Special Issue "Green and Biodegradable Additives and Fillers for Polymers"

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

Deadline for manuscript submissions: closed (31 March 2021) | Viewed by 2148

Special Issue Editors

Prof. Dr. Pierangiola Bracco
E-Mail Website
Guest Editor
Department of Chemistry, University of Torino, Via Pietro Giuria 7, 10125 Torino, Italy
Interests: biomedical polymers; polymer degradation and stabilization; electrospinning; polymer characterization, polymer irradiation
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Marco Zanetti
E-Mail Website
Guest Editor
Department of Chemistry, University of Torino, Via Pietro Giuria 7, 10125 Torino, Italy
Interests: polymer degradation and stability; electrospinning; nanocomposites; carbon materials; flame retardant; biomedical polymers
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The reduction of fossil resources, increase in energy demand, and global warming are stimulating the growth in demand for renewable polymeric products with low environmental impact. Alternatives to fossil-derived polymeric materials have sparked growing interest among researchers and industrialists and advances in technology have opened up new windows of opportunity to explore the potential of biopolymers. “Green” attention has often been focused on the polymer alone or at most on the production process. However, polymeric materials are rarely usable in pure form. Since the beginnings of the plastics industry, it has been necessary to add a variety of substances to a base polymer to make it at least processable. It has also been clear that additives are needed to obtain polymeric products suitable for most applications, to improve desirable properties and to eliminate or mitigate undesirable properties. As a result, a multitude of chemicals is generally needed to obtain adequate properties and the durability of the polymeric product, such as fillers, flame retardants, antioxidants, pigments, and so on. Hence, it is unimaginable to develop new polymers based on green chemistry paradigms without applying the same approach to additives and fillers. 

This Special Issue will focus on original and innovative research in the field of green and biodegradable additives and fillers for polymers. Submissions are welcome on topics related to green additives, naturally sourced fillers, and their applications in the production and recycling of low-impact polymeric products.

Prof. Dr. Pierangiola Bracco
Prof. Dr. Marco Zanetti
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 2400 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

  • Green additives
  • Green polymers
  • Environmentally friendly plastics
  • Sustainable polymers
  • Biocomposites
  • Biodegradable plastics
  • Materials for a circular economy
  • Renewable resources
  • Waste valorization

Published Papers (1 paper)

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Research

Article
Insights into the Thermo-Mechanical Treatment of Brewers’ Spent Grain as a Potential Filler for Polymer Composites
Polymers 2021, 13(6), 879; https://doi.org/10.3390/polym13060879 - 12 Mar 2021
Cited by 6 | Viewed by 1375
Abstract
This paper investigated the impact of twin-screw extrusion parameters on the properties of brewers’ spent grain. The chemical structure, antioxidant activity, particle size, and color properties, as well as the emission of volatile organic compounds during extrusion, were investigated. The main compounds detected [...] Read more.
This paper investigated the impact of twin-screw extrusion parameters on the properties of brewers’ spent grain. The chemical structure, antioxidant activity, particle size, and color properties, as well as the emission of volatile organic compounds during extrusion, were investigated. The main compounds detected in the air during modifications were terpenes and terpenoids, such as α-pinene, camphene, 3-carene, limonene, or terpinene. They could be considered as a potential threat to human health and the environment. Changes in the chemical structure, antioxidant activity, and color of materials after modification indicated the Maillard reactions during extrusion, which resulted in the generation of melanoidins, especially at higher temperatures. This should be considered an exciting feature of this treatment method because modified brewers’ spent grain may improve the thermooxidative stability of polymer materials. Moreover, the impact of the brewers’ spent grain particle size on color and browning index used to determine the melanoidins content was investigated. The presented results show that proper adjustment of extrusion parameters enables the preparation of brewers’ spent grain with the desired appearance and chemical properties, which could maximize the efficiency of the modification process. Full article
(This article belongs to the Special Issue Green and Biodegradable Additives and Fillers for Polymers)
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