicity of production of graphene-based materials is important in different applications such as electronic industry and sensors [6].…”

Section: Introductionmentioning

confidence: 99%

Optimization and Prediction of Mechanical and Thermal Properties of Graphene/LLDPE Nanocomposites by Using Artificial Neural Networks

Khanam

AlMaadeed

et al. 2016

International Journal of Polymer Science

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The focus of this work is to develop the knowledge of prediction of the physical and chemical properties of processed linear low density polyethylene (LLDPE)/graphene nanoplatelets composites. Composites made from LLDPE reinforced with 1, 2, 4, 6, 8, and 10 wt% grade C graphene nanoplatelets (C-GNP) were processed in a twin screw extruder with three different screw speeds and feeder speeds (50, 100, and 150 rpm). These applied conditions are used to optimize the following properties: thermal conductivity, crystallization temperature, degradation temperature, and tensile strength while prediction of these properties was done through artificial neural network (ANN). The three first properties increased with increase in both screw speed and C-GNP content. The tensile strength reached a maximum value at 4 wt% C-GNP and a speed of 150 rpm as this represented the optimum condition for the stress transfer through the amorphous chains of the matrix to the C-GNP. ANN can be confidently used as a tool to predict the above material properties before investing in development programs and actual manufacturing, thus significantly saving money, time, and effort.

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Improved Electrical Conductivity of Carbon/Polyvinyl Alcohol Electrospun Nanofibers

Cited by 10 publications

References 19 publications

Green Route Fabrication of Graphene Oxide Reinforced Polymer Composites with Enhanced Mechanical Properties

Green Route Fabrication of Graphene Oxide Reinforced Polymer Composites with Enhanced Mechanical Properties

Investigation of the physico‐mechanical properties of electrospun PVDF/cellulose (nano)fibers

Optimization and Prediction of Mechanical and Thermal Properties of Graphene/LLDPE Nanocomposites by Using Artificial Neural Networks

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