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Polymers
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Advances in Polymeric Electrospinning
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Advances in Polymeric Electrospinning

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

Deadline for manuscript submissions: closed (15 June 2022) | Viewed by 10015

Special Issue Editors

Dr. Sumit Sinha Ray

E-Mail Website
Guest Editor
1. Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, Delhi 110016, India
2. Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL 60607, USA
Interests: air/water filtration; thermal management of microelectronics; novel methodologies of nonwoven; electrochemical energy storage/generation; drug delivery
Prof. Dr. Suman Sinha Ray

E-Mail Website
Co-Guest Editor
Department of Mechanical and Industrial Engineering, University of Illinois Chicago, Chicago, IL 60607-7022, USA
Interests: nonwovens; electrospinning; solution blowing; melt blowing; advanced manufacturing; micro/nanoscale thermal-fluid; polymer and oxide materials; nano-structured materials; drug delivery; alternative energy; building science; acoustics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Electrospinning is a versatile technology to fabricate nanoscale architecture comprising polymeric fibers which boasts very high surface area to volume ratio, tortuous pathways, and a highly porous network. Such nanoarchitectures are extremely useful for environmental pollution mitigation involving air and water or provide alternate energy conversion routes to avoid fossil fuel dependency to curb environmental impacts. In recent years, electrospun nanofibers have opened up a plethora of options in their applications toward the environmental sectors. The demands of high-performance materials in a clean environment, personal protection from air/waterborne diseases, and cleaner energy production with minimal impact on nature have increased the attention to biofriendly approaches for such nanoarchitecture manufacturing. Electrospinning is indeed a fascinating process to invest our efforts in these directions.

Dr. Sumit Sinha Ray
Dr. Suman Sinha Ray
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

  • air filtration
  • water filtration
  • biopolymer
  • metal-air batteries
  • personal protective equipment
  • fuel cell
  • gas sensor and adsorption

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Related Special Issue

Published Papers (2 papers)

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Research

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12 pages, 6576 KiB  
Article
Optimization of the Spinneret Rotation Speed and Airflow Parameters for the Nozzleless Forcespinning of a Polymer Solution
by Josef Skrivanek, Pavel Holec, Ondrej Batka, Martin Bilek and Pavel Pokorny
Polymers 2022, 14(5), 1042; https://doi.org/10.3390/polym14051042 - 5 Mar 2022
Cited by 9 | Viewed by 2842
Abstract
This paper addresses the changing of the process parameters of nozzleless centrifugal spinning (forcespinning). The primary aim of this study was to determine the dependence of the final product on the dosing of the polymer, the rotation speed of the spinneret and the [...] Read more.
This paper addresses the changing of the process parameters of nozzleless centrifugal spinning (forcespinning). The primary aim of this study was to determine the dependence of the final product on the dosing of the polymer, the rotation speed of the spinneret and the airflow in order to determine the extent of the technological applicability of aqueous polyvinyl alcohol (PVA) and its modifications. PVA was chosen because it is a widely used polymeric solution with environmentally friendly properties and good biodegradability. It is used in the health care and food packaging sectors. The nanofibrous layers were produced by means of a mobile handheld spinning device of our own construction. This mobile application of the spinning machine has several limitations compared to stationary laboratory equipment, mainly due to dimensional limitations. The uniqueness of our device lies in the possibility of its actual use outside the laboratory. In addition to improved mobility, another exciting feature is the combination of nozzleless forcespinning and fiber application using airflow. Dosing, the rotation speed of the spinnerets and the targeted and controlled use of air comprise the fundamental technological parameters for many devices that operate on a centrifugal force system. The rotation rate of the spinnerets primarily affects the production of fibers and their quality, while the airflow acts as a fiber transport and drying medium. The quality of the fibers was evaluated following the preparation of a testing set for the fiber layers. The most suitable combinations of rotation speed and airflow were then used in subsequent experiments to determine the ideal settings for the device. The solution was then modified by reducing the concentration to 16% and adding a surfactant, thus leading to a reduction in the diameters of the resulting fibers. The nanofiber layers so produced were examined using a scanning electron microscope (SEM) in order to analyze the number of defects and to statistically evaluate the fiber diameters. Full article
(This article belongs to the Special Issue Advances in Polymeric Electrospinning)
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Review

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26 pages, 4861 KiB  
Review
Ultrafine PVDF Nanofibers for Filtration of Air-Borne Particulate Matters: A Comprehensive Review
by Ayishe Sanyal and Sumit Sinha-Ray
Polymers 2021, 13(11), 1864; https://doi.org/10.3390/polym13111864 - 3 Jun 2021
Cited by 42 | Viewed by 6193
Abstract
The ongoing global pandemic has bestowed high priority uponthe separation of air-borne particulate matters (PMs), aerosols, etc. using nonwoven fibrous materials, especially for face masks as a means of personal protection. Although spunbond or meltblown nonwoven materials are amongst the forerunners for polymer [...] Read more.
The ongoing global pandemic has bestowed high priority uponthe separation of air-borne particulate matters (PMs), aerosols, etc. using nonwoven fibrous materials, especially for face masks as a means of personal protection. Although spunbond or meltblown nonwoven materials are amongst the forerunners for polymer microfiber-based face mask or air filter development in mass scale, relatively new process of nonwoven manufacturing such as electrospinning is gaining a lot of momentum amongst the filter membrane manufacturers for its scalability of nanofiber-based filter membrane fabrication. There are several nanofiber-based face masks developing industries, which claim a very high efficiency in filtration of particulate matters (PM0.1–10) as well as other aerosols for their products. Polyvinylidene fluoride (PVDF), which is commonly known for its use of tactile sensors and energy harvesters, due to its piezoelectric property, is slowly gaining popularity among researchers and developers as an air filter material. Electrospun PVDF nanofibers can be as fine as 50 nm in mass scale, which allows the membrane to have large surface area compared to its volume, enhancing nanofiber–PM interaction. At the same time, the breathability index can be improved through these PVDF nanofiber membranes due to their architectural uniqueness that promotes slip flow around the fibers. The conductive nature of PVDF makes it advantageous as a promising electret filter allowing better capturing of ultrafine particles. This review aims to provide a comprehensive overview of such PVDF nanofiber-based filter membranes and their roles in air filtration, especially its application in filtrate of air-borne PMs. Full article
(This article belongs to the Special Issue Advances in Polymeric Electrospinning)
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