Preparation and characterization of nanofibers of polyvinyl alcohol/polyaniline-montmorillonite clay

Silva, Dáfenes B.R. dos S.; Júnior, Lindembergue Pereira Costa; Aguiar, Maurício F. de; Melo, Celso P. de; Alves, Kleber G.B.

doi:10.1016/j.molliq.2018.10.087

Cited by 21 publications

(6 citation statements)

References 66 publications

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“…The organophilization of the MMT was successful after being detected by XRD and FTIR, at (001) plane displacement from 5.6° to 4.7° and absorption bands in 2924 cm −1 , 2853 cm −1 , and 1479 cm −1. 71 The organophilization was made because to improve the compatibility of MMT with the polymer (PVA) since organic clay has lower surface energy. By practicing electrospinning technique, the organophilization permitted the interlamellar spaces of MMT to increased and hence able to intercalate subsequently into the polymer chains.…”

Section: Properties Of Carbon Nanotube Graphene Oxide and Montmorillmentioning

confidence: 99%

“…Diffractogram of (A) MMT and (B) O‐MMT followed by FTIR spectra of (A) MMT, (b) O‐MMT, (C) pristine PANI, and (D) PANI/OMMT nanocomposite, UV–Vis spectra of (A) pristine PANI, (B) PANI/OMMT and Nyquist plot of PVA/PANI‐OMMT nanofibers for exposure to methanol vapor 71 [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Properties Of Carbon Nanotube Graphene Oxide and Montmorillmentioning

confidence: 99%

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Carbon nanotube, graphene oxide and montmorillonite as conductive fillers in polymer electrolyte membrane for fuel cell: an overview

2020

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Summary This study discusses three conductive materials—carbon nanotube, graphene oxide, and montmorillonite which recently being used as fillers in membranes of fuel cell application and commonly hybridized with polymers as the matrix. The polymer electrolyte membrane fuel cell (PEMFC) is using a polymer‐based membrane as the electrolyte, which might require filler or functionalization to enhance their cell performance. This review provides brief information for the researcher who insists on improving the current PEM using these potential fillers, specified with required values of membrane properties measurement. It also entails the special features of the nanofillers concerning their chemical structure and electrochemical properties based on recent studies. As electricity is generated from an external fuel source, the membranes that are used should be more than 0.1 S/cm of proton conductivity, low fuel permeability (< 1.37 x 10−6 cm2/s), cheap, and high stability in dry and wet condition. PEM is widely being utilized together with filler(s) incorporated as a purpose to overcome recent drawbacks encountered by the commercial Nafion membrane solely. Hence, the fillers embedded in the membrane are necessarily to have the promising characteristics, acknowledging the potential performances of three conductive nanofillers of (a) carbon nanotubes which is well‐known of its electrical conducting potential with three cylindrical design, (b) graphene oxide which is a reactive carbonaceous material with its multifunctional groups and (c) montmorillonite which is one of the clay types that has tetrahedral and octahedral layers of alumina‐silicates for producing better hybrid polymer electrolyte membrane. Highlights Carbon nanotube, graphene oxide, and montmorillonite are highly promising conductive fillers with outstanding cell performances based on previous studies. Carbon nanotube, graphene oxide, and montmorillonite are chosen as incorporated fillers recently due to their rolling up direction (chirality vector of graphene sheet), reactive functional groups attached on the carbon atoms and ionic multilayers of the tetrahedral and octahedral sheet, respectively. High proton conductivity, low electronic conductivity, low fuel permeability, low water transport, low production cost, and high mechanical stability in both dry and wet condition are properties that should be portrayed by a good hybrid membrane.

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Section: Properties Of Carbon Nanotube Graphene Oxide and Montmorillmentioning

confidence: 99%

Section: Properties Of Carbon Nanotube Graphene Oxide and Montmorillmentioning

confidence: 99%

Carbon nanotube, graphene oxide and montmorillonite as conductive fillers in polymer electrolyte membrane for fuel cell: an overview

2020

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“…[19][20][21] It has been widely used in applications such as photocatalysis, batteries, sensors, and supercapacitors. [22][23][24] Zhou et al 25 have successfully synthesized g-C 3 N 4 and PANI modified titanium oxide nanotube arrays, and the results exhibite high visible-light photocatalytic ability for TetrabromobisphenolA. However, brittle PANI polymer is difficult to apply alone due to the conjugated structure and oligomer, compounding it with other materials has been a main trend for the rapid development of PANI.…”

Section: Introductionmentioning

confidence: 99%

Preparation of spunlaced viscose/PANI-ZnO/GO fiber membrane and its performance of photocatalytic decolorization

Liu

et al. 2022

Journal of Industrial Textiles

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In order to solve the increasingly serious problem of printing and dyeing wastewater pollution, a kind of novel, efficient, and reusable spunlaced viscose/polyaniline-ZnO/GO fibrous membrane was fabricated in this work. Specifically, spunlaced viscose/polyaniline conductive fibrous membrane was firstly prepared by in-situ growth method, followed with the growth of zinc oxide (ZnO) and graphene oxide (GO) via the hydrothermal route to obtain spunlaced viscose/PANI-ZnO/GO fibrous membrane (SV@PANI-ZnO/GO membrane). The results show that the decolorization rate of SV@PANI-ZnO/GO membrane for methylene blue (5.0 mg/L) was 97.4% within 120 min, and the decolorization rate remained above 76.7% after five cycles. Moreover, the reaction process conformed to a quasi-first order kinetic model with the apparent rate constant of 0.0209 min–1. Meanwhile, the free radical capture experiment revealed that the main reactive species in the decolorization process was .OH. This work may provide a new method for designing photocatalytic materials for environmental applications.

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“…14 Nanofibers have been successfully fabricated from the mixture of montmorillonite with polymers such as nylon-6, 15 PAN, 16 poly(vinyl alcohol), 17 polylactic acid, 18 PU, 12 and cellulose acetate 19 for different purposes. For example, Silva et al 20 have fabricated polyvinyl alcohol polyaniline-montmorillonite clay nanofibers for heavy metal filtration and as gas sensors.…”

Section: ■ Introductionmentioning

confidence: 99%

High-Porosity Polymer Composite for Removing Oil Spills in Cold Regions

et al. 2021

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In this work, polyvinyl chloride (PVC)/clay nanofiber composites with various contents were fabricated by the electrospinning process. The morphology, porosity, density, and mechanical properties of the nanofiber mats were investigated. In addition, PVC/clay nanofiber mats were characterized by Fourier transform infrared spectroscopy, differential scanning calorimetry, and thermogravimetric analysis. Moreover, the influence of the clay content in the nanofiber mats and its effect on oil sorption capacity were also evaluated. The results show that the clay particle diameter affects the fabrication, morphology, porosity, density, mechanical properties, and sorption capacity of the nanofiber mats. Adding clay in nanofiber composite materials leads to higher porosity and a higher oil sorption capacity. PVC/clay nanofiber mats have a high oil sorption capacity at low temperatures. They exhibit a high potential to be used as materials to eliminate oil spills under arctic conditions.

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Preparation and characterization of nanofibers of polyvinyl alcohol/polyaniline-montmorillonite clay

Cited by 21 publications

References 66 publications

Carbon nanotube, graphene oxide and montmorillonite as conductive fillers in polymer electrolyte membrane for fuel cell: an overview

Carbon nanotube, graphene oxide and montmorillonite as conductive fillers in polymer electrolyte membrane for fuel cell: an overview

Preparation of spunlaced viscose/PANI-ZnO/GO fiber membrane and its performance of photocatalytic decolorization

High-Porosity Polymer Composite for Removing Oil Spills in Cold Regions

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