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Polymers
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Electrospun Composite Nanofibers for Functional Applications II
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Electrospun Composite Nanofibers for Functional Applications II

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

Deadline for manuscript submissions: closed (31 March 2024) | Viewed by 9783

Special Issue Editors

Prof. Dr. Ick-Soo Kim

E-Mail Website
Guest Editor
Nano Fusion Technology Research Group, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan
Interests: nanofibers; electrospinning; bio-medical; sensors; carbon materials; food packing; nano-catalysis; supercapacitor; drug delivery
Special Issues, Collections and Topics in MDPI journals
Dr. Sana Ullah

E-Mail Website
Guest Editor
Nano Fusion Technology Research Group, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Tokida 3-15-1, Ueda 386-8567, Nagano, Japan
Interests: nanofibers; electrospinning; polymers; biomaterials; biomedical; environmental; wound dressing; drug delivery; wastewater treatment; filtration; membranes; face masks; sensors
Special Issues, Collections and Topics in MDPI journals
Dr. Motahira Hashmi

E-Mail Website
Guest Editor
Nano Fusion Technology Research Group, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Tokida 3-15-1, Ueda 386-8567, Nagano, Japan
Interests: nanofibers; electrospinning; polymers; wound dressing; biomedical; drug delivery; antibacterial; antiviral; filtration; membranes; face masks
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Electrospun nanofibers have a wide range of applications covering almost every field of science and technology. Polymeric materials, either from a natural source or synthetic polymers, are the basis for such applications. However, researchers are still facing challenges in terms of the processing of complex polymers to transform into nanofibers to maximize their practical applicability. Considering the potential of polymeric nanofibers (produced by either technique) in biomedical, environmental, filtration, electronics, and other fields, it is vital for the researcher community to actively contribute to these areas. This Special Issue of Polymers MDPI on “Electrospun Composite Nanofibers for Functional Applications” will cover the abovementioned areas of electrospun nanofibers. Research relevant to recent advances in nanotechnology, especially electrospinning technology, to produce nanofibers with complex structures, unique characteristics, and potential in practical applications will be a priority for this Special Issue.

Prof. Dr. Ick-Soo Kim
Dr. Sana Ullah
Dr. Motahira Hashmi
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

  • polymers
  • biomaterials
  • nanomaterials
  • nanofibers
  • electrospinning
  • biomedical
  • drug delivery
  • filtration
  • membranes
  • face masks
  • sensors
  • food packaging

Published Papers (4 papers)

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Research

13 pages, 3790 KiB  
Article
Fabrication of Electrospun PVA/Zein/Gelatin Based Active Packaging for Quality Maintenance of Different Food Items
by Sana Ullah, Motahira Hashmi, Jian Shi and Ick Soo Kim
Polymers 2023, 15(11), 2538; https://doi.org/10.3390/polym15112538 - 31 May 2023
Cited by 4 | Viewed by 1826
Abstract
In this research, electrospun PVA/Zein/Gelatin based tri-component active food packaging has been fabricated to enhance the shelf life of food by assuring the food quality (freshness, taste, brittleness, color, etc.) for longer. Electrospinning imparts good morphological properties along with breathability in nanofibrous mats. [...] Read more.
In this research, electrospun PVA/Zein/Gelatin based tri-component active food packaging has been fabricated to enhance the shelf life of food by assuring the food quality (freshness, taste, brittleness, color, etc.) for longer. Electrospinning imparts good morphological properties along with breathability in nanofibrous mats. Electrospun active food packaging has been characterized to investigate the morphological, thermal, mechanical, chemical, antibacterial and antioxidant properties. Results of all tests indicated that the PVA/Zein/Gelatin nanofiber sheet possessed good morphology, thermal stability, mechanical strength, good antibacterial properties along with excellent antioxidant properties, which makes it the most suitable food packaging for increasing the shelf life of different food items like sweet potatoes, potatoes and kimchi. Shelf life of sweet potatoes and potatoes was observed for a period of 50 days, and shelf life of the kimchi was observed for a period of 30 days. It was concluded that nanofibrous food packaging may enhance the shelf life of fruit and vegetables because of their better breathability and antioxidant properties. Full article
(This article belongs to the Special Issue Electrospun Composite Nanofibers for Functional Applications II)
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20 pages, 6258 KiB  
Article
Core–Shell Polyvinyl Alcohol (PVA) Base Electrospinning Microfibers for Drug Delivery
by Sofía Mares-Bou, María-Antonia Serrano and José Antonio Gómez-Tejedor
Polymers 2023, 15(6), 1554; https://doi.org/10.3390/polym15061554 - 21 Mar 2023
Cited by 8 | Viewed by 2193
Abstract
In this study, electrospun membranes were developed for controlled drug release applications. Both uniaxial Polyvinyl alcohol (PVA) and coaxial fibers with a PVA core and a poly (L-lactic acid) (PLLA) and polycaprolactone (PCL) coating were produced with different coating structures. The best conditions [...] Read more.
In this study, electrospun membranes were developed for controlled drug release applications. Both uniaxial Polyvinyl alcohol (PVA) and coaxial fibers with a PVA core and a poly (L-lactic acid) (PLLA) and polycaprolactone (PCL) coating were produced with different coating structures. The best conditions for the manufacture of the fibers were also studied and their morphology was analyzed as a function of the electrospinning parameters. Special attention was paid to the fiber surface morphology of the coaxial fibers, obtaining both porous and non-porous coatings. Bovine serum albumin (BSA) was used as the model protein for the drug release studies and, as expected, the uncoated fibers were determined to have the fastest release kinetics. Different release rates were obtained for the coated fibers, which makes this drug release system suitable for different applications according to the release time required. Full article
(This article belongs to the Special Issue Electrospun Composite Nanofibers for Functional Applications II)
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16 pages, 3069 KiB  
Article
Black Tea Extracts/Polyvinyl Alcohol Active Nanofibers Electrospun Mats with Sustained Release of Polyphenols for Food Packaging Applications
by Lucía M. Quintero-Borregales, Alicia Vergara-Rubio, Ayelen Santos, Lucía Famá and Silvia Goyanes
Polymers 2023, 15(5), 1311; https://doi.org/10.3390/polym15051311 - 06 Mar 2023
Cited by 3 | Viewed by 2176
Abstract
The efficiency in the capabilities to store and release antioxidants depends on the film morphology and its manufacturing process, as well as on the type and methodology used to obtain the polyphenol extracts. Here, hydroalcoholic extracts of black tea polyphenols (BT) were obtained [...] Read more.
The efficiency in the capabilities to store and release antioxidants depends on the film morphology and its manufacturing process, as well as on the type and methodology used to obtain the polyphenol extracts. Here, hydroalcoholic extracts of black tea polyphenols (BT) were obtained and dropped onto different polyvinyl alcohol (PVA) aqueous solutions (water or BT aqueous extract with and without citric acid, CA) to obtain three unusual PVA electrospun mats containing polyphenol nanoparticles within their nanofibers. It was shown that the mat obtained through the nanoparticles precipitated in BT aqueous extract PVA solution presented the highest total polyphenol content and antioxidant activity, and that the addition of CA as an esterifier or PVA crosslinker interfered with the polyphenols. The release kinetics in different food simulants (hydrophilic, lipophilic and acidic) were fitted using Fick’s diffusion law and Peppas’ and Weibull’s models, showing that polymer chain relaxation is the main mechanism in all food simulants except for the acidic, which presented an abrupt release by Fick’s diffusion mechanism of about 60% before being controlled. This research provides a strategy for the development of promising controlled-release materials for active food packaging, mainly for hydrophilic and acidic food products. Full article
(This article belongs to the Special Issue Electrospun Composite Nanofibers for Functional Applications II)
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19 pages, 3595 KiB  
Article
Composition Effects on the Morphology of PVA/Chitosan Electrospun Nanofibers
by Gustavo Cardoso da Mata, Maria Sirlene Morais, Wanderley Pereira de Oliveira and Mônica Lopes Aguiar
Polymers 2022, 14(22), 4856; https://doi.org/10.3390/polym14224856 - 11 Nov 2022
Cited by 10 | Viewed by 2686
Abstract
Since the SARS-CoV-2 pandemic, the interest in applying nanofibers t air filtration and personal protective equipment has grown significantly. Due to their morphological and structural properties, nanofibers have potential applications for air filtration in masks and air filters. However, most nanofiber membrane materials [...] Read more.
Since the SARS-CoV-2 pandemic, the interest in applying nanofibers t air filtration and personal protective equipment has grown significantly. Due to their morphological and structural properties, nanofibers have potential applications for air filtration in masks and air filters. However, most nanofiber membrane materials used for these purposes are generally non-degradable materials, which can contribute to the disposal of plastic waste into the environment. Hence, this work aims to produce polyvinyl alcohol (PVA) and chitosan (CS) biodegradable nanofibers with controlled morphology and structure via electrospinning. An experimental design was used to investigate the effects of the PVA|CS ratio and concentration on the properties of the electrospinning compositions and electrospun nanofiber mat. The electrospinning parameters were constant for all experiments: Voltage of 20 kV, a feed rate of 0.5 mL·h−1, and a distance of 10 cm between the needle and a drum collector. CS proved to be an efficient adjuvant to the PVA’s electrospinning, obtaining a wide range of nanofiber diameters. Furthermore, 6.0% PVA and 1% CS were the best compositions after optimization with the response surface methodology, with a mean fiber diameter of 204 nm. The addition of biocide agents using the optimized condition was also investigated, using surfactants, citric acid, and pure and encapsulated essential oils of Lippia sidoides. Pure oil improved the material without enlarging the nanofiber sizes compared to the other additives. The nanofiber membranes produced have the potential to be used in air filtration or wound-dressing applications where biocidal activity is needed. Full article
(This article belongs to the Special Issue Electrospun Composite Nanofibers for Functional Applications II)
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