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Multifunctional Polymeric Formulations for Sustainable Food Packaging Applications, 2nd Edition

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Biobased and Biodegradable Polymers".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 1423

Special Issue Editors


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Guest Editor

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Guest Editor
Packaging Innovation Center (LABEN), Technology Faculty, Center for the Development of Nanoscience and Nanotechnology CEDENNA, University of Santiago de Chile (USACH), Santiago 9170201, Chile
Interests: active food packaging; packaging films; thymol; propolis; pinobanksin; stingless bees; clostridium acetobutylicum; biobutanol; ethanol fermentation; supercritical carbon dioxide; supercritical fluid extraction

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Guest Editor
1. Department of Science and Technology, National University of Quilmes, Roque Sáenz Peña 352, Bernal, Buenos Aires B1876BXD, Argentina
2. National Scientific and Technical Research Council (CONICET), Buenos Aires C1033AAJ, Argentina
Interests: food packaging; biodegradable polymers; microbial biobased polymers; active materials; natural additives; waste valorization
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Special Issue Information

Dear Colleagues,

Currently, polymeric materials are the most used polymers in the food packaging sector due to their many advantages (e.g., low cost, light weight, ease of processing, etc.). However, due to increasing environmental concern related to the fossil-based origin of most traditional plastics, as well as the high amount of plastic waste produced, the food packaging industry is continuously looking for new multifunctional sustainable polymeric formulations. Nevertheless, sustainable polymeric formulations, such as those based on bio-based and/or biodegradable polymers and recycled and/or recyclable polymers, do not satisfy the high-performance requirements of traditional food packaging materials. For these reasons, important research efforts have been conducted in the field of more sustainable polymeric formulations in the last decade, including the development of composites and nanocomposites, multilayer structures, as well as polymers with active (e.g., antioxidant, antimicrobial, etc.) or intelligent (e.g., pH-responsive, thermally activated shape-memory properties, etc.) functionalities.

This Special Issue is intended to compile the most recent research works in sustainable polymeric formulations intended for food packaging applications, with improved environmental efficiency.

Original research contributions focused on the possibility of the industrial scalability of such sustainable polymeric formulations, their multifunctional performance improvements with interest for their use as food packaging materials (e.g., cost-effective solutions, novel processing technologies, active/intelligent functionalities, and improved optical, mechanical, and/or barrier properties), as well on their sustainable end-of-life options (e.g., compostability, improved recyclability, etc.) are welcome.

We hope that research articles and/or review papers included in this Special Issue will help the food packaging sector in the challenge of transferring to novel sustainable formulations in the industrial sector.

Dr. Marina Patricia Arrieta Dillon
Prof. Dr. Alejandra Torres
Dr. Mercedes Ana Peltzer
Guest Editors

Manuscript Submission Information

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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

  • food packaging
  • active packaging
  • intelligent packaging
  • edible polymers
  • biopolymers
  • biobased polymers
  • biodegradable polymers
  • recyclable polymers
  • recycled polymers
  • natural additives 
  • functional properties

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Published Papers (2 papers)

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Research

24 pages, 6184 KiB  
Article
Integration of Complexed Caffeic Acid into Poly(Lactic Acid)-Based Biopolymer Blends by Supercritical CO2-Assisted Impregnation and Foaming: Processing, Structural and Thermal Characterization
by Patricia Rivera, Alejandra Torres, Miguel Pacheco, Julio Romero, Marina P. Arrieta, Francisco Rodríguez-Mercado and Julio Bruna
Polymers 2025, 17(6), 803; https://doi.org/10.3390/polym17060803 - 18 Mar 2025
Viewed by 395
Abstract
Conventional techniques for incorporating active ingredients into polymeric matrices are accompanied by certain disadvantages, primarily attributable to the inherent characteristics of the active ingredient itself, including its sensitivity to temperature. A potential solution to these challenges lies in the utilization of supercritical carbon [...] Read more.
Conventional techniques for incorporating active ingredients into polymeric matrices are accompanied by certain disadvantages, primarily attributable to the inherent characteristics of the active ingredient itself, including its sensitivity to temperature. A potential solution to these challenges lies in the utilization of supercritical carbon dioxide (scCO2) for the formation of polymeric foam and the incorporation of active ingredients, in conjunction with the encapsulation of inclusion complexes (ICs), to ensure physical stability and augmented bioactivity. The objective of this study was to assess the impact of IC impregnation and subsequent foam formation on PLA films and PLA/PBAT blends that had been previously impregnated. The study’s methodology encompassed the formation and characterization of ICs with caffeic acid (CA) and β-cyclodextrin (β-CD), along with the thermal, structural, and morphological properties of the resulting materials. Higher incorporation of impregnated IC into the PLA(42)/PBAT(58) blend was observed at 12 MPa pressure and a depressurization rate of 1 MPa/min. The presence of IC, in addition to a lower rate of expansion, contributed to the formation of homogeneous cells with a size range of 4–44 um. On the other hand, the incorporation of IC caused a decrease in the crystallinity of the PLA fraction due to the interaction of the complex with the polymer. This study makes a significant contribution to the advancement of knowledge on the incorporation of compounds encapsulated in β-CD by scCO2, as well as to the development of active materials with potential applications in food packaging. Full article
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18 pages, 14493 KiB  
Article
In Situ Reactive Extrusion of LDPE Films with Methacrylated Pyrogallol for Antimicrobial and Antioxidant Active Packaging
by Sharifa Salma Sulistiawan, Kambiz Sadeghi, Ritesh Kumar, Dowan Kim and Jongchul Seo
Polymers 2025, 17(3), 325; https://doi.org/10.3390/polym17030325 - 25 Jan 2025
Viewed by 837
Abstract
Reactive extrusion is a scalable technology for active packaging that promotes food quality and safety. This study investigated the grafting of a methacrylate pyrogallol (PGMC) active agent onto low-density polyethylene (LDPE) through an in situ reactive extrusion process with varying concentrations of PGMC [...] Read more.
Reactive extrusion is a scalable technology for active packaging that promotes food quality and safety. This study investigated the grafting of a methacrylate pyrogallol (PGMC) active agent onto low-density polyethylene (LDPE) through an in situ reactive extrusion process with varying concentrations of PGMC (1, 3, and 5 wt.%). The addition of 5% PGMC increased the tensile strength of pure LDPE from 17.94 MPa to 22.04 MPa. The thermal stability of the samples remained unaffected after PGMC addition, and the grafting process did not interfere with the barrier properties of the LDPE films. Furthermore, 5% PGMC exhibited significant antimicrobial properties, showing 100% and 99.11% reductions in the microbial activity of Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive), respectively. Moreover, the LDPE film with 5% PGMC demonstrated the highest DPPH scavenging effect, reaching up to 85.71%. Therefore, LDPE-g-PGMC films (5%), with antimicrobial and antioxidant properties, have potential applications in non-migratory active packaging. Full article
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