Enhanced physical properties of poly(vinyl alcohol)-based single-walled carbon nanotube nanocomposites through ozone treatment of single-walled carbon nanotubes

Al-Hawarin, Jibril; Ayesh, Ayman S; Yasin, Essam

doi:10.1177/0731684413493529

Cited by 9 publications

(8 citation statements)

References 43 publications

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“…The results are similar with CNTs and graphene filled PVA composites. Hawarin et al 2 reported that the conductivity of ozone treated single-walled carbon nanotubes (SWCNTs)/PVA composite is 2.5 Â 10 À6 S/cm, and the conductivity of untreated SWCNTs/PVA composite is 5 Â 10 À8 S/cm for 1 wt% SWCNTs. Hu et al 22 reported that the conductivity of electrochemically modified graphite nanosheets reinforced PVA is 10 À7 S/cm for 6 wt% graphene.…”

Section: Results and Discussion Conductivitymentioning

confidence: 99%

The effect of bio-carbon addition on the electrical, mechanical, and thermal properties of polyvinyl alcohol/biochar composites

Nan

DeVallance

Xie

et al. 2015

Journal of Composite Materials

123

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The composites of polyvinyl alcohol and bio-carbon (i.e. biochar) were prepared by a solution casting method to investigate their electrical conductivity and mechanical and thermal properties. The polyvinyl alcohol/biochar composites filled with 2 wt% and 10 wt% biochar exhibit a similar electrical conductivity to most carbon nanotube and graphene reinforced polyvinyl alcohol composites. Results of mechanical tests indicate that addition of the biochar reduced the tensile strength of the polyvinyl alcohol/biochar composites. However, the tensile modulus and storage modulus above the glass transition temperature were improved through the addition of biochar. The results of thermal gravimetric analysis and differential scanning calorimetry indicated that addition of biochar increased the thermal decomposition temperature of polyvinyl alcohol/biochar composites. These results demonstrate that biochar holds great potential for replacing the carbon nanotubes and graphene as a filler of polymers in electrical applications.

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Section: Results and Discussion Conductivitymentioning

confidence: 99%

The effect of bio-carbon addition on the electrical, mechanical, and thermal properties of polyvinyl alcohol/biochar composites

Nan

DeVallance

Xie

et al. 2015

Journal of Composite Materials

123

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“…There are many methods proposed by many research studies to solve such a problem, such as chemical treatments, exposing to ultraviolet (UV)–ozone, ultrasonication, and adsorption with aromatic compounds. 1 –3,16 –25…”

Section: Introductionmentioning

confidence: 99%

“…15 Besides, several research works have demonstrated that the addition of an optimum amount of nanofiller such as CNTs greatly enhances the electrical conductivity of nanocomposites. 1 –8,12 –14,16 –25…”

Section: Introductionmentioning

confidence: 99%

Dielectric relaxation behavior of three-phase MWCNTs-PANI polystyrene nanocomposites

Farrag

2018

Journal of Thermoplastic Composite Materials

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Polymer nanocomposites consisting of multiwalled carbon nanotubes (MWCNTs), polyaniline (PANI), and polystyrene (PS) were prepared at different MWCNT weight ratios and fixed amount of PANI (0.2 wt%). Impedance, dielectric constant, dielectric loss, and electrical conductivity for these composites were investigated as a function of applied field and MWCNTs content at room temperature. Obtained results indicated that adding 0.2 wt% PANI polymer to MWCNTs-PS system will enhance electrical conductivity and polar character while reduce the percolation threshold from 0.8% to 0.2% MWCNTs of nanocomposites. Relaxation behavior of prepared nanocomposites showed interesting results. In general, impedance results showed that all samples contain capacitor and resistor elements. Increasing of MWCNTs amount will reduce the distance between CNTs–CNTs in the CNTs–polymer network, and the resistor element become more pronounced. Moreover, at high level of MWCNTs content the relaxation behavior is mostly due to conductivity relaxation with single value of relaxation time. The addition of PANI (0.2% PANI) to CNT–polymer or CNT–CNT networks will introduce easy pathway for carriers to transfer through network leading to increase the electrical conduction for composites. Relaxation results indicated that the relaxation behavior of prepared nanocomposite is mostly due to conductivity relaxation above 0.2 wt% nanocomposite.

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“…The results are similar with CNTs and graphene filled PVA composites. Hawarin et al (2013) reported that the conductivity of ozone treated single-walled carbon nanotubes (SWCNTs)/PVA composite was 2.5×10 -6 S/cm, and the conductivity of untreated SWCNTs/PVA composite was 5×10 -8 S/cm for 1wt% SWCNTs. Hu et al (2010) reported that the conductivity of electrochemically modified graphite nano-sheets reinforced PVA was 10 -7 S/cm for 6wt% graphene.…”

Section: Electrical Conductivity Of Pva/biochar Composite Filmsmentioning

confidence: 99%

“…CNTs and graphene have been recognized as excellent fillers for the production of polymer composites with enhanced tensile properties, thermal stability, and electrical properties. The electrical properties of carbon-based polymer composites provides the potential for use in sensors, capacitors, batteries, and many other electrical applications(Castell et al 2013;Hawarin et al 2013; Kuilla et al 2010;.The piezoresistive effect is a phenomenon where the electrical resistance of an ECPC material changes as external pressure is applied to the material). Due to their excellent electrical, mechanical, and thermal properties, carbon-based ECPC materials have been considered as promising candidates for piezoresistive pressure sensors applied in robotic skin applications(Lacasse et al 2010; Wang and Ye 2013), medical health…”

mentioning

confidence: 99%

Development of polyvinyl alcoholwood-derived carbon thin films: Influence of processing parameters on mechanical, thermal, and electrical properties

Nan¹

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The first goal of this research was to explore the potential value of hardwood-derived carbon materials as fillers for reinforcing polymer materials, and investigate the effect of filler content on various properties of reinforced composites. Three loading levels of biochar particles, 2wt%, 6wt%, and 10wt% (by weight) were added to a 10wt% polyvinyl alcohol (PVA) solution (by weight) and composites were formed via the film-casting method. The morphological, tensile, thermal, and dynamic mechanical properties of PVA/biochar composite films were tested and analyzed. Tensile tests indicated that the addition of biochar iv ACKNOWLEDGMENTS I would first like to thank my major professor Dr. David DeVallance for providing me with this great opportunity and the guidance he provided throughout my time at West Virginia University. I am very grateful to have had the pleasure of studying and working under him. I would also like to thank my committee members: Dr.

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Enhanced physical properties of poly(vinyl alcohol)-based single-walled carbon nanotube nanocomposites through ozone treatment of single-walled carbon nanotubes

Cited by 9 publications

References 43 publications

The effect of bio-carbon addition on the electrical, mechanical, and thermal properties of polyvinyl alcohol/biochar composites

The effect of bio-carbon addition on the electrical, mechanical, and thermal properties of polyvinyl alcohol/biochar composites

Dielectric relaxation behavior of three-phase MWCNTs-PANI polystyrene nanocomposites

Development of polyvinyl alcoholwood-derived carbon thin films: Influence of processing parameters on mechanical, thermal, and electrical properties

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