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Processing, Modification and Properties of Biodegradable Polymeric Materials
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Processing, Modification and Properties of Biodegradable Polymeric Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Polymeric Materials".

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 7622

Special Issue Editor

Dr. Rafał Malinowski

E-Mail Website
Guest Editor
Łukasiewicz Research Network-Institute for Engineering of Polymer Materials and Dyes, Maria Skłodowska-Curie 55, 87-100 Toruń, Poland
Interests: polymer materials; polymer chemistry; polymer processing; modification and research of surface; films activation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Biodegradable polymers form one of the main groups of polymeric materials that have received a great amount of interest in recent years from both scientists and entrepreneurs. This interest is the result of the discovery of new properties of these materials, mostly their biodegradability under various environmental conditions. However, many biodegradable polymers, due to their properties and price, are inferior compared to conventional ones. Many methods are currently being utilized in order for biodegradable polymers to match market demand, and to increase their production and lower their price. To this end, a number of technological operations connected with the production of polymer blends, composites or nanocomposites, as well as biodegradable copolymers, crosslinked or grafted polymers are being carried out. The modifications also refer to polymer processing, mainly its conditions or the design features of machines and devices. The issues in the field of property modification of the final products, i.e., issues of surface activation, metallization or sterilization, are no less important. Moreover, studies on low-molecular weight compounds used as modifiers of polymeric properties, e.g., plasticizers, nucleants, polymeric chain extenders, stabilizers, fillers or blowing agents, are also being conducted.

This Special Issue is dedicated to the processing of biodegradable polymeric materials and the modification and investigation of their properties. The presentation of the most significant issues associated with the abovementioned research topics as well as the important trends in this area are welcome. Reviews, full papers, and short communications focused on new achievements in this area are expected.

Dr. Rafał Malinowski
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. Materials 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 2600 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

  • Biodegradable polymers
  • Biocomposites
  • Polymer processing
  • Extrusion
  • Property modification
  • Characteristics of biodegradable polymers

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Published Papers (3 papers)

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Research

11 pages, 3462 KiB  
Article
Mechanical Properties and Tensile Model of Hemp-Fiber-Reinforced Poly(butylene adipate-co-terephthalate) Composite
by Deyong Zeng, Liang Zhang, Shaojin Jin, Youyuan Zhang, Cuicui Xu, Kai Zhou and Weihong Lu
Materials 2022, 15(7), 2445; https://doi.org/10.3390/ma15072445 - 26 Mar 2022
Cited by 8 | Viewed by 2066
Abstract
The preparation of a high-strength biodegradable plastic has always been the focus of academia. Here, we prepared two biodegradable composites using silane coupling-agent-modified hemp fibers (Si-HF) and unmodified hemp fibers (HF) with butylene adipate-co-terephthalate (PBAT), respectively. We compared the differences of [...] Read more.
The preparation of a high-strength biodegradable plastic has always been the focus of academia. Here, we prepared two biodegradable composites using silane coupling-agent-modified hemp fibers (Si-HF) and unmodified hemp fibers (HF) with butylene adipate-co-terephthalate (PBAT), respectively. We compared the differences of Si-HF/PBAT and HF/PBAT in terms of micromorphology, density, mechanical properties, thermal stability and biodegradability. The Si-HF has better interface interaction between the hemp and the PBAT matrix than the HF, which makes Si-HF/PBAT have better tensile properties. Moreover, Si-HF/PBAT has stronger tensile strength and modulus than HF/PBAT. Our results also show that the two composites have good biodegradability. This study provides an important reference for the subsequent development and utilization of hemp fibers. Full article
(This article belongs to the Special Issue Processing, Modification and Properties of Biodegradable Polymeric Materials)
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13 pages, 2397 KiB  
Article
New Organophilic Montmorillonites with Lactic Acid Oligomers and Other Environmentally Friendly Compounds and Their Effect on Mechanical Properties of Polylactide (PLA)
by Katarzyna Rucińska, Zbigniew Florjańczyk, Maciej Dębowski, Tomasz Gołofit and Rafał Malinowski
Materials 2021, 14(21), 6286; https://doi.org/10.3390/ma14216286 - 21 Oct 2021
Viewed by 2253
Abstract
New organophilic montmorillonites with oligomers of lactic acid and other compounds such as citric acid, stearic acid, maleic anhydride, pentaerythritol and ε-caprolactone were synthesized. They were characterized by Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), [...] Read more.
New organophilic montmorillonites with oligomers of lactic acid and other compounds such as citric acid, stearic acid, maleic anhydride, pentaerythritol and ε-caprolactone were synthesized. They were characterized by Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), elemental analysis and swelling capacity in water. In all tested composites, an increase in the montmorillonite interlayer distance resulting from intercalation of the modifying substance in the montmorillonite was found by means of XRD. Elemental analysis and FTIR showed that all of the tested samples contained an organic segment in the montmorillonite structure. TGA studies revealed that composites modified with lactic acid oligomers, stearic acid or ε-caprolactone had the highest thermal stability. They also exhibited the lowest swelling capacity which was 2–3 times lower than that for unmodified sodium montmorillonite. Some preliminary studies on the mechanical properties of PLA/modified montmorillonite are also presented and discussed. Full article
(This article belongs to the Special Issue Processing, Modification and Properties of Biodegradable Polymeric Materials)
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25 pages, 4209 KiB  
Article
Effect of Basalt Powder Surface Treatments on Mechanical and Processing Properties of Polylactide-Based Composites
by Mateusz Barczewski, Olga Mysiukiewicz, Krzysztof Lewandowski, Daniel Nowak, Danuta Matykiewicz, Jacek Andrzejewski, Katarzyna Skórczewska and Adam Piasecki
Materials 2020, 13(23), 5436; https://doi.org/10.3390/ma13235436 - 29 Nov 2020
Cited by 17 | Viewed by 2735
Abstract
Legislative restrictions and the needs of consumers have created a demand for sustainable materials. Polylactide (PLA) is a biodegradable polyester with advantageous mechanical properties, however, due to its low crystallization rate, it also has low thermomechanical stability. Its range of application temperatures can [...] Read more.
Legislative restrictions and the needs of consumers have created a demand for sustainable materials. Polylactide (PLA) is a biodegradable polyester with advantageous mechanical properties, however, due to its low crystallization rate, it also has low thermomechanical stability. Its range of application temperatures can be widened using nucleating agents and fillers including basalt powder (BP), a waste product from the mining industry. This study analyzed the possibility of enhancing the properties of a PLA-BP composite by chemically treating the filler. Basalt powder was subjected to silanization with 3-aminopropyltriethoxysilane or γ-glycidoxypropyltrimethoxysilane and mixed with PLA at 5–20 wt%. The nucleating effect of a potassium salt of 3,5-bis(methoxycarbonyl) (LAK-301) in the silanized composite was also evaluated. The properties of the materials with silanized BP were compared with the unmodified basalt powder. The miscibility of the filler and the polymer was assessed by oscillatory rheometry. The structure of the composites was studied using scanning electron microscopy and their thermomechanical properties were analyzed using dynamic mechanical thermal analysis. Mechanical properties such as tensile strength, hardness and impact strength, and heat deflection temperature of the materials were also determined. It was concluded that BP-filled nucleated PLA composites presented satisfactory thermomechanical stability without silanization, but chemical treatment could improve the matrix–filler interactions. Full article
(This article belongs to the Special Issue Processing, Modification and Properties of Biodegradable Polymeric Materials)
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