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Polymers
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Preparation of Polymer Materials via Electrospinning Technology
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Preparation of Polymer Materials via Electrospinning Technology

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Processing and Engineering".

Deadline for manuscript submissions: closed (31 December 2024) | Viewed by 1064

Special Issue Editor

Dr. Haijun He

E-Mail Website
Guest Editor
Engineering Research Center for Knitting Technology, Ministry of Education, Jiangnan University, Wuxi, China
Interests: polymer processing; polymer materials; nanocomposites; electrospinning; smart wearables; piezoelectric materials

Special Issue Information

Dear Colleagues,

Electrospinning has gained an important place in producing nanofibers from polymer materials in the world due to its low costs and simple setup. The technology also provides nanofibers for a broad range of industrial applications in the fields of filtration, composites, medical applications, energy generation and storage, etc. Additionally, there are lots of electrospinning methods which are developed to prepare nanofiber with tailored properties.

This Special Issue of the open-access journal Polymers aims to collect cutting-edge original research papers and reviews on but not limited to the following topics:

  • Electrospinning technology;
  • Nanofiber characterization;
  • Nanofibers for filtration;
  • Nanofibers for composites;
  • Nanofibers for medical application;
  • Nanofibers for energy generation and storage;
  • Nanofibers for wearables.

Dr. Haijun He
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

  • electrospinning
  • nanofibers
  • high-throughput
  • characterization
  • filtration
  • composites
  • medical application
  • energy generation
  • wearables

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (1 paper)

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Research

20 pages, 8056 KiB  
Article
Methyl Gallate and Amoxicillin-Loaded Electrospun Poly(vinyl alcohol)/Chitosan Mats: Impact of Acetic Acid on Their Anti-Staphylococcus aureus Activity
by Pimsumon Jiamboonsri, Weradesh Sangkhun and Sompit Wanwong
Polymers 2025, 17(1), 7; https://doi.org/10.3390/polym17010007 - 24 Dec 2024
Viewed by 431
Abstract
Methyl gallate (MG), a natural phenolic compound, exhibits in vitro synergistic activity with amoxicillin (Amox) against methicillin-resistant Staphylococcus aureus (MRSA), a global health concern. This study developed electrospun nanofibers incorporating MG and Amox into a poly(vinyl alcohol) (PVA)/chitosan (CS) blend to target both [...] Read more.
Methyl gallate (MG), a natural phenolic compound, exhibits in vitro synergistic activity with amoxicillin (Amox) against methicillin-resistant Staphylococcus aureus (MRSA), a global health concern. This study developed electrospun nanofibers incorporating MG and Amox into a poly(vinyl alcohol) (PVA)/chitosan (CS) blend to target both methicillin-susceptible S. aureus (MSSA) and MRSA. The formulation was optimized, and the impact of acetic acid on antibacterial activity was evaluated using agar disc diffusion. The final formulation was fabricated and characterized using SEM, FTIR, DSC, swelling, and release behavior analyses to understand its antibacterial efficacy. Results revealed that acetic acid eliminated antibacterial activity, but MG (64 mg/mL) and Amox (2.5 mg/mL) were successfully incorporated into a PVA/CS solution prepared with deionized water. The resulting nanofiber mats featured nanoscale fibers (126 ± 45 nm) with and micron-oval beads. Despite the in vitro synergism, the MG/Amox/PVA/CS mats showed no significant improvement over MG or Amox alone against MRSA, likely due to their physicochemical properties. FTIR and DSC results confirmed molecular interactions between the active compounds and the polymer matrix, which may cause a minimal swelling and low drug release at 24 h. This study offers insights into the potential of MG/Amox-loaded nanofibers for anti-MRSA material development. Full article
(This article belongs to the Special Issue Preparation of Polymer Materials via Electrospinning Technology)
►▼ Show Figures

Figure 1

Figure 1
<p>Schematic illustrations showing the electrospinning method to fabricate MG/Amox/PVA/CS nanofibers.</p> Full article ">Figure 2
<p>(<b>a</b>) Images of the electrospun nanofiber mat fabricated under optimization conditions with acetic acid conditions (formulation set A) and (<b>b</b>) their antibacterial activities compared with neat PVA and PVA/CS against <span class="html-italic">S. aureus</span> ATCC 25923 (MSSA) and 43300 (MRSA). Each symbol indicates the mean ± S.D. (<span class="html-italic">n</span> = 3). # The inhibition zone could not be determined. * Denotes a significant difference between the mean inhibition zones of the two bacterial strains (<span class="html-italic">p</span> &lt; 0.05).</p> Full article ">Figure 3
<p>(<b>a</b>) Images of the electrospun nanofiber mat fabricated under optimization conditions without acetic acid conditions (formulation set B) and (<b>b</b>) their antibacterial activities compared with neat PVA/CS against <span class="html-italic">S. aureus</span> ATCC 25923 (MSSA) and 43300 (MRSA). Each symbol indicates the mean ± S.D. (<span class="html-italic">n</span> = 3). # The inhibition zone could not be determined. ## A large and overlapping inhibition zone was observed.</p> Full article ">Figure 4
<p>(<b>a</b>) Images of the electrospun nanofiber mat and (<b>b</b>) the antibacterial activities of the formulation set C; 64 mg MG/PVA/CS, 25 mg Amox/PVA/CS, and 64 mg MG/25 mg Amox/PVA/CS nanofiber mats, compared with neat PVA and PVA/CS against <span class="html-italic">S. aureus</span> ATCC 25923 (MSSA) and 43300 (MRSA). Each symbol indicates the mean ± S.D. (<span class="html-italic">n</span> = 3). # The inhibition zone could not be determined. * Significant difference between the mean inhibition zones of the two bacterial strains, <span class="html-italic">p</span> &lt; 0.05.</p> Full article ">Figure 5
<p>SEM images of fabricated mats from formulation set C: (<b>a</b>) PVA, (<b>b</b>) PVA/CS, (<b>c</b>) MG/PVA/CS, (<b>d</b>) Amox/PVA/CS, and (<b>e</b>) MG/Amox/PVA/CS.</p> Full article ">Figure 6
<p>FTIR spectra of PVA, PVA/CS, MG/PVA/CS, Amox/PVA/CS, and MG/Amox/PVA/CS nanofibers from formulation set C.</p> Full article ">Figure 7
<p>DSC thermograms of PVA, PVA/CS, MG/PVA/CS Amox/PVA/CS, and MG/Amox/PVA/CS nanofibers from formulation set C (heating rate 5 °C/min).</p> Full article ">Figure 8
<p>Percentage of swelling degree, weight loss, and water retention of PVA, PVA/CS, MG/PVA/CS, Amox/PVA/CS, and MG/Amox/PVA/CS nanofiber from formulation set C. Data shown as mean ± S.D. (<span class="html-italic">n</span> = 3).</p> Full article ">Figure 9
<p>The 24 h percentage release of MG and Amox from PVA/CS electrospun (formulation set C). Data shown as mean ± S.D. (<span class="html-italic">n</span> = 3). # The concentration of MG and Amox could not be determined.</p> Full article ">
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