Special Issue "Polymer Nanocomposites: Synthesis, Characterization and Applications"

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: 18 May 2021.

Special Issue Editor

Prof. Dr. Rosario Gerhardt
Website
Guest Editor
Georgia Institute of Technology, Atlanta, GA 30332-0245, United States
Interests: nanomaterial synthesis; nanocomposite fabrication; polymer composites; carbon nanotube films; ITO films; porosity effects; impedance and dielectric spectroscopy; small angle scattering; optical properties

Special Issue Information

Dear Colleagues,


Polymer composites have been at the forefront of science and technology in the last couple of decades because of advances in the synthesis and control of nanomaterial characteristics used as reinforcing or electroactive fillers. In this Special Issue, we aim to focus on the fabrication methods used to make the nanocomposites and their effect on the resultant properties. We are especially interested in research articles that focus on using the same starting materials so that a comparison between methods can be made and the effect of specific nanomaterials can be highlighted. We are also interested in articles that evaluate the effect of changing the structure of the matrix polymer and its effect on the composite properties while keeping the filler characteristics constant. Articles focused on demonstrating the sensitivity and accuracy of characterization methods and their analysis are desired, as are computer simulation methods that shed light on the trends seen in the properties of the nanocomposites. Finally, investigations that demonstrate the advantages of using a particular processing method to generate the desired properties for a specific application will also be welcome.


Prof. Dr. Rosario Gerhardt
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 papers will be 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. Nanomaterials is an international peer-reviewed open access monthly 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 2200 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

  • polymer matrix
  • nanomaterial filler
  • composite processing methods
  • mixing methods
  • consolidation methods
  • chemical structure
  • functionalization
  • surfactants
  • electrical properties
  • optical properties
  • magnetic properties
  • mechanical properties
  • thermal properties

Published Papers (2 papers)

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Research

Open AccessArticle
Aerogels Based on Reduced Graphene Oxide/Cellulose Composites: Preparation and Vapour Sensing Abilities
Nanomaterials 2020, 10(9), 1729; https://doi.org/10.3390/nano10091729 - 31 Aug 2020
Abstract
This paper reports on the preparation of cellulose/reduced graphene oxide (rGO) aerogels for use as chemical vapour sensors. Cellulose/rGO composite aerogels were prepared by dissolving cellulose and dispersing graphene oxide (GO) in aqueous NaOH/urea solution, followed by an in-situ reduction of GO to [...] Read more.
This paper reports on the preparation of cellulose/reduced graphene oxide (rGO) aerogels for use as chemical vapour sensors. Cellulose/rGO composite aerogels were prepared by dissolving cellulose and dispersing graphene oxide (GO) in aqueous NaOH/urea solution, followed by an in-situ reduction of GO to reduced GO (rGO) and lyophilisation. The vapour sensing properties of cellulose/rGO composite aerogels were investigated by measuring the change in electrical resistance during cyclic exposure to vapours with varying solubility parameters, namely water, methanol, ethanol, acetone, toluene, tetrahydrofuran (THF), and chloroform. The increase in resistance of aerogels on exposure to vapours is in the range of 7 to 40% with methanol giving the highest response. The sensing signal increases almost linearly with the vapour concentration, as tested for methanol. The resistance changes are caused by the destruction of the conductive filler network due to a combination of swelling of the cellulose matrix and adsorption of vapour molecules on the filler surfaces. This combined mechanism leads to an increased sensing response with increasing conductive filler content. Overall, fast reaction, good reproducibility, high sensitivity, and good differentiation ability between different vapours characterize the detection behaviour of the aerogels. Full article
(This article belongs to the Special Issue Polymer Nanocomposites: Synthesis, Characterization and Applications)
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Open AccessArticle
Non-Isothermal Crystallization Behavior and Thermal Properties of Polyethylene Tuned by Polypropylene and Reinforced with Reduced Graphene Oxide
Nanomaterials 2020, 10(8), 1428; https://doi.org/10.3390/nano10081428 - 22 Jul 2020
Abstract
This research work is the first to report thermal stability, heat deformation resistance, and crystallization behavior of a Polyethylene (PE)-based biphasic polyolefin system reinforced with Reduced Graphene Oxide (RGO), which was obtained through Graphene Oxide (GO) chemical reduction. Polypropylene (PP) represented the polymeric [...] Read more.
This research work is the first to report thermal stability, heat deformation resistance, and crystallization behavior of a Polyethylene (PE)-based biphasic polyolefin system reinforced with Reduced Graphene Oxide (RGO), which was obtained through Graphene Oxide (GO) chemical reduction. Polypropylene (PP) represented the polymeric dispersed phase. A strategic PE/PP/RGO manufacturing procedure was employed to thermodynamically localize RGO at the PE/PP interface, as confirmed by Transmission Electron Microscopy (TEM), bringing a uniform micro phase dispersion into the macro phase. In addition, studies of PE non-isothermal crystallization kinetics indicated that the morphology tunable micro phase and the nanolayered RGO promoted a nucleation-controlled PE crystallization, which was supported by Polarized Light Optical Microscopy (PLOM). This, together with fine morphology, justified the remarkable enhancement registered for the ternary system’s thermal stability and heat deformation resistance. Different filler loads were employed, with weight fractions of 2% and 4%. It was observed that the former, being better exfoliated and more homogeneously distributed at the PE/PP interface than the latter, led to a more improved PE crystallization, alongside a greater ternary system’s thermal properties. Moreover, the thermal stability of PE/PP reinforced with 2% of RGO was even higher than that of virgin PP, while their heat deformation resistance values were found to be similar. Therefore, this unique outcome provides industries, such as the energy and automotive sectors, with the opportunity to substitute PP-rich products with those mostly comprised of a cheaper, more abundant, yet performant PE. Full article
(This article belongs to the Special Issue Polymer Nanocomposites: Synthesis, Characterization and Applications)
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