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Polymers
Special Issues
Advances in Polymer-Based Coatings
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Advances in Polymer-Based Coatings

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

Deadline for manuscript submissions: closed (20 May 2023) | Viewed by 3127

Special Issue Editors

Dr. Zhiyong Qin

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Guest Editor
School of Resources Environment and Materials, Guangxi University, Nanning 530004, China
Interests: wood hydrophobicity; natural biological composites; antibacterial; composite membrane; hydrogel
Dr. Ian Wyman

E-Mail Website
Guest Editor
Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, ON K7L 3N6, Canada
Interests: self-assembly; coatings; materials science; supramolecular chemistry; block copolymers
Special Issues, Collections and Topics in MDPI journals
Dr. Muhammad Rabnawaz

E-Mail Website1 Website2
Guest Editor
School of Packaging, Michigan State University, East Lansing, MI, USA
Interests: packaging; materials; coatings; sustainability
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

At present, the most commonly used food packaging materials are traditional organic plastic packaging; however, this kind of packaging causes serious environmental problems and can damage people's health. In recent years, natural bioactive packaging has gradually entered the vision of researchers. Many natural compounds have excellent antibacterial, antioxidant and anti-inflammatory abilities, which is exactly what is required of food-packaging materials. An active packaging system involves the interaction between packaging materials and food, providing satisfactory taste and extended shelf life. Some additives are added to the packaging film to improve the performance of the packaging system, especially the antibacterial ability. In the laboratory, antibacterial substances have been widely tested for their potential applications in antibacterial food packaging. These substances include organic acids, enzymes, bacteriocins, fungicides, polymers, natural extracts, antibiotics, triclosan and silver compounds. The action mechanism of each antibacterial substance is unique, which is worthy of in-depth study.

In addition, the matrix of packaging materials is also very important. Natural polymers generally have good biodegradability, however, their stability and mechanical properties are not satisfactory. Thus, the modification of the base material of packaging is also a problem that requires exploring. This Special Issue aims to focus on the research of natural polymer materials, composites and "special" coatings that can be used in food packaging. It is also designed to support professionals, industrial practitioners, researchers and graduate students in the fields of polymer chemistry and engineering, coating materials science and chemical engineering who need to be aware of the most contemporary research information of polymer coatings.

Dr. Zhiyong Qin
Dr. Ian Wyman
Dr. Muhammad Rabnawaz
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

  • biological polysaccharide
  • essential oil
  • polyphenol
  • green extraction
  • green reduction
  • antibacterial
  • food packaging

Published Papers (1 paper)

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Research

16 pages, 4940 KiB  
Article
Accelerated Shelf-Life and Stability Testing of Hydrolyzed Corn Starch Films
by Andra-Ionela Ghizdareanu, Diana Pasarin, Alexandra Banu, Andreea Ionita (Afilipoaei), Cristina Emanuela Enascuta and Alexandru Vlaicu
Polymers 2023, 15(4), 889; https://doi.org/10.3390/polym15040889 - 10 Feb 2023
Cited by 3 | Viewed by 2674
Abstract
Nonbiodegradable food packaging films are made from plastics such as polyethylene and polypropylene, which can take hundreds of years to decompose and create environmental hazards. On the other hand, biodegradable food packaging films are made from renewable materials such as corn starch or [...] Read more.
Nonbiodegradable food packaging films are made from plastics such as polyethylene and polypropylene, which can take hundreds of years to decompose and create environmental hazards. On the other hand, biodegradable food packaging films are made from renewable materials such as corn starch or cellulose, that degrade within a few weeks or months and prove to be more sustainable and environmentally friendly. In this work, we used corn starch hydrolyzed (CSH) with α-amylase to prepare a film with biodegradable properties. The film was tested for 60 days at different accelerated temperatures and relative humidity (RH), 13 ± 2 °C and 65 ± 5% RH, 23 ± 2 °C and 45 ± 5% RH, and 33 ± 2 °C and 30 ± 5% RH, to test its durability and stability. Soil biodegradation of the CSH film was evaluated by visual appearance, microscopic observation, weight loss, scanning electron microscopy (SEM), and Fourier-transformed infrared spectroscopy (FTIR) every 6 days. The film was found to have strong hygroscopic properties and was able to last up to 10 months if it is maintained at 20 ± 5 °C and 45 ± 5% RH. After the biodegradability test for at least 30 days, the film showed a significantly higher weight loss rate and microbial activity on the surface of the film, which indicates that the film is biodegradable. The present work recommends biodegradable CSH films as an excellent environmentally friendly choice for dried foods packaging, due to their good shelf life at room temperature, which is beneficial when shipping and storing products, but these films are not suitable for foods with high moisture content. Full article
(This article belongs to the Special Issue Advances in Polymer-Based Coatings)
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