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Electrical Conductive Polymer Nanocomposites
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Electrical Conductive Polymer Nanocomposites

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

Deadline for manuscript submissions: closed (10 April 2022) | Viewed by 6917

Special Issue Editor

Dr. Zdenek Stary

E-Mail Website
Guest Editor
Polymer Processing Department, Institute of Macromolecular Chemistry, Heyrovského nám. 1888/2, 162 00 Praha 6-Břevnov, Prague, Czech Republic
Interests: polymer composites and blends; rheology; structure–properties relationships

Special Issue Information

Dear Colleagues,

Electrically conductive polymer composites are materials drawing a significant scientific attention in recent decades. These heterogeneous systems consisting of an insulating polymer matrix and a conductive filler are used in large-scale applications such as antistatic packaging and electromagnetic shielding. Today, the application spectrum of conductive polymer composites broadens because they are considered as perspective materials for the production of sensors in biomedicine, smart textiles or radiation protection. To obtain electrically conductive material, filler particles have to form a continuous network in a polymer matrix. However, the presence of this network impairs the processability of the composites significantly. For this reason and because of the usually high cost of conductive nanofillers, a large number of studies have been devoted to the preparation of composites with the lowest possible percolation threshold, for example, using fillers with high aspect ratios or ensuring selective localization of filler particles in polymer matrices. At low filler contents, particle structures are very fragile, however, and can be destroyed easily by applying external stress, which can be advantageous for sensors but limiting for other applications. Therefore, fundamental understanding of relationships between structure of conductive particle networks including mechanisms of their formation and behavior of conductive polymer composites is necessary for the creation of new materials with final properties tailored to the needs of specific application.

It is my great pleasure to serve as a guest editor of this Special Issue, which aims to catch recent advances and trends in the field of electrically conductive polymer composites. Original research articles and reviews covering the preparation, characterization, and application of these smart multifunctional materials are welcome.

Dr. Zdenek Stary
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

  • nanocomposites
  • electrical conductivity
  • percolation threshold
  • electromagnetic shielding
  • antistatic materials
  • sensing

Published Papers (3 papers)

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Research

16 pages, 4817 KiB  
Article
Joule-Heating Effect of Thin Films with Carbon-Based Nanomaterials
by Usha Kiran Sanivada, Dina Esteves, Luisa M. Arruda, Carla A. Silva, Inês P. Moreira and Raul Fangueiro
Materials 2022, 15(12), 4323; https://doi.org/10.3390/ma15124323 - 18 Jun 2022
Cited by 14 | Viewed by 2607
Abstract
Smart textiles have become a promising area of research for heating applications. Coatings with nanomaterials allow the introduction of different functionalities, enabling doped textiles to be used in sensing and heating applications. These coatings were made on a piece of woven cotton fabric [...] Read more.
Smart textiles have become a promising area of research for heating applications. Coatings with nanomaterials allow the introduction of different functionalities, enabling doped textiles to be used in sensing and heating applications. These coatings were made on a piece of woven cotton fabric through screen printing, with a different number of layers. To prepare the paste, nanomaterials such as graphene nanoplatelets (GNPs) and multiwall carbon nanotubes (CNTs) were added to a polyurethane-based polymeric resin, in various concentrations. The electrical conductivity of the obtained samples was measured and the heat-dissipating capabilities assessed. The results showed that coatings have induced electrical conductivity and heating capabilities. The highest electrical conductivity of (9.39 ± 1.28 × 10−1 S/m) and (9.02 ± 6.62 × 10−2 S/m) was observed for 12% (w/v) GNPs and 5% (w/v) (CNTs + GNPs), respectively. The sample with 5% (w/v) (CNTs + GNPs) and 12% (w/v) GNPs exhibited a Joule effect when a voltage of 12 V was applied for 5 min, and a maximum temperature of 42.7 °C and 40.4 °C were achieved, respectively. It can be concluded that higher concentrations of GNPs can be replaced by adding CNTs, still achieving nearly the same performance. These coated textiles can potentially find applications in the area of heating, sensing, and biomedical applications. Full article
(This article belongs to the Special Issue Electrical Conductive Polymer Nanocomposites)
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14 pages, 9977 KiB  
Article
Interface Strengthening of PS/aPA Polymer Blend Nanocomposites via In Situ Compatibilization: Enhancement of Electrical and Rheological Properties
by Lilian Azubuike and Uttandaraman Sundararaj
Materials 2021, 14(17), 4813; https://doi.org/10.3390/ma14174813 - 25 Aug 2021
Cited by 4 | Viewed by 2303
Abstract
The process of strengthening interfaces in polymer blend nanocomposites (PBNs) has been studied extensively, however a corresponding significant enhancement in the electrical and rheological properties is not always achieved. In this work, we exploit the chemical reaction between polystyrene maleic anhydride and the [...] Read more.
The process of strengthening interfaces in polymer blend nanocomposites (PBNs) has been studied extensively, however a corresponding significant enhancement in the electrical and rheological properties is not always achieved. In this work, we exploit the chemical reaction between polystyrene maleic anhydride and the amine group in nylon (polyamide) to achieve an in-situ compatibilization during melt processing. Herein, nanocomposites were made by systematically adding polystyrene maleic anhydride (PSMA) at different compositions (1–10 vol%) in a two-step mixing sequence to a Polystyrene (PS)/Polyamide (aPA) blend with constant composition ratio of 25:75 (PS + PSMA:aPA) and 1.5 vol% carbon nanotube (CNT) loading. The order of addition of the individual components was varied in two-step mixing procedure to investigate the effect of mixing order on morphology and consequently, on the final properties. The electrical and rheological properties of these multiphase nanocomposite materials were investigated. The optical microscope images show that for PS/aPA systems, CNTs preferred the matrix phase aPA, which is the thermodynamically favorable phase according to the wettability parameter calculated using Young’s equation. However, aPA’s great affinity for CNT adversely influenced the electrical properties of our blend. Adding PSMA to PS/aPA changed the structure of the droplet phase significantly. At 1.5 vol% CNT, a more regular and even distribution of the droplet domains was observed, and this produced a better framework to create more CNT networks in the matrix, resulting in a higher conductivity. For example, with only 1.5 vol% CNT in the PBN, at 3 vol% PSMA, the conductivity was 7.4 × 10−2 S/m, which was three and a half orders of magnitude higher than that seen for non-reactive PS/aPA/CNT PBN. The mechanism for the enhanced conductive network formation is delineated and the improved rheological properties due to the interfacial reaction is presented. Full article
(This article belongs to the Special Issue Electrical Conductive Polymer Nanocomposites)
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13 pages, 2182 KiB  
Article
Mechanical and Electrical Performance of Flexible Polymer Film Designed for a Textile Electrically-Conductive Path
by Agnieszka Tabaczyńska, Anna Dąbrowska, Marcin Masłowski and Anna Strąkowska
Materials 2021, 14(9), 2169; https://doi.org/10.3390/ma14092169 - 23 Apr 2021
Cited by 2 | Viewed by 1486
Abstract
Electro-conductive paths that are mechanically resistant and stable during simulated aging cycles are promising, in relation to the non-invasive application in e-textiles in our everyday surroundings. In the paper, an analysis of the influence of electro-conductive filler, as well as ionic liquid on [...] Read more.
Electro-conductive paths that are mechanically resistant and stable during simulated aging cycles are promising, in relation to the non-invasive application in e-textiles in our everyday surroundings. In the paper, an analysis of the influence of electro-conductive filler, as well as ionic liquid on surface resistance is provided. Authors proved that depending on the tested variant, obtained surface resistance may vary from 50 kΩ (when 50 phr of Ag and [bmim][PF6] ionic liquid applied) to 26 GΩ (when 25 phr of Ag and [bmim][PF6] ionic liquid applied). The samples were also evaluated after simulated aging cycles and the stability of electric properties was confirmed. Moreover, it was proved that the addition of ionic liquids reduced the resistance of vulcanizates, while no significant influence of the extrusion process on conductivity was observed. Full article
(This article belongs to the Special Issue Electrical Conductive Polymer Nanocomposites)
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