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Polymers
Special Issues
Preparation and Applications of Biodegradable Polymer Materials
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Preparation and Applications of Biodegradable Polymer Materials

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

Deadline for manuscript submissions: 15 October 2024 | Viewed by 8507

Special Issue Editors

Dr. Maoli Yin

E-Mail Website
Guest Editor
School of Textile and Garment, Anhui Polytechnic University, Wuhu 241000, China
Interests: polysaccharide; hydrogels; biomaterials; functional finishing; textiles
Prof. Dr. Jing Chen

E-Mail Website
Guest Editor
School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
Interests: hydrogel; drug delivery; biomaterials; pytomedicine
Prof. Dr. Wanjun Liu

E-Mail Website
Guest Editor
College of Textiles, Donghua University, Shanghai 201620, China
Interests: biomaterials; islet encapsulation; bioprinting; hydrogels; nanofibers; textiles
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

As a kind of environmentally friendly polymer material, biodegradable polymer materials have the advantages of tunable biodegradability, being harmless to the environment after degradation, outstanding physical and chemical properties, vast application potential, etc. Therefore, biodegradable polymer materials have been widely investigated for applications in textiles, environmental protection, biomedical engineering, and product packaging. This Special Issue of Polymers, ‘Preparation and Applications of Biodegradable Polymer Materials’, invites contributions in relation to several aspects of biodegradable polymer materials: (1) new principles and methods for green processing and the high-value utilization of natural degradable polymer materials (collagen, fibrin, starch, alginate, chitin/chitosan, hyaluronic acid derivatives, etc.); (2) structure design, synthesis, and properties of synthetic biodegradable polymer materials (polylactic acid, polyhydroxyl fatty acid ester, polycaprolactone, etc.); (3) studies on the degradation process and its mechanism of biodegradable polymer materials; (4) modified biodegradable polymer materials with improved performance, reduced cost, and so on; (5) applications of biodegradable polymer materials in textiles, environmental protection (disposable daily necessities, agriculture, garden, etc.), biomedical engineering (surgical sutures, tissue scaffolds, artificial skin, controlled drug release), packaging (plastic film, packaging bags, etc.), and other fields. The above list is indicative and by no means exhaustive, and any original theoretical or simulation work or review articles on biodegradable polymer materials are welcome.

Dr. Maoli Yin
Prof. Dr. Jing Chen
Prof. Dr. Wanjun Liu
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

  • natural biodegradable polymers
  • synthetic biodegradable polymers
  • mechanism of degradation process
  • textiles
  • biomedical applications
  • packaging materials

Published Papers (5 papers)

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Research

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14 pages, 4188 KiB  
Article
Properties of Stereocomplex PLA for Melt Spinning
by Boris Marx, Lars Bostan, Axel S. Herrmann, Laura Boskamp and Katharina Koschek
Polymers 2023, 15(23), 4510; https://doi.org/10.3390/polym15234510 - 23 Nov 2023
Viewed by 745
Abstract
Fibers made from biopolymers are one solution for conserving both resources and the environment. However, these fibers currently have limited strengths, which limit their use for textile applications. In this paper, a biopolymer stereocomplex poly(-lactide) (scPLA) formation on a technical scale of high-molecular-weight [...] Read more.
Fibers made from biopolymers are one solution for conserving both resources and the environment. However, these fibers currently have limited strengths, which limit their use for textile applications. In this paper, a biopolymer stereocomplex poly(-lactide) (scPLA) formation on a technical scale of high-molecular-weight poly(D-lactide) (PDLA) and poly(L-lactide) (PLLA) is presented. This scPLA material is the basis for further research to develop scPLA yarns in melt spinning with technical strengths for technical application. scPLA is compared with standard and commercially available semi-crystalline PLA for the production of fibers in melt spinning (msPLA) with textile strengths. Differential scanning calorimetry (DSC) gives a degree of crystallization of 59.7% for scPLA and 47.0% for msPLA. X-ray diffraction (XRD) confirms the pure stereocomplex crystal structure for scPLA and semi-crystallinity for msPLA. scPLA and msPLA are also compared regarding their processing properties (rheology) in melt spinning. While complex viscosity of scPLA is much lower compared to msPLA, both materials show similar viscoelastic behavior. Thermal gravimetric analysis (TGA) shows the influence of the molecular weight on the thermal stability, whereas essentially the crystallinity influences the biodegradability of the PLA materials. Full article
(This article belongs to the Special Issue Preparation and Applications of Biodegradable Polymer Materials)
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19 pages, 5732 KiB  
Article
Green Hydrogels Loaded with Extracts from Solanaceae for the Controlled Disinfection of Agricultural Soils
by Ilaria Clemente, Michele Baglioni, Claudia Bonechi, Flavia Bisozzi, Claudio Rossi and Gabriella Tamasi
Polymers 2023, 15(22), 4455; https://doi.org/10.3390/polym15224455 - 18 Nov 2023
Viewed by 1197
Abstract
The UN 2030 Agenda for Sustainable Development established the goal of cutting the use of pesticides in the EU by 50% by 2030. However, a ban on pesticides could seriously affect the productivity of agriculture, resulting in severe issues due to global hunger [...] Read more.
The UN 2030 Agenda for Sustainable Development established the goal of cutting the use of pesticides in the EU by 50% by 2030. However, a ban on pesticides could seriously affect the productivity of agriculture, resulting in severe issues due to global hunger and food deficiency. Controlled release (CR) of bioactive chemicals could play a valid alternative in this context. To this aim, two biodegradable polymers, namely sodium alginate (AL) and sodium carboxymethylcellulose (CMC), were employed to obtain crosslinked hydrogel beads for the encapsulation and CR of glycoalkaloids extracted from tomato and potato leaves to be used as biocompatible disinfectants for agricultural soils. The physico-chemical characterization of the controlled-release systems was carried out by means of Attenuated Total Reflectance–Fourier Transform Infrared (ATR-FTIR) spectroscopy, Scanning Electron Microscopy (SEM), thermogravimetry (TGA), differential scanning calorimetry (DSC) (FWI > 80%) and drying kinetics. The plant extracts and the encapsulation efficiency (~84%) were, respectively, characterized and evaluated by High-performance Liquid Chromatography–Mass Spectrometry (HPLC-MS). Finally, preliminary microbiological tests were conducted to test the efficacy of the most promising systems as biocidal formulations both in the lab and on a model soil, and interesting results were obtained in the reduction of bacterial and fungal load, which could lead to sustainable perspectives in the field. Full article
(This article belongs to the Special Issue Preparation and Applications of Biodegradable Polymer Materials)
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13 pages, 3080 KiB  
Article
Bacterial Population Changes during the Degradation Process of a Lactate (LA)-Enriched Biodegradable Polymer in River Water: LA-Cluster Preferable Bacterial Consortium
by Ryosuke Kadoya, Hitomi Soga, Miki Matsuda, Michio Sato and Seiichi Taguchi
Polymers 2023, 15(20), 4111; https://doi.org/10.3390/polym15204111 - 17 Oct 2023
Cited by 1 | Viewed by 833
Abstract
The lactate-based polyester poly[lactate (LA)-co-3-hydroxybutyrate (3HB)], termed LAHB, is a highly transparent and flexible bio-based polymeric material. There are many unknowns regarding its degradation process in riverine environments, especially the changes in bacterial flora that might result from its degradation and [...] Read more.
The lactate-based polyester poly[lactate (LA)-co-3-hydroxybutyrate (3HB)], termed LAHB, is a highly transparent and flexible bio-based polymeric material. There are many unknowns regarding its degradation process in riverine environments, especially the changes in bacterial flora that might result from its degradation and the identities of any LAHB-degrading bacteria. LAHB were immersed in the river water samples (A and B), and LAHB degradation was observed in terms of the weight change of the polymer and the microscopic changes on the polymer surfaces. A metagenomic analysis of microorganisms was conducted to determine the effect of LAHB degradation on the aquatic environment. The bacterial flora obtained from beta diversity analysis differed between the two river samples. The river A water sample showed the simultaneous degradation of LA and 3HB even though the copolymer was LA-enriched, suggesting preferable hydrolysis of the LA-enriched segments. In contrast, only 3HB degraded for the LAHB in the river B water sample. The linear discriminant analysis effect size (LEfSe) analysis revealed 14 bacteria that were significantly increased in the river A water sample during LAHB degradation, suggesting that these bacteria preferentially degraded and assimilated LA-clustering polymers. Our metagenomic analysis provides useful insights into the dynamic changes in microbial communities and LA-clustering polymer-degrading bacteria. Full article
(This article belongs to the Special Issue Preparation and Applications of Biodegradable Polymer Materials)
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16 pages, 7266 KiB  
Article
Evaluation of Self-Degradation and Plugging Performance of Temperature-Controlled Degradable Polymer Temporary Plugging Agent
by Hualei Xu, Liangjun Zhang, Jie Wang and Houshun Jiang
Polymers 2023, 15(18), 3732; https://doi.org/10.3390/polym15183732 - 11 Sep 2023
Cited by 1 | Viewed by 808
Abstract
Temporary plugging diversion fracturing (TPDF) technology has been widely used in various oil fields for repeated reconstruction of high-water-cut old oil wells and horizontal well reservoir reconstruction. Previous studies have carried out in-depth study on the pressure-bearing law and placement morphology of different [...] Read more.
Temporary plugging diversion fracturing (TPDF) technology has been widely used in various oil fields for repeated reconstruction of high-water-cut old oil wells and horizontal well reservoir reconstruction. Previous studies have carried out in-depth study on the pressure-bearing law and placement morphology of different types of temporary plugging agents (TPAs) in fractures, but there are relatively few studies on TPA accumulation body permeability. To solve this problem, an experimental device for evaluating the TPA performance with adjustable fracture pores is proposed in this paper. Based on the test of fracturing fluid breaking time and residue content, the low damage of fracturing fluid to the reservoir is determined. The TPA degradation performance test determines whether the TPA causes damage to the hydraulic fracture after the temporary plugging fracturing. Finally, by testing the TPA pressure-bearing capacity and the temporary plugging aggregation body permeability, the plugging performance and the aggregation body permeability are determined. The results show the following: (1) Guar gum fracturing fluid shows good gel-breaking performance under the action of breaking agent, and the recommended concentration of breaking agent is 300 ppm. At 90~120 °C, the degradation rate of the three types of TPAs can reach more than 65%, and it can be effectively carried into the wellbore during the fracturing fluid flowback stage to achieve the effect of removing the TPA in the fracture. (2) The results of the pressure-bearing performance of the TPA show that the two kinds of TPAs can quickly achieve the plugging effect after plugging start: the effect of ZD-2 (poly lactic-co-glycolic acid (PLGA)) particle-and-powder combined TPA on forming an effective temporary plugging accumulation body in fractures is better than that of ZD-1 (PLGA) pure powder. There are large pores between the particles, and the fracturing fluid can still flow through the pores, so the ZD-3 (a mixture of lactide and PLGA) granular temporary plugging agent cannot form an effective plugging. (3) The law of length of the temporary plugging accumulation body shows that the ZD-2 combined TPA has stronger plugging ability for medium-aperture simulated fracture pores, while the ZD-1 powder TPA has stronger plugging ability for small aperture simulated fracture pores, and the ZD-3 granular TPA should be avoided alone as far as possible. This study further enriches and improves the understanding of the mechanism of temporary plugging diverting fracturing fluid. Full article
(This article belongs to the Special Issue Preparation and Applications of Biodegradable Polymer Materials)
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Review

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27 pages, 8055 KiB  
Review
Dental Materials Applied to 3D and 4D Printing Technologies: A Review
by HongXin Cai, Xiaotong Xu, Xinyue Lu, Menghua Zhao, Qi Jia, Heng-Bo Jiang and Jae-Sung Kwon
Polymers 2023, 15(10), 2405; https://doi.org/10.3390/polym15102405 - 22 May 2023
Cited by 3 | Viewed by 4201
Abstract
As computer-aided design and computer-aided manufacturing (CAD/CAM) technologies have matured, three-dimensional (3D) printing materials suitable for dentistry have attracted considerable research interest, owing to their high efficiency and low cost for clinical treatment. Three-dimensional printing technology, also known as additive manufacturing, has developed [...] Read more.
As computer-aided design and computer-aided manufacturing (CAD/CAM) technologies have matured, three-dimensional (3D) printing materials suitable for dentistry have attracted considerable research interest, owing to their high efficiency and low cost for clinical treatment. Three-dimensional printing technology, also known as additive manufacturing, has developed rapidly over the last forty years, with gradual application in various fields from industry to dental sciences. Four-dimensional (4D) printing, defined as the fabrication of complex spontaneous structures that change over time in response to external stimuli in expected ways, includes the increasingly popular bioprinting. Existing 3D printing materials have varied characteristics and scopes of application; therefore, categorization is required. This review aims to classify, summarize, and discuss dental materials for 3D printing and 4D printing from a clinical perspective. Based on these, this review describes four major materials, i.e., polymers, metals, ceramics, and biomaterials. The manufacturing process of 3D printing and 4D printing materials, their characteristics, applicable printing technologies, and clinical application scope are described in detail. Furthermore, the development of composite materials for 3D printing is the main focus of future research, as combining multiple materials can improve the materials’ properties. Updates in material sciences play important roles in dentistry; hence, the emergence of newer materials are expected to promote further innovations in dentistry. Full article
(This article belongs to the Special Issue Preparation and Applications of Biodegradable Polymer Materials)
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