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Polymers
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Tailored Electrospun Polymer Fibers: Innovation, Characterization, and Application Trends
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Tailored Electrospun Polymer Fibers: Innovation, Characterization, and Application Trends

A Special Issue of Polymers (ISSN 2073-4360) belonging to the section "Polymer Fibers".

Deadline for manuscript submissions: closed (31 August 2026) | Viewed by 2071

Editor

Prof. Dr. Husam Younes

E-Mail Website
Guest Editor
Tissue Engineering and Nanopharmaceuticals Research Laboratory, Biomedical Research Center, Medical and Health Education, Qatar University, Doha, Qatar
Interests: biomaterials; photopolymerization; electrospinning; 3D printing; protein drug delivery; tissue engineering; controlled release; biopharmaceutics; pharmacokinetics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Electrospinning technology is gaining more attention for the flexible and large-scale production of fibers made from polymers due to its ability to precisely control the diameter size, surface characteristics, and other functionalities of the fibers. Advancements in these fibers allow the production of advanced drug delivery systems, their use in tissue engineering, and sophisticated wound healing techniques; furthermore, they are also applied in filtration, energy storage devices, and smart textiles.

This Special Issue aims to collect all the modern approaches and research studies on the synthesis and modification of polymeric fibers, particularly focusing on their mechanical, thermal, and biological behavior. It will also cover the engineering and design aspects of the polymers. We hope to receive original research articles, comprehensive reviews, and short communications on advanced materials, fiber-hybrid or composite systems, and new electrospinning methods, such as coaxial, melt, and reactive electrospinning. We would especially appreciate the contributions outlining in vitro and in vivo outcomes, scaled-up development, and the incorporation of the products into biomedical or industrial devices. Submissions should focus on polymer-based electrospun systems from a scientific and engineering perspective.

Prof. Dr. Husam Younes
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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized 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

  • electrospinning
  • polymeric nanofibers
  • fiber characterization
  • functional materials
  • biomedical applications
  • advanced drug delivery
  • tissue engineering scaffolds

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Published Papers (2 papers)

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Research

15 pages, 3418 KB  
Article
Effects of α- and β-Chitin on the Mechanical Properties and Molecular Interactions of Electrospun PLLA Nanofibers
by Seunghwan Choy
Polymers 2026, 18(17), 2127; https://doi.org/10.3390/polym18172127 - 31 Aug 2026
Viewed by 232
Abstract
Poly(L-lactic acid) (PLLA) nanofibers are promising materials for biomedical and packaging applications; however, their inherent brittleness limits applications requiring both stiffness and ductility. Here, α- and β-chitin, differing in molecular packing and hydrogen-bonding characteristics, were incorporated into electrospun PLLA nanofibers at a PLLA/chitin [...] Read more.
Poly(L-lactic acid) (PLLA) nanofibers are promising materials for biomedical and packaging applications; however, their inherent brittleness limits applications requiring both stiffness and ductility. Here, α- and β-chitin, differing in molecular packing and hydrogen-bonding characteristics, were incorporated into electrospun PLLA nanofibers at a PLLA/chitin mass ratio of 10:1. Both chitin types enhanced the mechanical properties of PLLA, increasing tensile strength by 1.4- and 1.6-fold and Young’s modulus to 83.7 and 79.7 MPa for PLLA/α-chitin and PLLA/β-chitin, respectively. PLLA/α-chitin exhibited higher yield strength and more uniform fiber morphology, whereas PLLA/β-chitin showed substantially greater ductility and toughness with pronounced necking behavior. Thermal, spectroscopic, and diffraction analyses revealed distinct structural responses associated with the two chitin forms. α-Chitin produced a constrained hydrogen-bonded environment that restricted PLLA chain mobility. In contrast, β-chitin preserved greater chain mobility and promoted a more heterogeneous local molecular environment. Despite its lower overall crystallinity, PLLA/β-chitin exhibited a distinct secondary melting feature, suggesting localized chain organization and a limited nucleation effect rather than enhanced bulk crystallization. These findings demonstrate that chitin structure provides a practical design parameter for balancing stiffness and toughness in PLLA nanofiber composites, broadening their potential applications in the biomedical and packaging fields. Full article
(This article belongs to the Special Issue Tailored Electrospun Polymer Fibers: Innovation, Characterization, and Application Trends)
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25 pages, 7128 KB  
Article
Quantitative Mechanophysical Correlations Governing Antibacterial Performance of Amoxicillin-Loaded Poly(ε-caprolactone)/Poly(ethylene glycol) Biodegradable Electrospun Nanofibrous Wound Dressing
by Husam M. Younes, Sandi Ali Adib, Mai Salama, Hala Adel, Sarah Ghanim, Samaher Alshaibi, Hana Kadavil, Gheyath K. Nasrallah, Dana Elkhalifa and Aya Al Shammaa
Polymers 2026, 18(4), 449; https://doi.org/10.3390/polym18040449 - 10 Feb 2026
Cited by 2 | Viewed by 1296
Abstract
Biodegradable electrospun nanofibrous scaffolds (BENS) have emerged as a highly advanced class of wound dressings owing to their close structural and morphological resemblance to the native extracellular matrix and their tunable physicochemical and mechanical characteristics. However, the successful translation of electrospun wound-healing platforms [...] Read more.
Biodegradable electrospun nanofibrous scaffolds (BENS) have emerged as a highly advanced class of wound dressings owing to their close structural and morphological resemblance to the native extracellular matrix and their tunable physicochemical and mechanical characteristics. However, the successful translation of electrospun wound-healing platforms from laboratory concepts to clinically viable products necessitates a quantitative understanding of how formulation and processing variables dictate scaffold architecture, mechanical performance, and antibacterial functionality. In this study, hydrophobic poly(ε-caprolactone) (PCL) and hydrophilic poly(ethylene glycol) (PEG35000) were blended at different weight ratios and fabricated into electrospun nanofibrous scaffolds, with amoxicillin trihydrate (AMX) incorporated as a model antibacterial agent. Blank and drug-loaded systems were systematically characterized with respect to solution rheology, fiber morphology, thermal behavior, crystallinity, mechanical performance, surface wettability, and antibacterial activity. Quantitative correlation analyses and statistical comparisons revealed that solution viscosity is a strong predictor of mechanical response, while PEG fraction governs baseline stiffness and crystallinity in a non-linear manner. AMX loading acted as a secondary structural modifier, producing statistically significant increases in stiffness and wettability, accompanied by reduced crystallinity and concentration-dependent antibacterial efficacy. Among the investigated formulations, a PCL: PEG ratio of 3:1 provided the most balanced mechanophysical profile for effective drug incorporation. These findings establish validated structure–property–function relationships that support the rational design of electrospun antibacterial wound dressings. Full article
(This article belongs to the Special Issue Tailored Electrospun Polymer Fibers: Innovation, Characterization, and Application Trends)
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