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Polymers
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Polyester-Based Materials: 3rd Edition
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Polyester-Based Materials: 3rd Edition

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

Deadline for manuscript submissions: 28 February 2026 | Viewed by 1820

Special Issue Editors

Dr. Raluca Nicoleta Darie-Nita

E-Mail Website
Guest Editor
Petru Poni Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania
Interests: reactive processing (natural and synthetic polymers); physico-chemical characterization of polymers and composites (rheological, mechanical, thermal, and surface properties); biodegradable polymers; applications of bio-based materials
Special Issues, Collections and Topics in MDPI journals
Dr. Maria Râpă

E-Mail Website
Guest Editor
Department of Metallic Materials Processing and Environment Engineering, National University of Science and Technology Politehnica Bucharest, Bucharest, Romania
Interests: microplastics; water pollutants; environmental protection; materials processing; materials characterization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Polyesters represent one of the most important classes of polymers, with an increased demand for them in the current market. In addition to the more well-known materials of polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and polycaprolactone (PCL), which are petroleum-derived polyesters, the versatility of ester linkage has increased the development of novel biobased polyesters and co-polyesters from renewable resources, with polylactic acid (PLA) and polyhydroxyalkanoates (PHAs) being the most competitive biodegradable polymers commercialized among them to date. Novel approaches are constantly being proposed to develop new sources for biobased polyesters for diverse applications, as well as to improve the properties of known polyesters and their resulting materials.

The current Special Issue invites original papers and reviews that report the most valuable discoveries concerning polyester-based materials. Insights into polyester functionalization, copolymerization, surface modification, or the use of a variety of additives or fillers in order to increase the development and performance of polyester-based materials in various industries, such as packaging, automotive, constructions, electronics, textile, or the medical field, are also welcome. Studies regarding environmental impacts and, in particular, the recyclability or (bio)degradation of the polyester-based materials can also be included in this Special Issue.

Dr. Raluca Nicoleta Darie-Nita
Dr. Maria Râpă
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

  • biobased polyesters
  • synthetic polyesters
  • additives
  • bio(degradation)
  • materials
  • characterization
  • applications

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Published Papers (2 papers)

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Research

20 pages, 3589 KB  
Article
Comparison of Different Aliphatic Polyester-Based Microparticles as Protein Delivery Systems
by Viktor Korzhikov-Vlakh, Ekaterina Sinitsyna, Mariia Stepanova, Evgenia Korzhikova-Vlakh and Tatiana Tennikova
Polymers 2025, 17(19), 2676; https://doi.org/10.3390/polym17192676 - 3 Oct 2025
Viewed by 298
Abstract
The utilization of encapsulated biopharmaceuticals, including peptides and proteins, has grown substantially in recent years. In this study, the influence of aliphatic polyester physicochemical properties, specifically crystallinity and hydrophobicity, on the development of protein-loaded microparticles was investigated. A series of polyesters, namely amorphous [...] Read more.
The utilization of encapsulated biopharmaceuticals, including peptides and proteins, has grown substantially in recent years. In this study, the influence of aliphatic polyester physicochemical properties, specifically crystallinity and hydrophobicity, on the development of protein-loaded microparticles was investigated. A series of polyesters, namely amorphous PDLLA and semicrystalline PLLA, PCL, and PPDL, were synthesized via chemical and enzymatic ring-opening polymerization. Bovine serum albumin (BSA)-loaded microparticles were fabricated using a water-in-oil-in-water (w/o/w) double emulsion solvent evaporation method. The size of microparticles obtained was determined by scanning electron microscopy and dynamic light scattering methods. The enzymatic degradation of the polymer microparticles was assessed through incubation in a lipase-containing buffer solution. BSA and α-chymotrypsin (ACHT) were used as model proteins for the preparation of encapsulated polymer microspheres and comparison of their characteristics and properties. Protein encapsulation efficacy, release rate, and enzyme activity retained after encapsulation were evaluated and compared for selected aliphatic polyesters. The release profiles were processed with the use of various mathematical models to reveal the possible mechanism(s) of protein release. Full article
(This article belongs to the Special Issue Polyester-Based Materials: 3rd Edition)
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18 pages, 2518 KB  
Article
Injectable PEG-PCL-PEG Copolymers for Skin Rejuvenation: In Vitro Cell Studies to in Vivo Collagen Induction
by Seunghwa Lee, Aram Kim, Jimo Koo, Yunsik Kim, Sunglim Choi and Jin Cheol Cho
Polymers 2025, 17(14), 1892; https://doi.org/10.3390/polym17141892 - 8 Jul 2025
Viewed by 1034
Abstract
In this study, we designed an injectable skin-rejuvenating formulation based on polyethylene glycol–polycaprolactone–polyethylene glycol (PEG-PCL-PEG) copolymers to provide a synergistic combination of biocompatibility, antioxidative capacity, and regenerative potential. Through the systematic optimization of the precursor molar ratio and molecular weight, well-defined PEG-PCL-PEG copolymers [...] Read more.
In this study, we designed an injectable skin-rejuvenating formulation based on polyethylene glycol–polycaprolactone–polyethylene glycol (PEG-PCL-PEG) copolymers to provide a synergistic combination of biocompatibility, antioxidative capacity, and regenerative potential. Through the systematic optimization of the precursor molar ratio and molecular weight, well-defined PEG-PCL-PEG copolymers were synthesized and structurally characterized using gel permeation chromatography (GPC), proton nuclear magnetic resonance (1H-NMR), and Fourier transform infrared (FT-IR) spectroscopy. An optimized precipitation and drying protocol effectively reduced residual solvents, as confirmed by gas chromatography (GC). Idebenone was incorporated as an antioxidant to prevent skin aging, while hyaluronic acid (HA), L-arginine, and glycerin were included to promote collagen regeneration. In vitro assays demonstrated that idebenone-loaded samples exhibited prolonged intracellular antioxidant activity with low cytotoxicity. The collagen-promoting formulation, containing HA, glycerin, and L-arginine, enhanced the expression of transforming growth factor-β (TGF-β) and type III collagen (COL3) while suppressing inflammatory genes, suggesting a favorable environment for extracellular matrix remodeling. In vivo evaluation corroborated these outcomes, showing angiogenesis, collagen reorganization, and progressive dermal thickness. Histological analysis further confirmed sustained matrix regeneration and tissue integration. These results highlight the potential of PEG-PCL-PEG-based injectables as a multifunctional platform for collagen regeneration, offering a promising strategy for both cosmetic and clinical applications. Full article
(This article belongs to the Special Issue Polyester-Based Materials: 3rd Edition)
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