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Polymers
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Biodegradable Polymers in Sustainable and Biomedical Applications
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Biodegradable Polymers in Sustainable and Biomedical Applications

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Circular and Green Sustainable Polymer Science".

Deadline for manuscript submissions: 30 April 2025 | Viewed by 2675

Special Issue Editor

Prof. Dr. Suedina Maria de Lima Silva

E-Mail Website
Guest Editor
Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, PB, Brazil
Interests: polymers; polymeric nanocomposites; bionanocomposites; controlled drug release; polymeric biomaterials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue focuses on innovations in biodegradable polymers for sustainable and biomedical applications. Its goal is to explore the development of materials that are environmentally friendly and have functional properties for controlled drug delivery, wound healing, tissue engineering, and other biomedical applications. Advanced techniques for the synthesis, modification, and characterization of biopolymers will be addressed, as well as their applications in regenerative medicine and biomedical devices. This issue aims to bring together research that promotes the application of biopolymers in regenerative and environmentally sustainable medical solutions, combining therapeutic efficacy and sustainability. Original research and reviews will be considered.

Prof. Dr. Suedina Maria de Lima Silva
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

  • biodegradable polymers
  • controlled drug release
  • wound healing
  • tissue engineering
  • regenerative medicine
  • sustainable materials
  • biomaterials
  • biopolymer modification
  • biomedical devices
  • nanocomposites

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Published Papers (3 papers)

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Research

31 pages, 7462 KiB  
Article
How Molar Mass, Acid Type, and Coagulation Bath Composition Influence Coagulation Kinetics, Mechanical Properties, and Swelling Behavior of Chitosan Filaments: A Full Factorial Approach
by Henrique Nunes da Silva, Milena Costa da Silva Barbosa, Matheus Ferreira de Souza, Athirson Mikael de Sousa Lima, Rafaella Resende de Almeida Duarte, Rômulo Feitosa Navarro, Suédina Maria de Lima Silva and Marcus Vinícius Lia Fook
Polymers 2025, 17(7), 927; https://doi.org/10.3390/polym17070927 - 29 Mar 2025
Viewed by 286
Abstract
In this study, a full multilevel factorial design (21 × 31 × 21) × 2 was conducted to investigate the effects of molar mass of chitosan (CS), the type of acid used for dissolution, and the composition of the [...] Read more.
In this study, a full multilevel factorial design (21 × 31 × 21) × 2 was conducted to investigate the effects of molar mass of chitosan (CS), the type of acid used for dissolution, and the composition of the coagulation bath on the coagulation, mechanical properties, and swelling of the filaments. The results showed the statistical significance of the factors in the characteristics of these filaments. The coagulation followed Fick’s second law of diffusion, with an increase in the chitosan molar mass reducing the coagulation rate, as did the use of acetic acid instead of lactic acid. CS with higher molar mass produced filaments with larger diameters, but without a proportional increase in tensile strength. Swelling was influenced by the acid and composition of the coagulation bath. The interaction of CS with acid and the CS molar mass factor were the terms of greatest statistical significance. Crystallinity was higher for samples dissolved in aqueous solutions of acetic acid and coagulated with ethanol, while lactic acid induced greater structural disorder. Samples coagulated with ethanol presented more homogeneous surfaces, while methanol resulted in rougher filaments. These findings emphasize the critical role of processing conditions in tailoring the properties of CS filaments, providing valuable insights for their optimization for biomedical applications. Full article
(This article belongs to the Special Issue Biodegradable Polymers in Sustainable and Biomedical Applications)
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17 pages, 3514 KiB  
Article
A Numerical Study on the Drug Release Process of Biodegradable Polymer Drug-Loaded Vascular Stents
by Shiyong Li, Yunbo Wei and Hongxia Li
Polymers 2025, 17(3), 420; https://doi.org/10.3390/polym17030420 - 5 Feb 2025
Viewed by 748
Abstract
Biodegradable polymer drug-loaded vascular stents are a typical and promising application in the field of invasive interventional therapy. The drug release process of drug-loaded vascular stents, as well as the drug concentration in the vascular wall and its change process, will affect the [...] Read more.
Biodegradable polymer drug-loaded vascular stents are a typical and promising application in the field of invasive interventional therapy. The drug release process of drug-loaded vascular stents, as well as the drug concentration in the vascular wall and its change process, will affect the therapeutic effect of vascular stents on vascular stenosis. As a drug carrier, the degradation properties of the polymer will affect the drug release process. In this study, the drug release process from the biodegradable polymer stent and the drug delivery process in vascular lumens and intravascular walls were studied by using 3D finite element method, with the effect of the biodegradation behavior of polymer on the drug release process being considered. The effects of the initial drug concentration, stent geometry, and polymer degradation rate on the drug release and delivery process were investigated. The results showed that the initial drug concentration and the thickness of the polymer stent significantly affected the drug concentration in the middle layer of the vessel wall, but the initial drug concentration had no effect on the drug release duration. The degradation of the polymer causes its porosity to change with time, which affects the drug diffusion in polymer, and further affects the drug concentration in the vessel wall. The three-dimensional structure of the stent can affect the blood flow in the blood vessel, resulting in drug deposition near the struts, especially near the intersection of the support struts and the bridge struts. Full article
(This article belongs to the Special Issue Biodegradable Polymers in Sustainable and Biomedical Applications)
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18 pages, 5236 KiB  
Article
Highly Porous 3D Nanofibrous Scaffold of Polylactic Acid/Polyethylene Glycol/Calcium Phosphate for Bone Regeneration by a Two-Step Solution Blow Spinning (SBS) Facile Route
by Vanderlane Cavalcanti da Silva, Déborah dos Santos Gomes, Eudes Leonan Gomes de Medeiros, Adillys Marcelo da Cunha Santos, Isabela Lemos de Lima, Taciane Pedrosa Rosa, Flaviana Soares Rocha, Leticia de Souza Castro Filice, Gelmires de Araújo Neves and Romualdo Rodrigues Menezes
Polymers 2024, 16(21), 3041; https://doi.org/10.3390/polym16213041 - 29 Oct 2024
Cited by 2 | Viewed by 1159
Abstract
This work presents the successful production of highly porous 3D nanofibrous hybrid scaffolds of polylactic acid (PLA)/polyethylene glycol (PEG) blends with the incorporation of calcium phosphate (CaP) bioceramics by a facile two-step process using the solution blow spinning (SBS) technique. CaP nanofibers were [...] Read more.
This work presents the successful production of highly porous 3D nanofibrous hybrid scaffolds of polylactic acid (PLA)/polyethylene glycol (PEG) blends with the incorporation of calcium phosphate (CaP) bioceramics by a facile two-step process using the solution blow spinning (SBS) technique. CaP nanofibers were obtained at two calcium/phosphorus (Ca/P) ratios, 1.67 and 1.1, by SBS and calcination at 1000 °C. They were incorporated in PLA/PEG blends by SBS at 10 and 20 wt% to form 3D hybrid cotton-wool-like scaffolds. Morphological analysis showed that the fibrous scaffolds obtained had a randomly interconnected and highly porous structure. Also, the mean fiber diameter ranged from 408 ± 141 nm to 893 ± 496 nm. Apatite deposited considerably within 14 days in a simulated body fluid (SBF) test for hybrid scaffolds containing a mix of hydroxyapatite (HAp) and tri-calcium phosphate-β (β-TCP) phases. The scaffolds with 20 wt% CaP and a Ca/P ration of 1.1 showed better in vitro bioactivity to induce calcium mineralization for bone regeneration. Cellular tests evidenced that the developed scaffolds can support the osteogenic differentiation and proliferation of pre-osteoblastic MC3T3-E1 cells into mature osteoblasts. The results showed that the developed 3D scaffolds have potential applications for bone tissue engineering. Full article
(This article belongs to the Special Issue Biodegradable Polymers in Sustainable and Biomedical Applications)
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