Synthesis and characterization of polyvinyl alcohol based multiwalled carbon nanotube nanocomposites

Malikov, Elvin Y.; Muradov, M. B.; Akperov, O.G.; Eyvazova, Goncha M.; Puskás, Róbert; Madarász, Dániel; Nagy, László; Kukovecz, Ákos; Kónya, Zoltán

doi:10.1016/j.physe.2014.03.026

Cited by 68 publications

(41 citation statements)

References 29 publications

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“…Most of the absorption bands of the CNTs are identical to those of the pCNTs. The CO stretching of the carboxylic groups present in the CNTs appears at 1717 cm −1 . Upon phosphonation, this band shifts to 1638 cm −1 due to the formation of the amide bond between the phosphonating agent and the COOH groups in the CNTs .…”

Section: Resultsmentioning

confidence: 99%

Influence of carboxylated and phosphonated single‐walled carbon nanotubes on the transport properties of sulfonated poly(styrene‐isobutylene‐styrene) membranes

Ruiz-Colón

Pérez‐Pérez

Suleiman

2018

J. Polym. Sci. Part A: Polym. Chem.

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This study discusses the effect of carboxylated (COOH) and phosphonated (PO3H2) single‐walled carbon nanotubes (SWCNTs) on the transport properties of sulfonated poly(styrene‐isobutylene‐styrene) (SO3H SIBS) as polymer nanocomposite membranes (PNMs) for direct methanol fuel cell (DMFC) and chemical and biological protective clothing (CBPC) applications. The properties were determined as a function of sulfonation level of SIBS, SWCNTs functionalization and loading. A comprehensive materials characterization study was performed to understand the interactions between the nanofillers and the functionalized polymer matrix, and to determine the effect of their incorporation on the resulting nanostructure of the PNMs. Results indicate that the sulfonation level is the variable that dictates nanofiller dispersion, mechanical properties, water absorption capabilities, morphology, and oxidative stability of SO3H SIBS. Meanwhile, the nanofiller loading and functionalization influenced the transport properties. The nanofillers reduced methanol permeation. PO3H2 SWCNTs increased the proton conductivity but at a high sulfonation level (i.e., 90 mol %), the ionic interconnectivity caused a more complex morphology decreasing the transport of protons. Optimal selectivity in transport properties were found with a sulfonation level of 61 mol % and a PO3H2 SWCNTs loading of 1.0 wt. % for DMFC and 0.5 wt. % for CBPC due to changes in morphology and the unique transport mechanism of permeants through the PNMs. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018, 56, 2475–2495

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Section: Resultsmentioning

confidence: 99%

Influence of carboxylated and phosphonated single‐walled carbon nanotubes on the transport properties of sulfonated poly(styrene‐isobutylene‐styrene) membranes

Ruiz-Colón

Pérez‐Pérez

Suleiman

2018

J. Polym. Sci. Part A: Polym. Chem.

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“…The PVDF thin film are prepared from casting a gel-like solution of PVDF in a mixture with methyl ethyl ketone (MEK) and allowed to dry followed by pressing the precursor material to release stress when achieving large diameter PVDF thin films [7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

Section: Making Large Pvdf Thin Filmsmentioning

confidence: 99%

“…Moreover, in this study, we have included measurements on commercial and doped PVA films, with either MWCNT or Ag-nanoparticles as dopants [10,11].…”

Section: Introductionmentioning

confidence: 99%

Surface resistivity temperature dependence measures of commercial, multiwall carbon nanotubes (MWCNT), or silver nano-particle doped polyvinylidene difluoride (PVDF) and polyvinyl alcohol (PVA) films

et al. 2014

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The detection of infrared radiation (IR) with pure and doped Polyvinylidene difluoride (PVDF) films has been well documented using the mechanism of pyroelectricity. Alternatively, the electrical properties of films made from Polyvinyl Alcohol (PVA) have received considerable attention in recent years. The investigation of surface resistivities of both such films, to this point, has received far less consideration in comparison to pyroelectric effects. In this research, we report temperature dependent surface resistivity measurements of commercial, and of multiwall carbon nanotubes (MWCNT), or Ag-nanoparticle doped PVA films. Without any variation in the temperature range from 22°C to 40°C with controlled humidity, we found that the surface resistivity decreases initially, reaches a minimum, but rises steadily as the temperature continues to increase. This research was conducted with the combined instrumentation of the Keithley Model 6517 Electrometer and Keithley Model 8009 resistivity test fixture using both commercial and in-house produced organic thin films. With the objective to quantify the suitability of PVDF and PVA films as IR detector materials, when using the surface resistivity phenomenon, instead of or in addition to the pyroelectricity, surface resistivity measurements are reported when considering bolometry. We find the surface resistivity of PVDF films to be in the range, which extends beyond the upper limit of our Keithley electrometer, but our measurements on PVA films were readily implemented.

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“…Polymer grafted multiwall carbon nanotubes (MWCNTs) are the most appropriate matrix for CdS nanocrystal synthesis [36]. The MWCNTs used as reinforcement consist of layers of hexagonal graphene sheets rolled into seamless cylinders forming coaxial layers [37].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of CdS nanoparticle based multiwall carbon nanotube–maleic anhydride–1-octene nanocomposites

Malikov

Altay

Muradov

et al. 2015

Physica E: Low-dimensional Systems and Nanostructures

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Synthesis and characterization of polyvinyl alcohol based multiwalled carbon nanotube nanocomposites

Cited by 68 publications

References 29 publications

Influence of carboxylated and phosphonated single‐walled carbon nanotubes on the transport properties of sulfonated poly(styrene‐isobutylene‐styrene) membranes

Influence of carboxylated and phosphonated single‐walled carbon nanotubes on the transport properties of sulfonated poly(styrene‐isobutylene‐styrene) membranes

Surface resistivity temperature dependence measures of commercial, multiwall carbon nanotubes (MWCNT), or silver nano-particle doped polyvinylidene difluoride (PVDF) and polyvinyl alcohol (PVA) films

Synthesis and characterization of CdS nanoparticle based multiwall carbon nanotube–maleic anhydride–1-octene nanocomposites

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