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Advances in Biopolymers and Bioplastics

A special issue of Polymers (ISSN 2073-4360).

Deadline for manuscript submissions: closed (25 August 2023) | Viewed by 5140

Special Issue Editors


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Guest Editor
University of Zagreb Faculty of Mechanical Engineering and Naval Architecture, Ivana Lucica 5, 10000 Zagreb, Croatia
Interests: composites materials; composites production; additive manufacturing; properties of polymers; polymer production; recycling
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Co-Guest Editor
Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lucica 5, 10000 Zagreb, Croatia
Interests: bioplastics; biopolymers; biocomposites; composites production; plastic waste management; polymer mixing; polymer processing

Special Issue Information

Dear Colleagues,

A growing concern about the negative impacts of environmental pollution from plastic product waste has led to a great deal of research activity searching for alternatives that pose a lesser risk to the environment. Biopolymers and bioplastics are possible solutions because they are typically biodegradable materials obtained from renewable sources. Biopolymers are natural polymers produced in the growth cycles of cells of living organisms. They are created by Nature, and therefore can also be degraded by Nature. Natural polymers include cellulose, lignin, starch, collagen, gluten, etc. Biopolymers are used as one of the sources for the preparation of bioplastics, that is, plastics that can be biodegradable and/or made from renewable sources. The most common example is the mechanical or chemical treatment of starch to produce plastics (e.g., thermoplastic starch (TPS)). Other procedures for the production of bioplastics, which can be chemical or biotechnological (i.e., under the influence of enzymes or microorganisms), include the chemical synthesis of monomer-based polymers obtained by the biotechnological conversion of renewable resources (e.g., polylactide), biotechnological procedures based on renewable sources (e.g., synthesis of thermoplastic aliphatic polyesters by the fermentation of sugars performed by natural microorganisms), and chemical syntheses of polymers based on building blocks obtained by petrochemical processes from non-renewable resources.

Biopolymers and bioplastics are not new to the field of polymer science and technology. In recent decades, they have attracted a great deal of interest, not only from the plastics industry, but also from the public. Today, at a time of excessive pollution of the environment with fossil fuels and huge amounts of waste, biopolymers and bioplastics represent one of the possible solutions for reducing the impact of plastic waste on the environment. This Special Issue of Polymers invites contributions addressing all aspects of biopolymer and bioplastic production, applications, and waste management. Contributions can address a variety of topics, including biopolymers for tissue and regenerative medicine, biopolymers of microbial or plant or animal origin and their bioactive/pharmaceutical properties, ocean plastics, nanopolymers, active packaging with polymer or biopolymer composites, biocomposite materials, etc. Any original works on topics related to biopolymers and bioplastics are welcome.

Dr. Ana Pilipović
Guest Editor
Maja Rujnić Havstad
Co-Guest Editor

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
  • bioplastics
  • biobased plastics
  • biodegradable plastics
  • biocomposites
  • composting
  • production
  • regulations
  • structure and properties

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Published Papers (2 papers)

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Research

11 pages, 4973 KiB  
Article
Transfer of AgNPs’ Anti-Biofilm Activity into the Nontoxic Polymer Matrix
by Lívia Mačák, Oksana Velgosova, Erika Múdra, Marek Vojtko and Silvia Dolinská
Polymers 2023, 15(5), 1238; https://doi.org/10.3390/polym15051238 - 28 Feb 2023
Cited by 2 | Viewed by 1563
Abstract
A biological method was successfully applied to synthesize spherical silver nanoparticles (AgNPs) while using the extract of lavender (Ex-L) (lat. Lavandula angustifolia) as the reducing and stabilizing agent. The produced nanoparticles were spherical with an average size of 20 nm. The AgNPs’ [...] Read more.
A biological method was successfully applied to synthesize spherical silver nanoparticles (AgNPs) while using the extract of lavender (Ex-L) (lat. Lavandula angustifolia) as the reducing and stabilizing agent. The produced nanoparticles were spherical with an average size of 20 nm. The AgNPs’ synthesis rate confirmed the extract’s excellent ability to reduce silver nanoparticles from the AgNO3 solution. The presence of good stabilizing agents was confirmed by the excellent stability of the extract. Nanoparticles’ shapes and sizes did not change. UV-Vis absorption spectrometry, Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and scanning electron microscopy (SEM) were used to characterize the silver nanoparticles. The silver nanoparticles were incorporated into the PVA polymer matrix by the “ex situ” method. The polymer matrix composite with AgNPs was prepared in two ways: as a composite film and nanofibers (nonwoven textile). The anti-biofilm activity of AgNPs and the ability of AgNPs to transfer toxic properties into the polymer matrix were proved. Full article
(This article belongs to the Special Issue Advances in Biopolymers and Bioplastics)
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12 pages, 4675 KiB  
Article
Preparation, Structure, and Properties of PVA–AgNPs Nanocomposites
by Oksana Velgosova, Lívia Mačák, Erika Múdra, Marek Vojtko and Maksym Lisnichuk
Polymers 2023, 15(2), 379; https://doi.org/10.3390/polym15020379 - 10 Jan 2023
Cited by 12 | Viewed by 2854
Abstract
The aim of the work was to prepare a polymer matrix composite doped by silver nanoparticles and analyze the influence of silver nanoparticles (AgNPs) on polymers’ optical and toxic properties. Two different colloids of AgNPs were prepared by chemical reduction. The first colloid, [...] Read more.
The aim of the work was to prepare a polymer matrix composite doped by silver nanoparticles and analyze the influence of silver nanoparticles (AgNPs) on polymers’ optical and toxic properties. Two different colloids of AgNPs were prepared by chemical reduction. The first colloid, a blue one, contains stable triangular nanoparticles (the mean size of the nanoparticles was ~75 nm). UV–vis spectrophotometry showed that the second colloid, a yellow colloid, was very unstable. Originally formed spherical particles (~11 nm in diameter) after 25 days changed into a mix of differently shaped nanoparticles (irregular, triangular, rod-like, spherical, decahedrons, etc.), and the dichroic effect was observed. Pre-prepared AgNPs were added into the PVA (poly(vinyl alcohol)) polymer matrix and PVA–AgNPs composites (poly(vinyl alcohol) doped by Ag nanoparticles) were prepared. PVA–AgNPs thin layers (by a spin-coating technique) and fibers (by electrospinning and dip-coating techniques) were prepared. TEM and SEM techniques were used to analyze the prepared composites. It was found that the addition of AgNPs caused a change in the optical and antibiofilm properties of the non-toxic and colorless polymer. The PVA–AgNPs composites not only showed a change in color but a dichroic effect was also observed on the thin layer, and a good antibiofilm effect was also observed. Full article
(This article belongs to the Special Issue Advances in Biopolymers and Bioplastics)
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