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Polymers
Special Issues
Polymer/Bio-Carbon Composites: From Manufacturing to Applications
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Polymer/Bio-Carbon Composites: From Manufacturing to Applications

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Composites and Nanocomposites".

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 8392

Special Issue Editors

Dr. Donatella Duraccio

E-Mail Website
Guest Editor
National Research Council (CNR)-Institute of Sciences and Technologies for Sustainable Energy and Mobility (STEMS), Strada delle Cacce 73, 10135 Turin, Italy
Interests: polymer composites and nanocomposites; biopolymers; coatings; structure–property relationship; processing of polymers and biopolymers; polymer-based complex systems; food packaging; biomedical engineering
Special Issues, Collections and Topics in MDPI journals
Dr. Rossella Arrigo

E-Mail Website
Guest Editor
Politecnico di Torino, Department of Applied Science and Technology, Viale Teresa Michel 5, 15121 Alessandria, Italy
Interests: processing of polymers and biopolymers; polymer-based complex systems; polymer-based composites and nanocomposites; rheological behavior; structure-property relationships
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

It is well known that the demand for using polymer composites in various application areas is vast. This is because the combination of distinct materials with an interface separating the components is able to create properties that can not be achieved by any of the components acting alone. Polymer composites containing carbonaceous material is one of the most established practices in material science. However, carbon materials such as carbon nanotubes, graphene and graphene oxide have not yet fulfilled the promise of the new carbon era and, for these reasons, new profitable approaches have been explored for the integration of carbon production with waste management. In this contest, the production of carbonaceous material from the thermochemical conversion of biomasses is very promising and the bioderived carbon (known as bio-carbon, biochar) can be used for plenty of applications in all the field that are traditionally occupied by carbonaceous materials. Biocarbon represents an attractive alternative to traditional and bio-based fillers for improving mechanical, electrical, and physical properties of polymer-based composites. Its structure and property are strictly dependent on the combination of the feedstock and process conditions, therefore it shows tunable characteristics depending on its end-use application.

This Special Issue is focused on the preparation and characterization of polymer /bio-carbon composites for various applications. With the term bio-carbon we intend carbonaceous material produced through pyrolysis, torrefaction, hydrothermal carbonization and gasification. There are no limits in terms of application (i.e. aerospace, food packaging, automotive, biomedical, electrical, others) nature (biodegradable or not), composition, type of polymers (natural or synthetic polymers) and nature and dimension of the fillers. Both original contributions and reviews are welcome.

Dr. Donatella Duraccio
Prof. Dr. Rossella Arrigo
Guest Editors

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. Polymers 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 2700 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 composites
  • bio-carbon
  • waste
  • green composites
  • mechanical property
  • thermal property
  • electrical property
  • rheology
  • structure-property relationship

Published Papers (2 papers)

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Research

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16 pages, 3965 KiB  
Article
Ethylene-Vinyl Acetate (EVA) Containing Waste Hemp-Derived Biochar Fibers: Mechanical, Electrical, Thermal and Tribological Behavior
by Maria Giulia Faga, Donatella Duraccio, Mattia Di Maro, Riccardo Pedraza, Mattia Bartoli, Giovanna Gomez d’Ayala, Daniele Torsello, Gianluca Ghigo and Giulio Malucelli
Polymers 2022, 14(19), 4171; https://doi.org/10.3390/polym14194171 - 04 Oct 2022
Cited by 6 | Viewed by 2743
Abstract
To reduce the use of carbon components sourced from fossil fuels, hemp fibers were pyrolyzed and utilized as filler to prepare EVA-based composites for automotive applications. The mechanical, tribological, electrical (DC and AC) and thermal properties of EVA/fiber biochar (HFB) composites containing different [...] Read more.
To reduce the use of carbon components sourced from fossil fuels, hemp fibers were pyrolyzed and utilized as filler to prepare EVA-based composites for automotive applications. The mechanical, tribological, electrical (DC and AC) and thermal properties of EVA/fiber biochar (HFB) composites containing different amounts of fibers (ranging from 5 to 40 wt.%) have been thoroughly studied. The morphological analysis highlighted an uneven dispersion of the filler within the polymer matrix, with poor interfacial adhesion. The presence of biochar fibers did not affect the thermal behavior of EVA (no significant changes of Tm, Tc and Tg were observed), notwithstanding a slight increase in the crystallinity degree, especially for EVA/HFB 90/10 and 80/20. Conversely, biochar fibers enhanced the thermo-oxidative stability of the composites, which increased with increasing the biochar content. EVA/HFB composites showed higher stiffness and lower ductility than neat EVA. In addition, high concentrations of fiber biochar allowed achieving higher thermal conductivity and microwave electrical conductivity. In particular, EVA/HFB 60/40 showed a thermal conductivity higher than that of neat EVA (respectively, 0.40 vs. 0.33 W·m−1 ·K−1); the same composite exhibited an up to twenty-fold increased microwave conductivity. Finally, the combination of stiffness, enhanced thermal conductivity and intrinsic lubricating features of the filler resulted in excellent wear resistance and friction reduction in comparison with unfilled EVA. Full article
(This article belongs to the Special Issue Polymer/Bio-Carbon Composites: From Manufacturing to Applications)
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Review

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30 pages, 9163 KiB  
Review
Recent Advances in Biochar Polymer Composites
by Mattia Bartoli, Rossella Arrigo, Giulio Malucelli, Alberto Tagliaferro and Donatella Duraccio
Polymers 2022, 14(12), 2506; https://doi.org/10.3390/polym14122506 - 20 Jun 2022
Cited by 32 | Viewed by 4866
Abstract
“Biochar” (BC) is the solid residue recovered from the thermal cracking of biomasses in an oxygen-poor atmosphere. Recently, BC has been increasingly explored as a sustainable, inexpensive, and viable alternative to traditional carbonaceous fillers for the development of polymer-based composites. In fact, BC [...] Read more.
“Biochar” (BC) is the solid residue recovered from the thermal cracking of biomasses in an oxygen-poor atmosphere. Recently, BC has been increasingly explored as a sustainable, inexpensive, and viable alternative to traditional carbonaceous fillers for the development of polymer-based composites. In fact, BC exhibits high thermal stability, high surface area, and electrical conductivity; moreover, its main properties can be properly tuned by controlling the conditions of the production process. Due to its intriguing characteristics, BC is currently in competition with high-performing fillers in the formulation of multi-functional polymer-based composites, inducing both high mechanical and electrical properties. Moreover, BC can be derived from a huge variety of biomass sources, including post-consumer agricultural wastes, hence providing an interesting opportunity toward a “zero waste” circular bioeconomy. This work aims at providing a comprehensive overview of the main achievements obtained by combining BC with several thermoplastic and thermosetting matrices. In particular, the effect of the introduction of BC on the overall performance of different polymer matrices will be critically reviewed, highlighting the influence of differently synthesized BC on the final performance and behavior of the resulting composites. Lastly, a comparative perspective on BC with other carbonaceous fillers will be also provided. Full article
(This article belongs to the Special Issue Polymer/Bio-Carbon Composites: From Manufacturing to Applications)
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