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Polymers
Special Issues
Advances in Biocomposites and Bioplastics
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Advances in Biocomposites and Bioplastics

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 May 2022) | Viewed by 5738

Special Issue Editors

Prof. Dr. Joaquín M. Martínez Urreaga

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Guest Editor
Departamento de Ingeniería Química Industrial y del Medio Ambiente, E.T.S.I. Industriales, Universidad Politécnica de Madrid, José Gutiérrez Abascal, 2. 28006 Madrid, Spain
Interests: plastics recycling; biobased polymers; biocomposites; degradation
Prof. Dr. María Ulagares de la Orden

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Guest Editor
Department of Organic Chemistry, Complutense University of Madrid, Madrid, Spain
Interests: biopolymers; biocomposites; mechanical recycling; packaging; optical properties
Special Issues, Collections and Topics in MDPI journals
Dr. Marina Patricia Arrieta Dillon

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Guest Editor
Department of Industrial and Environmental Chemical Engineering, E.T.S.I. Industriales, Technical University of Madrid, Madrid, Spain
Interests: food packaging; biobased and/or biodegradable polymers; nanocomposites; active materials; waste valorization; mechanical recycling; compostability.
Special Issues, Collections and Topics in MDPI journals
Dr. Freddys R. Beltrán González

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Guest Editor
Departamento de Ingeniería Química Industrial y Medio Ambiente, E.T.S.I. Industriales, Universidad Politécnica de Madrid, Madrid, Spain
Interests: bio-based polymers; biodegradable polymers; mechanical recycling and upgrading; packaging applications; waste valorization; nanocomposites
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The use of biopolymers in advanced industrial applications, such as food packaging, has increased considerably in recent years, with the main objectives of reducing the consumption of non-renewable resources and the accumulation of plastic waste in the environment (i.e., landfills, oceans, etc.). However, many biopolymer-based plastics do not yet possess the overall performance required for some very demanding industrial applications. Therefore, several strategies have been proposed to improve its properties and thus increase its use at an industrial level, including copolymerization, mixing with other polymers, reactive extrusion, surface treatments, and the use of additives. Among these improvement strategies, the development of biocomposites (micro and nano) plays an important role. Another issue of growing interest is the study of end-of-life scenarios for plastics based on biopolymers.

Cutting-edge contributions focused on improving the overall performance of biobased and biodegradable polymers and biocomposites for advanced industrial applications in the context of circular economy are welcome.

Prof. Dr. Joaquín M. Martínez Urreaga
Prof. Dr. María Ulagares de la Orden
Dr. Marina Patricia Arrieta Dillon
Dr. Freddys R. Beltrán González
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

  • biopolymers
  • recycling
  • composites
  • nanocomposites
  • plasticizers

Published Papers (2 papers)

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Research

20 pages, 3395 KiB  
Article
Printability Study of a Conductive Polyaniline/Acrylic Formulation for 3D Printing
by Goretti Arias-Ferreiro, Ana Ares-Pernas, Aurora Lasagabáster-Latorre, Nora Aranburu, Gonzalo Guerrica-Echevarria, M. Sonia Dopico-García and María-José Abad
Polymers 2021, 13(13), 2068; https://doi.org/10.3390/polym13132068 - 23 Jun 2021
Cited by 16 | Viewed by 2662
Abstract
There is need for developing novel conductive polymers for Digital Light Processing (DLP) 3D printing. In this work, photorheology, in combination with Jacobs working curves, efficaciously predict the printability of polyaniline (PANI)/acrylate formulations with different contents of PANI and photoinitiator. The adjustment of [...] Read more.
There is need for developing novel conductive polymers for Digital Light Processing (DLP) 3D printing. In this work, photorheology, in combination with Jacobs working curves, efficaciously predict the printability of polyaniline (PANI)/acrylate formulations with different contents of PANI and photoinitiator. The adjustment of the layer thickness according to cure depth values (Cd) allows printing of most formulations, except those with the highest gel point times determined by photorheology. In the working conditions, the maximum amount of PANI embedded within the resin was ≃3 wt% with a conductivity of 10−5 S cm−1, three orders of magnitude higher than the pure resin. Higher PANI loadings hinder printing quality without improving electrical conductivity. The optimal photoinitiator concentration was found between 6 and 7 wt%. The mechanical properties of the acrylic matrix are maintained in the composites, confirming the viability of these simple, low-cost, conductive composites for applications in flexible electronic devices. Full article
(This article belongs to the Special Issue Advances in Biocomposites and Bioplastics)
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21 pages, 4848 KiB  
Article
Effect of Yerba Mate and Silk Fibroin Nanoparticles on the Migration Properties in Ethanolic Food Simulants and Composting Disintegrability of Recycled PLA Nanocomposites
by Freddys R. Beltrán, Marina P. Arrieta, Diego Elena Antón, Antonio A. Lozano-Pérez, José L. Cenis, Gerald Gaspar, María U. de la Orden and Joaquín Martínez Urreaga
Polymers 2021, 13(12), 1925; https://doi.org/10.3390/polym13121925 - 10 Jun 2021
Cited by 8 | Viewed by 3316
Abstract
The main objective of the present research is to study the effect of the incorporation of low amounts of silk fibroin nanoparticles (SFNs) and yerba mate nanoparticles (YMNs) on the migration phenomenon into ethanolic food simulants as well as on the disintegrability under [...] Read more.
The main objective of the present research is to study the effect of the incorporation of low amounts of silk fibroin nanoparticles (SFNs) and yerba mate nanoparticles (YMNs) on the migration phenomenon into ethanolic food simulants as well as on the disintegrability under composting conditions of mechanically recycled polylactic acid (PLA). Recycled PLA was obtained under simulated recycling conditions by melt processing virgin PLA into films and further subjecting them to an accelerated aging process, which involved photochemical, thermal, and hydrothermal aging steps followed by an intense washing step. SFNs were extracted from Bombyx mori cocoons and YMNs from yerba mate waste. Then, recycled PLA was melted, reprocessed, and reinforced with either 1%wt. of SFNs or YMNs, by melt extrusion, and further processed into films by compression molding. The obtained nanocomposites were exposed to ethanolic food simulants (ethanol 10% v/v, simulant A and ethanol 50% v/v, simulant D1) and the structural, thermal, and mechanical properties were studied before and after the exposure to the food simulants. The migration levels in both food simulants were below the overall migration limits required for food contact materials. The materials were disintegrated under simulated composting conditions at the laboratory scale level and it was observed that the nanoparticles delayed the disintegration rate of the recycled PLA matrix, but nanocomposites were fully disintegrated in less than one month. Full article
(This article belongs to the Special Issue Advances in Biocomposites and Bioplastics)
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