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Recent Advances in Composites of Polymers with Graphene and Carbon Nanotubes

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Composites".

Deadline for manuscript submissions: closed (20 December 2023) | Viewed by 3286

Special Issue Editor


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Guest Editor
School of Computing Engineering and the Built Environment, Edinburgh Napier University, Edinburgh, UK
Interests: rheology; polymer nanocomposites; polymer blends

Special Issue Information

Dear Colleagues,

Graphene is a unique material, possessing extraordinary characteristics such as excellent electrical, thermal, and mechanical properties. Its remarkable strength and ability to carry charges make it an excellent candidate in various areas, from batteries and supercapacitors to water purification and membrane applications. Therefore, graphene offers an opportunity for manufacturers and researchers to explore innovative ideas and develop composites with both the lightweight and flexibility of polymers, as well as the outstanding characteristics of graphene and graphene-based materials. Some end-use polymer graphene composite applications could potentially be found electronic devices, semiconductors, and electromagnetic shielding materials, just to name a few. It has been shown, however, that the efficacy of the composites is proportional to the dispersion/distribution of graphene-based particles within the polymer matrix. Attempts have been undertaken to maximise graphene dispersion through either surface functionalization or polymer modification and blending to improve the graphene/polymer interactions. Yet, the full potential of these materials has not been fully realised. Therefore, this Special Issue intends to gather and disseminate recent findings relevant to the polymer graphene focus area. Topics of interest include, but are not limited to, processing, polymer/graphene compatibilization, innovative analytical tools for characterising polymer graphene composites, and the structure–property relationships of nanocomposites, with emphasis on mechanical, electrical, and thermal properties. Authors of numerical analyses and modeling research topics are also welcomed to submit their manuscripts.

Dr. Reza Salehiyan
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • graphene
  • polymer/graphene composites
  • nanocomposites
  • thermal conductivity
  • electrical properties
  • compatibilization
  • rheology

Published Papers (2 papers)

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Research

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13 pages, 4473 KiB  
Article
Knittle Pressure Sensor Based on Graphene/Polyvinylidene Fluoride Nanocomposite Coated on Polyester Fabric
by Surendra Maharjan, Victor K. Samoei, Ahalapitiya H. Jayatissa, Joo-Hyong Noh and Keiichiro Sano
Materials 2023, 16(22), 7087; https://doi.org/10.3390/ma16227087 - 8 Nov 2023
Cited by 1 | Viewed by 799
Abstract
In this paper, a knittle pressure sensor was designed and fabricated by coating graphene/Polyvinylidene Fluoride nanocomposite on the knitted polyester substrate. The coating was carried out by a dip-coating method in a nanocomposite solution. The microstructure, surface properties and electrical properties of coated [...] Read more.
In this paper, a knittle pressure sensor was designed and fabricated by coating graphene/Polyvinylidene Fluoride nanocomposite on the knitted polyester substrate. The coating was carried out by a dip-coating method in a nanocomposite solution. The microstructure, surface properties and electrical properties of coated layers were investigated. The sensors were tested under the application of different pressures, and the corresponding sensor signals were analyzed in terms of resistance change. It was observed that the change in resistance was 55% kPa−1 with a sensitivity limit of 0.25 kPa. The sensor model was created and simulated using COMSOL Multiphysics software, and the model data were favorably compared with the experimental results. This investigation suggests that graphene-based nanocomposites can be used in knittle pressure sensor applications. Full article
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Review

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45 pages, 8163 KiB  
Review
Recent Advances and Outlook in 2D Nanomaterial-Based Flame-Retardant PLA Materials
by Lesego Tabea Temane, Jonathan Tersur Orasugh and Suprakas Sinha Ray
Materials 2023, 16(17), 6046; https://doi.org/10.3390/ma16176046 - 2 Sep 2023
Cited by 3 | Viewed by 2012
Abstract
Poly (lactic acid) or polylactide (PLA) has gained widespread use in many industries and has become a commodity polymer. Its potential as a perfect replacement for petrochemically made plastics has been constrained by its extreme flammability and propensity to flow in a fire. [...] Read more.
Poly (lactic acid) or polylactide (PLA) has gained widespread use in many industries and has become a commodity polymer. Its potential as a perfect replacement for petrochemically made plastics has been constrained by its extreme flammability and propensity to flow in a fire. Traditional flame-retardants (FRs), such as organo-halogen chemicals, can be added to PLA without significantly affecting the material’s mechanical properties. However, the restricted usage of these substances causes them to bioaccumulate and endanger plants and animals. Research on PLA flame-retardants has mostly concentrated on organic and inorganic substances for the past few years. Meanwhile, there has been a significant increase in renewed interest in creating environmentally acceptable flame-retardants for PLA to maintain the integrity of the polymer, which is the current trend. This article reviews recent advancements in novel FRs for PLA. The emphasis is on two-dimensional (2D) nanosystems and the composites made from them that have been used to develop PLA nanocomposite (NCP) systems that are flame retarding. The association between FR loadings and efficiency for different FR-PLA systems is also briefly discussed in the paper, as well as their influence on processing and other material attributes. It is unmistakably established from the literature that adding 2D nanoparticles to PLA matrix systems reduces their flammability by forming an intumescent char/carbonized surface layer. This creates a barrier effect that successfully blocks the filtration of volatiles and oxygen, heat and mass transfer, and the release of combustible gases produced during combustion. Full article
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