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Special Issue "Graphene-based Polymer Composites"

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

Deadline for manuscript submissions: closed (31 October 2014)

Special Issue Editor

Guest Editor
Prof. Dr. Joong Hee Lee (Website)

Department of BIN Fusion Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, Korea
Fax: +82 63 270 2341
Interests: synthesis of nanomaterials; fabrication of nanocomposites; functional materials and composites; functionalization of graphene and its composites; membranes for fuel cells; biosensors and bioelectronics

Special Issue Information

Dear Colleagues,

The Special Issue on “Graphene-based Polymer Composites” aims to provide a forum for the publication of original research/review articles concerning graphene-filled polymer composites. The scope of the special issue encompasses all types of graphene-filled polymeric composites (e.g., rubbers, plastics, conducting polymers, bio-polymers, adhesives, etc.). The issue covers all branches and aspects of novel processing techniques, testing methods, and standards, along with their applications, to meet product development demands.

Authors may highlight the novel surface modifications of graphene that produce composites; they may discuss the preparation of graphene-based filler materials or the composites’ applications. However, this Special Issue mainly concentrates on investigating the superior, physicochemical properties of the composites (as compared with conventional materials). Authors are encouraged to submit their original works highlighting the applications of the composites in various areas, such as in electronics, energy storage, automobiles, aerospace engineering, infrastructure, recreational products, and in any other functional materials.

Prof. Dr. Joong Hee Lee
Guest Editor

Submission

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. Papers will be published continuously (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as 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 refereed through a peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers 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 1400 CHF (Swiss Francs).


Keywords

  • graphene
  • surface modification
  • polymers
  • composites
  • mechanical properties
  • thermal properties
  • morphology

Published Papers (3 papers)

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Research

Open AccessArticle Study on the Effect of Silanization and Improvement in the Tensile Behavior of Graphene-Chitosan-Composite
Polymers 2015, 7(3), 527-551; doi:10.3390/polym7030527
Received: 14 November 2014 / Revised: 23 February 2015 / Accepted: 5 March 2015 / Published: 13 March 2015
Cited by 1 | PDF Full-text (7013 KB) | HTML Full-text | XML Full-text
Abstract
In the present study, silane-functionalized graphene (f-graphene)-reinforced chitosan nanocomposite films exhibiting enhanced mechanical properties have been prepared by the solution casting method. These nanocomposite films were characterized by X-ray diffraction, Raman spectroscopy and thermogravimetric analysis. In order to investigate the effect of [...] Read more.
In the present study, silane-functionalized graphene (f-graphene)-reinforced chitosan nanocomposite films exhibiting enhanced mechanical properties have been prepared by the solution casting method. These nanocomposite films were characterized by X-ray diffraction, Raman spectroscopy and thermogravimetric analysis. In order to investigate the effect of silane functionalization, tensile tests were performed on original, oxidized and silane-functionalized graphene-reinforced chitosan nanocomposite films. Tensile results show that silane functionalization groups offer a substantial increase in the interfacial adhesion between filler and host matrix. This result is also confirmed by the surface morphology of the fracture surface in scanning electron microscope analysis. Qualitative analysis using Raman and Fourier transform infrared spectroscopy revealed the existence of Si–O–Si and Si–O–C bonds in the silanized composite. Thermal analysis of the samples shows that the material is stable up till 250 °C and maintains its thermal stability all throughout the process until it starts degrading after 510 °C. Atomic force microscopy reveals that the material is well exfoliated after the oxidation of graphene and also displays the existence of 3–6 layers of exfoliated graphene sheets. X-ray photoelectron spectroscopy studies also reveal the existence of silicon in the single state and quantify the sample to be approximately around 4% (±0.5%) of the total atomic weight. Full article
(This article belongs to the Special Issue Graphene-based Polymer Composites)
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Open AccessArticle Structural and Dynamical Properties of Polyethylene/Graphene Nanocomposites through Molecular Dynamics Simulations
Polymers 2015, 7(3), 390-417; doi:10.3390/polym7030390
Received: 28 November 2014 / Accepted: 9 February 2015 / Published: 23 February 2015
Cited by 15 | PDF Full-text (1350 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Detailed atomistic (united atoms) molecular dynamics simulations of several graphene based polymer (polyethylene, PE) nanocomposite systems have been performed. Systems with graphene sheets of different sizes have been simulated at the same graphene concentration (~3%). In addition, a periodic graphene layer (“infinite [...] Read more.
Detailed atomistic (united atoms) molecular dynamics simulations of several graphene based polymer (polyethylene, PE) nanocomposite systems have been performed. Systems with graphene sheets of different sizes have been simulated at the same graphene concentration (~3%). In addition, a periodic graphene layer (“infinite sheet”) has been studied. Results concerning structural and dynamical properties of PE chains are presented for the various systems and compared to data from a corresponding bulk system. The final properties of the material are the result of a complex effect of the graphene’s sheet size, mobility and fluctuations. A detailed investigation of density, structure and dynamics of the hybrid systems has been conducted. Particular emphasis has been given in spatial heterogeneities due to the PE/graphene interfaces, which were studied through a detailed analysis based on radial distances form the graphene’s center-of-mass. Chain segmental dynamics is found to be slower, compared to the bulk one, at the PE/graphene interface by a factor of 5 to 10. Furthermore, an analysis on the graphene sheets characteristics is presented in terms of conformational properties (i.e., wrinkling) and mobility. Full article
(This article belongs to the Special Issue Graphene-based Polymer Composites)
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Open AccessArticle Effects of Graphene Nanoplatelets and Reduced Graphene Oxide on Poly(lactic acid) and Plasticized Poly(lactic acid): A Comparative Study
Polymers 2014, 6(8), 2232-2246; doi:10.3390/polym6082232
Received: 13 June 2014 / Revised: 24 July 2014 / Accepted: 25 July 2014 / Published: 21 August 2014
Cited by 7 | PDF Full-text (4689 KB) | HTML Full-text | XML Full-text
Abstract
The superlative mechanical properties of graphene-based materials make them the ideal filler materials for polymer composites reinforcement. Two types of graphene-based materials, graphene nanoplatelets (xGnP) and reduced graphene oxide (rGO), were used as nanofiller in poly(lactic acid) (PLA) polymer matrix, as well [...] Read more.
The superlative mechanical properties of graphene-based materials make them the ideal filler materials for polymer composites reinforcement. Two types of graphene-based materials, graphene nanoplatelets (xGnP) and reduced graphene oxide (rGO), were used as nanofiller in poly(lactic acid) (PLA) polymer matrix, as well as plasticized PLA. The addition of rGO into PLA or plasticized PLA substantially enhanced the tensile strength without deteriorating elasticity, compared to xGnP nanocomposites. In addition, the investigation of the thermal properties has found that the presence of rGO in the system is very beneficial for improving thermal stability of the PLA or plasticized PLA. Scanning electron microscope (SEM) images of the rGO nanocomposites display homogenous and good uniformity morphology. Transmission electron microscopy (TEM) images revealed that the rGO remained intact as graphene sheet layers and were dispersed well into the polymer matrix, and it was confirmed by X-ray diffraction (XRD) results, which shows no graphitic peak in the XRD pattern. Full article
(This article belongs to the Special Issue Graphene-based Polymer Composites)
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