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Polymers
Special Issues
Electrostatic Spinning Micro and Nano Fibers
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Electrostatic Spinning Micro and Nano Fibers

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

Deadline for manuscript submissions: closed (5 May 2023) | Viewed by 7595

Special Issue Editors

Dr. Wenling Jiao

E-Mail Website
Guest Editor
Key Laboratory of Textile Science & Technology, College of Textiles, Donghua University, Shanghai 201620, China
Interests: functional fiber materials; microstructural analysis; environmental protection; energy harvesting and storage
Special Issues, Collections and Topics in MDPI journals
Dr. Jiangqi Zhao

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Sichuan University, Chengdu, China
Interests: biomass materials; electrospinning; energy storage materials; flexible batteries; biosensors; wearable devices
Prof. Dr. Subramanian Sundarrajan

E-Mail Website
Guest Editor
Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
Interests: electrospun nanofibrous membranes; water filtration applications; water treatment applications; air filtration; emerging filtration, detection, and treatment of viruses such as COVID-19
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Electrospinning evolved as a practical, applicable, versatile, high-potential and simple technology to produce nano- to micro-scale fibers offering significant advantages due to their extremely high surface-to-volume ratio, high porosity and easy functional design. Recent years have witnessed tremendous progress in the field, driven mostly by innovative electrospinning systems and the design of functional micro/nanofibers. Polymeric fibers have been prepared via solution electrospinning, emulsion electrospinning, suspension electrospinning and in situ cross-linking electrospinning; through the use of the use of these varied methods, the viscosity of the spinning solution can be adjusted, the mechanical stability of weak and water-soluble polymers can be enhanced, etc. Further the water soluble polymers are processed through green electrospinning process and other methods and finally made insoluble in water by various methods. The most recently developed electrospinning methods, such as multi-jet, needleless, bubble, centrifuge and electro-centrifuge systems, ensure a high production rate of micro- and nanofibers. Moreover, the design of novel nanocomposites and the morphological control of fibrous structures have been of interest for the development of applications of electrospun micro/nanofibers. At present, electrostatically spun fibers are widely used in many fields, such as biomedicine (e.g., tissue engineering scaffolds, skin, poly (lactic-co-glycolic acid) (PLGA) sutures, bone, cartilage, neural tissues, muscles, drug delivery and release control, blood vessels, wound healing, enzyme carriers), environmental protection (e.g., filtration, metal ion adsorption), energy harvesting and storage (e.g., solar cells, fuel cells, lithium ion batteries, mechanical energy harvesters, sensors, catalysts and flexible wearables). However, intense research work over the years has indicated that the mechanical properties of electrospun micro/nanofibers needed to be further improved to meet the requirements of practical applications.

Given their importance, this Special Issue of Polymers invites contributions addressing all aspects of electrospun micro/nanofibers using experiments or theoretical simulations; these aspects may include innovative electrospinning technology, the optimization of micro/nanofiber mechanical properties, and potential applications of electrospun polymeric fibers. We warmly welcome original research works and review articles on the electrospinning of micro/nanofibers from experts and scholars worldwide.

Dr. Wenling Jiao
Dr. Jiangqi Zhao
Prof. Dr. Subramanian Sundarrajan
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 and nanocomposites
  • state-of-the-art electrospinning methods
  • optimization of electrospun fiber properties
  • various applications of electrospun fiber materials

Published Papers (4 papers)

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Research

16 pages, 7941 KiB  
Article
Biodegradable Polycaprolactone Fibers with Silica Aerogel and Nanosilver Particles Produce a Coagulation Effect
by Büşra Şengel Ayvazoğlu, Muhammet Ceylan, Aybüke A. Isbir Turan and Elif Burcu Yılmaz
Polymers 2023, 15(9), 2022; https://doi.org/10.3390/polym15092022 - 24 Apr 2023
Cited by 3 | Viewed by 1433
Abstract
Poly-ε-caprolactone (PCL) is a biodegradable aliphatic polyester that can be used in the field of biomaterials. Electrospinning is the name given to the process of producing micro and nanoscale fibers using electrostatically charged polymeric solutions under certain conditions. Almost all synthetic and naturally [...] Read more.
Poly-ε-caprolactone (PCL) is a biodegradable aliphatic polyester that can be used in the field of biomaterials. Electrospinning is the name given to the process of producing micro and nanoscale fibers using electrostatically charged polymeric solutions under certain conditions. Almost all synthetic and naturally occurring polymers can undergo electrospinning using suitable solvents or mixtures prepared in certain proportions. In this study, silica aerogels were obtained by the sol-gel method. PCL-silica aerogel fibers were synthesized by adding 0.5, 1, 2, and 4% ratios in the PCL solution. Blood contact analysis was performed on the produced fibers with UV-VIS. According to the results obtained, 0.5, 1, 2, and 4% nano-silver were added to the fiber-containing 4% aerogel. Then, SEM-EDS and FTIR analyses were performed on all fibers produced. Antimicrobial tests were performed on fibers containing nano-silver. As a result, high-performance blood coagulation fibers were developed using PCL with aerogel, and an antimicrobial effect was achieved with nano-silver particles. It is thought that the designed surface will be preferred in wound dressing and biomaterial in tissue engineering, as it provides a high amount of cell adhesion with a small amount of blood and contains antimicrobial properties. Full article
(This article belongs to the Special Issue Electrostatic Spinning Micro and Nano Fibers)
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10 pages, 3210 KiB  
Article
Preparation and Characterization of Electrospun PAN-CuCl2 Composite Nanofiber Membranes with a Special Net Structure for High-Performance Air Filters
by Shiqian Hu, Zida Zheng, Ye Tian, Huihong Zhang, Mao Wang, Zhongwei Yu and Xiaowei Zhang
Polymers 2022, 14(20), 4387; https://doi.org/10.3390/polym14204387 - 18 Oct 2022
Cited by 3 | Viewed by 1594
Abstract
The growing issue of particulate matter (PM) air pollution has given rise to extensive research into the development of high-performance air filters recently. As the core of air filters, various types of electrospun nanofiber membranes have been fabricated and developed. With the novel [...] Read more.
The growing issue of particulate matter (PM) air pollution has given rise to extensive research into the development of high-performance air filters recently. As the core of air filters, various types of electrospun nanofiber membranes have been fabricated and developed. With the novel poly(acrylonitrile) (PAN)-CuCl2 composite nanofiber membranes as the filter membranes, we demonstrate the high PM removal efficiency exceeding 99% and can last a long service time. The nanoscale morphological characteristics of nanofiber membranes were investigated by scanning electron microscopy, transmission electron microscopy, and mercury intrusion porosimeter. It is found that they appear to have a special net structure at specific CuCl2 concentrations, which substantially improves PM removal efficiency. We anticipate the PAN-CuCl2 composite nanofiber membranes will be expected to effectively solve some pressing problems in air filtration. Full article
(This article belongs to the Special Issue Electrostatic Spinning Micro and Nano Fibers)
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11 pages, 4276 KiB  
Article
Corona−Poled Porous Electrospun Films of Gram−Scale Y−Doped ZnO and PVDF Composites for Piezoelectric Nanogenerators
by Juan Yi, Yiheng Song, Shixian Zhang, Zhilong Cao, Chenjian Li and Chuanxi Xiong
Polymers 2022, 14(18), 3912; https://doi.org/10.3390/polym14183912 - 19 Sep 2022
Cited by 9 | Viewed by 2255
Abstract
For digging out eco−friendly and well−performed energy harvesters, piezoelectric nanogenerators are preferred owing to their effortless assembly. Corona−poling promotes output performance of either aligned or porous PVDF electrospun films and higher piezoelectric output was achieved by corona−poled porous PVDF electrospun films due to [...] Read more.
For digging out eco−friendly and well−performed energy harvesters, piezoelectric nanogenerators are preferred owing to their effortless assembly. Corona−poling promotes output performance of either aligned or porous PVDF electrospun films and higher piezoelectric output was achieved by corona−poled porous PVDF electrospun films due to more poled electret dipoles in pores. Increasing the duration of electrospinning rendered more electret dipoles in PVDF porous electrospun films, resulting in higher piezoelectric output. Moreover, corona−poled PVDF/Y−ZnO porous electrospun films performed better than corona−poled PVDF/ZnO porous electrospun films because of the larger polar crystal face of Y−ZnO. Flexible piezoelectric polymer PVDF and high−piezoelectric Y−ZnO complement each other in electrospun films. With 15 wt% of Y−ZnO, corona−poled PVDF/Y−ZnO porous electrospun films generated maximum power density of 3.6 μW/cm2, which is 18 times that of PVDF/BiCl3 electrospun films. Full article
(This article belongs to the Special Issue Electrostatic Spinning Micro and Nano Fibers)
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14 pages, 5356 KiB  
Article
Increase the Surface PANI Occupancy of Electrospun PMMA/PANI Fibers: Effect of the Electrospinning Parameters on Surface Segregation
by Chen Qu, Peng Zhao, Yifan Ren, Chuandong Wu and Jiemin Liu
Polymers 2022, 14(16), 3401; https://doi.org/10.3390/polym14163401 - 19 Aug 2022
Cited by 2 | Viewed by 1757
Abstract
For preparing high-performance electrospun fibers with functional molecules that cannot cross-entangle themselves, such as conductive polymers, promoting the aggregation of functional molecules on the surface by surface segregation is a promising approach. In the present study, electrospun polymethyl methacrylate/polyaniline (PMMA/PANI) fibers were prepared [...] Read more.
For preparing high-performance electrospun fibers with functional molecules that cannot cross-entangle themselves, such as conductive polymers, promoting the aggregation of functional molecules on the surface by surface segregation is a promising approach. In the present study, electrospun polymethyl methacrylate/polyaniline (PMMA/PANI) fibers were prepared under various conditions, including solution composition, applied voltage, tip-to-collector distance, temperature, humidity, and gas-phase solvent concentration, to examine the effects of the parameters on fiber morphology and surface segregation. The changes in fiber morphology and variations in the intensity of PANI and PMMA’s characteristic bands were investigated with scanning electron microscopy (SEM) and Raman spectroscopy. The results demonstrated that by changing the saturation difference and the viscosity, the amount of PMMA and PANI added significantly influenced whether surface segregation could occur. The effect of other investigated parameters on surface segregation was concluded to alter the molecular migratable time by affecting the jet flight time and the solvent volatilization rate. Among them, increasing the solvent concentration could significantly promote surface segregation without sacrificing morphological advantages. When the solvent concentration increased from 1.4 to 158 mg/m3, the Raman peak intensity ratio of PANI and PMMA increased from 2.91 to 5.05, while the fiber diameter remained essentially constant. Full article
(This article belongs to the Special Issue Electrostatic Spinning Micro and Nano Fibers)
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