Special Issue "Applications of Graphene and Fullerene Nanocomposites"

A special issue of Polymers (ISSN 2073-4360).

Deadline for manuscript submissions: closed (20 February 2019)

Special Issue Editor

Guest Editor
Prof. Dr. Fawad Inam

University of East London, Department of Engineering and Computing, London, United Kingdom
Website | E-Mail
Interests: design engineering smart materials; nanotechnology; nanocomposites; materials and manufacturing

Special Issue Information

Dear Colleagues,

A significant rise in the number of innovative applications and devices related to advanced carbon-polymer composites (micro, nano and hybrids) is currently being experienced. Fullerenes are the novel forms of super carbonaceous materials consisting of hollow molecular cages, balls or tubes of strongly bonded carbon atoms. Over the past two decades, they are subject of significant and impactful research for their utilization in an increasing number of applications like petrochemical, energy, biomedical, automotive, aerospace, defence, sporting goods and infrastructure development. In particular, carbon nanotubes and graphene are being intensively explored as they impart unique combinations of superlative chemical, physical and mechanical properties, when mixed with thermoplastic and thermoset polymers and their composites (i.e. multi-scale hybrids). Such composites have already proven their extraordinary characteristics both for structural, as well as functional applications. 

This Special Issue will focus on the preparation, development and application of various fullerene-filled polymers. The open access issue intends to cover the radical step-change in the capabilities and application of carbon-polymer composites (micro, nano and hybrids), brought about by advances in fullerenes and the related hybridization/ composite processing technologies. Original articles and reviews are welcome. However, research articles, which include practical experimental results and critical theory, are particularly encouraged, as are papers, which set fullerene-filled polymers in the wider context of, for example, society, economics, energy and environment.

Prof. Dr. Fawad Inam
Guest Editor

Manuscript Submission Information

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Keywords

  • Carbon nanotubes-polymer composites
  • Fullerene-polymer composites
  • Graphene-polymer composites
  • Mechanical properties
  • Smart materials and devices
  • Functional materials
  • Electrical properties
  • Engineering applications
  • Biomedical applications

Published Papers (4 papers)

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Research

Open AccessArticle Preparation of Xylan-g-/P(AA-co-AM)/GO Nanocomposite Hydrogel and its Adsorption for Heavy Metal Ions
Polymers 2019, 11(4), 621; https://doi.org/10.3390/polym11040621
Received: 23 February 2019 / Revised: 25 March 2019 / Accepted: 29 March 2019 / Published: 4 April 2019
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Abstract
Xylan-g-/P(AA-co-AM)/Graphene oxide (GO) hydrogels were prepared and used in the removal of heavy mental ions. Acrylamide (AM), acrylic acid (AA), and xylan were used as the raw materials to prepare the hydrogels with ammonium persulfate (APS) as the initiator. [...] Read more.
Xylan-g-/P(AA-co-AM)/Graphene oxide (GO) hydrogels were prepared and used in the removal of heavy mental ions. Acrylamide (AM), acrylic acid (AA), and xylan were used as the raw materials to prepare the hydrogels with ammonium persulfate (APS) as the initiator. The prepared hydrogels were characterized by Fourier transform infrared (FTIR), thermogravimetric analysis (TGA), and energy dispersive X-ray (EDX). Some important properties of nanocomposite hydrogels such as swelling behavior, mechanical property, and adsorption capacity were also examined as well as the regeneration of the hydrogels. The results showed that the prepared hydrogels reached the equilibrium state of swelling after 12 h, and the compressive strength of the hydrogel with 30 mg of GO could reach up to 203 kPa. Compared with traditional hydrogel, the mechanical properties of the hydrogels with GO were obviously improved. The maximum adsorption capacity of hydrogels for Pb2+, Cd2+, and Zn2+ could reach up to 683 mg/g, 281 mg/g, and 135 mg/g, respectively. After five cycles of adsorption and desorption, the recovery rate of the hydrogels on Pb2+, Cd2+, and Zn2+ was still up to 87%, 80%, and 80%, respectively—all above 80%. Full article
(This article belongs to the Special Issue Applications of Graphene and Fullerene Nanocomposites)
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Open AccessArticle High-Performance PEDOT:PSS/Hexamethylene Diisocyanate-Functionalized Graphene Oxide Nanocomposites: Preparation and Properties
Polymers 2018, 10(10), 1169; https://doi.org/10.3390/polym10101169
Received: 20 September 2018 / Revised: 17 October 2018 / Accepted: 17 October 2018 / Published: 20 October 2018
Cited by 1 | PDF Full-text (11329 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Graphene oxide (GO) has emerged as an ideal filler to reinforce polymeric matrices owing to its large specific surface area, transparency, flexibility, and very high mechanical strength. Nonetheless, functionalization is required to improve its solubility in common solvents and expand its practical uses. [...] Read more.
Graphene oxide (GO) has emerged as an ideal filler to reinforce polymeric matrices owing to its large specific surface area, transparency, flexibility, and very high mechanical strength. Nonetheless, functionalization is required to improve its solubility in common solvents and expand its practical uses. In this work, hexamethylene diisocyanate (HDI)-functionalized GO (HDI-GO) has been used as filler of a conductive polymer matrix, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). The nanocomposites have been prepared via a simple solution casting method, and have been characterized by scanning electron microscopy (SEM), UV–Vis and Raman spectroscopies, X-ray diffraction (XRD), thermogravimetric analysis (TGA), tensile tests, and four-point probe measurements to get information about how the HDI-GO functionalization degree (FD) and the HDI-GO concentration in the nanocomposite influence the final properties. SEM analysis showed a very homogenous dispersion of the HDI-GO nanosheets with the highest FD within the matrix, and the Raman spectra revealed the existence of very strong HDI-GO-PEDOT:PSS interactions. A gradual improvement in thermal stability was found with increasing HDI-GO concentration, with only a small loss in transparency. A reduction in the sheet resistance of PEDOT:PSS was found at low HDI-GO contents, whilst increasing moderately at the highest loading tested. The nanocomposites showed a good combination of stiffness, strength, ductility, and toughness. The optimum balance of properties was attained for samples incorporating 2 and 5 wt % HDI-GO with the highest FD. These solution-processed nanocomposites show considerably improved performance compared to conventional PEDOT:PSS nanocomposites filled with raw GO, and are highly suitable for applications in various fields, including flexible electronics, thermoelectric devices, and solar energy applications. Full article
(This article belongs to the Special Issue Applications of Graphene and Fullerene Nanocomposites)
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Open AccessArticle Effect of Graphene Nano-Additives on the Local Mechanical Behavior of Derived Polymer Nanocomposites
Polymers 2018, 10(6), 667; https://doi.org/10.3390/polym10060667
Received: 24 March 2018 / Revised: 25 May 2018 / Accepted: 12 June 2018 / Published: 15 June 2018
Cited by 1 | PDF Full-text (8430 KB) | HTML Full-text | XML Full-text
Abstract
In this study, indentation tests of graphene-based polymer nanocomposites were carried out to determine the local elastic mechanical properties. The samples consist of epoxy matrix with graphene additives. Additives were added at levels of 0% as a control, 0.5%, 1%, 2.5%, 5% and [...] Read more.
In this study, indentation tests of graphene-based polymer nanocomposites were carried out to determine the local elastic mechanical properties. The samples consist of epoxy matrix with graphene additives. Additives were added at levels of 0% as a control, 0.5%, 1%, 2.5%, 5% and 10% by weight. The local elastic properties such as moduli and hardness were calculated. After each indentation, the prints were characterized using scanning electron microscopy (SEM). It seems that the local mechanical properties of nanocomposite samples were improved as the amount of nano-additives increased. Based on the curve displacement and surface imaging, we can conclude that the nano-additives influenced the overall plastic mechanical behavior of the samples. For simulating micro-indentation test, a finite element analysis model was developed using ABAQUS software and compared to experimental tests. Good correlation was observed. Full article
(This article belongs to the Special Issue Applications of Graphene and Fullerene Nanocomposites)
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Open AccessArticle Mechanical Properties and Wear Resistance of Sulfonated Graphene/Waterborne Polyurethane Composites Prepared by In Situ Method
Polymers 2018, 10(1), 75; https://doi.org/10.3390/polym10010075
Received: 14 November 2017 / Revised: 8 January 2018 / Accepted: 10 January 2018 / Published: 15 January 2018
Cited by 1 | PDF Full-text (11746 KB) | HTML Full-text | XML Full-text
Abstract
In order to improve the dispensability of graphene oxide (GO) in waterborne polyurethane (WPU), sulfonated graphene (SGO) with superior dispersity was prepared by modifying graphene oxide with sodium 2-chloroethane sulfonate to introduce hydrophilic sulfonic groups into the structure. SGO/WPU composites were prepared using [...] Read more.
In order to improve the dispensability of graphene oxide (GO) in waterborne polyurethane (WPU), sulfonated graphene (SGO) with superior dispersity was prepared by modifying graphene oxide with sodium 2-chloroethane sulfonate to introduce hydrophilic sulfonic groups into the structure. SGO/WPU composites were prepared using isophorone diisocyanate (IPDI), polytetramethylene ether glycol (PTMEG 2000), dimethylolpropionic acid (DMPA) and SGO as raw materials. The influence of SGO content on composite properties were investigated. The structure and morphology of SGO and SGO/WPU composites were characterized by infrared spectroscopy, X-ray diffractometry and transmission electron microscopy etc. Their mechanical properties and wear resistance were analyzed as well. The experimental results showed that SGO was successfully grafted onto polyurethane macromolecule by an in situ method and, with the introduction of sulfonic groups, the interfacial compatibility of GO and PU was improved significantly so that SGO evenly dispersed into WPU. The SGO that was grafted onto WPU macromolecules exhibited layered morphology with nanometers in the WPU matrix. With increasing SGO content, the tensile strength and the wear resistance of the film increased, but the addition of more than 0.8 wt % SGO yielded unfavorable results. When the added amount of SGO was 0.8 wt % of WPU, the tensile strength of the composite film was 46.53% higher than that of the blank group, and the wear resistance of the film was remarkably improved, which was due to a strong interaction between the SGO and WPU phases. Thus, the conclusion can be drawn that appropriate amount of SGO addition can enhance the mechanical properties of SGO/WPU composite film. Full article
(This article belongs to the Special Issue Applications of Graphene and Fullerene Nanocomposites)
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Graphical abstract

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