Special Issue "Fibers 10th Anniversary: Past, Present, and Future"

A special issue of Fibers (ISSN 2079-6439).

Deadline for manuscript submissions: 31 December 2023 | Viewed by 7288

Special Issue Editors

Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
Interests: mechanical behavior of fibers and fiber network materials; nonwovens; polymeric networks; mechanics of molecular crystals
Departments of Forest Biomaterials, Chemistry, North Carolina State University, Raleigh, NC 27695, USA
Interests: green chemistry; smart biopolymeric materials; self-healing phenomena; drug delivery approaches; tissue engineering scaffolds; hydrogels
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Special Issue Information

Dear Colleagues,

The year 2023 marks the 10th year of the journal Fibers, and we invite you to join us in celebrating its anniversary. To this end, the journal will publish an anniversary Special Issue, “Fibers 10th Anniversary: Past, Present, and Future”. We invite you to submit an original article reflecting your latest work related to fiber research. We also welcome reviews of past and current research, and future perspectives. Editors, authors, and reviewers who have made contributions to Fibers are particularly invited to contribute. Topics of interest include, but are not limited to: fiber and fiber-based materials’ properties, the design of fibrous materials, biocompatibility, toxicology and environmental safety, and the processing of fibers and any aspect of fibrous materials.

Fibers released its inaugural issue in 2013, with the founding Editor-in-Chief Prof. Dr. Stephen C. Bondy. Fibers was indexed in the Emerging Sources Citation Index, Web of Science (Clarivate Analytics) and Scopus, Elsevier in 2015 and 2017, respectively, and received its first CiteScore of 2.5 in 2018. In the same year, we welcomed our new Editor-in-Chief, Prof. Dr. Martin J. D. Clift. By the end of 2022, Fibers published more than 600 high-quality original articles, which is reflected in its current CiteScore rising to 6.5 (Q1 in Civil and Structural Engineering). The journal has more than 100 Editorial Board Members and over 1300 reviewers.

Prof. Dr. Catalin R. Picu
Prof. Dr. Lucian Lucia
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. Fibers is an international peer-reviewed open access monthly 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 1600 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

  • polymer fibers
  • carbon fibers
  • nanofibers
  • optical fibers
  • glass fibers
  • nanotubes
  • plant fibers
  • cellulose
  • animal fibers
  • mineral fibers
  • synthetic fibers
  • textile fibers
  • fibers reinforcement
  • fibers preparation, origins, processing
  • fibers treatment, modification
  • fibers structure, properties, toxicology
  • fibers application
  • other topics and technologies related to fibers

Published Papers (7 papers)

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Research

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Article
The Production of Ultra-Thin Polyethylene-Based Carbon Fibers out of an “Islands-in-the-Sea” (INS) Precursor
Fibers 2023, 11(9), 75; https://doi.org/10.3390/fib11090075 - 08 Sep 2023
Viewed by 274
Abstract
Carbon fibers (CF) and their composites (CC) are one of the world’s most promising and avant-garde high-performance materials, as they combine excellent mechanical characteristics with high weight reduction potential. Polyethylene (PE) is the perfect alternative precursor for CF as it combines widespread availability, [...] Read more.
Carbon fibers (CF) and their composites (CC) are one of the world’s most promising and avant-garde high-performance materials, as they combine excellent mechanical characteristics with high weight reduction potential. Polyethylene (PE) is the perfect alternative precursor for CF as it combines widespread availability, low cost, high carbon content, and, most importantly, precursor fibers that can be produced via melt-spinning. PE-based CF production involves a challenging and time-consuming diffusion-limited chemical stabilization step. The work presented in this article tackles the challenge of reducing the chemical stabilization process time by converting a bicomponent island-in-the-sea fiber, consisting of PA6 as sea matrix and HDPE as island material, into an ultra-thin PE-precursor fiber. The produced precursor fiber is then successfully converted into an ultra-thin PE-based CF through sulfonation and subsequent carbonization in a continuous set-up. The resulting CF has a smooth surface with no observable surface defects and a filament diameter of around 3 µm. The successful conversion to ultra-thin CF is shown in both batch and continuous processes. Additionally, a reduction in sulfonation reaction time from 4 h to 3 h is achieved. Full article
(This article belongs to the Special Issue Fibers 10th Anniversary: Past, Present, and Future)
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Article
Controllable Water-Triggered Degradation of PCL Solution-Blown Nanofibrous Webs Made Possible by Lipase Enzyme Entrapment
Fibers 2023, 11(6), 49; https://doi.org/10.3390/fib11060049 - 01 Jun 2023
Viewed by 1025
Abstract
Polymers in nanofibrous forms offer new opportunities for achieving triggered polymer degradation, which is important for functional and environmental reasons. The polycaprolactone (PCL) nanofibrous nonwoven polymer webs developed in this work by solution blow spinning with entrapped enzymes were completely, rapidly and controllably [...] Read more.
Polymers in nanofibrous forms offer new opportunities for achieving triggered polymer degradation, which is important for functional and environmental reasons. The polycaprolactone (PCL) nanofibrous nonwoven polymer webs developed in this work by solution blow spinning with entrapped enzymes were completely, rapidly and controllably degraded when triggered by exposure to water. Lipase (CALB) from Candida antarctica was successfully entrapped in the PCL webs via an enzyme-compatible water-in-oil emulsion in the PCL–chloroform spinning solution with added surfactant. Protein (enzyme) in the nanofibrous webs was detected by Fourier Transform Infrared Spectroscopy (FTIR), while time of flight-secondary ion mass spectroscopy (ToF-SIMS) and laser confocal microscopy indicated that enzymes were immobilized within solid fibers as well as within microbead structures distributed throughout the webs. Degradation studies of CALB-enzyme functionalized solution-blown nonwoven (EFSBN)-PCL webs at 40 °C or ambient temperature showed that EFSBN-PCL webs degraded rapidly when exposed to aqueous pH 8 buffer. Scanning electron microscopy (SEM) images of partially degraded webs showed that thinner fibers disappeared first, thus, controlling fiber dimensions could control degradation rates. Rapid degradation was attributed to the combination of nanofibrous web structure and the distribution of enzymes throughout the webs. CALB immobilized in the solid dry webs exhibited long storage stability at room temperature or when refrigerated, with around 60% catalytic activity being retained after 120 days compared to the initial activity. Dry storage stability at ambient conditions and rapid degradation upon exposure to water demonstrated that EFSBN-PCL could be used as fibers or binders in degradable textile or paper products, as components in packaging, for tissue engineering and for controlled-release drug or controlled-release industrial and consumer product applications. Full article
(This article belongs to the Special Issue Fibers 10th Anniversary: Past, Present, and Future)
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Article
On the Pressure and Rate of Infiltration Made by a Carbon Fiber Yarn with an Aluminum Melt during Ultrasonic Treatment
Fibers 2023, 11(5), 41; https://doi.org/10.3390/fib11050041 - 06 May 2023
Viewed by 788
Abstract
The effect of the infiltration time of a carbon fiber yarn in the range of 6 to 13.6 s on the infiltrated volume under the cavitation of an aluminum melt has been studied. When the infiltration time was more than 10 s, the [...] Read more.
The effect of the infiltration time of a carbon fiber yarn in the range of 6 to 13.6 s on the infiltrated volume under the cavitation of an aluminum melt has been studied. When the infiltration time was more than 10 s, the carbon fiber was completely infiltrated with the matrix melt, and a decrease in the infiltration time led to a monotonous decrease in the fraction of the infiltrated volume. Based on the experimental data, the infiltration rate and the pressure necessary to infiltrate a carbon fiber yarn with an aluminum melt were estimated. The infiltration rate was 20.9 cm3/s and was independent of the infiltration depth. The calculated pressure necessary for the complete infiltration of a carbon fiber yarn at this rate was about 270 Pa. A comparison of the pressure values calculated according to Darcy’s and Forchheimer’s laws showed that the difference between them did not exceed 0.01%. This indicates that a simpler Darcy’s law could be used to estimate pressure. Full article
(This article belongs to the Special Issue Fibers 10th Anniversary: Past, Present, and Future)
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Article
Shear Strength Prediction of Steel-Fiber-Reinforced Concrete Beams Using the M5P Model
Fibers 2023, 11(5), 37; https://doi.org/10.3390/fib11050037 - 27 Apr 2023
Viewed by 1015
Abstract
This article presents a mathematical model developed using the M5P tree to predict the shear strength of steel-fiber-reinforced concrete (SFRC) for slender beams using soft computing techniques. This method is becoming increasingly popular for addressing complex technical problems. Other approaches, such as semi-empirical [...] Read more.
This article presents a mathematical model developed using the M5P tree to predict the shear strength of steel-fiber-reinforced concrete (SFRC) for slender beams using soft computing techniques. This method is becoming increasingly popular for addressing complex technical problems. Other approaches, such as semi-empirical equations, can show known inaccuracies, and some soft computing methods may not produce predictive equations. The model was trained and tested using 332 samples from an experimental database found in the previous literature, and it takes into account independent variables such as the effective depth d, beam width bw, longitudinal reinforcement ratio ρ, concrete compressive strength fc, shear span to effective depth ratio a/d, and steel fiber factor Fsf. The predictive performance of the proposed M5P-based model was also compared with the one of existing models proposed in the previous literature. The evaluation revealed that the M5P-based model provided a more consistent and accurate prediction of the actual strength compared to the existing models, achieving an R2 value of 0.969 and an RMSE value of 37.307 for the testing dataset. It was found to be a reliable and also straightforward model. The proposed model is likely to be highly helpful in assessing the shear capacity of SFRC beams during the pre-planning and pre-design stages and could also be useful to help for future revisions of design standards. Full article
(This article belongs to the Special Issue Fibers 10th Anniversary: Past, Present, and Future)
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Article
Adsorption Studies of Ammonia, Protein, and Phytic Acid Using Chitosan Fiber Coated with Oxidized Cellulose Nanofiber
Fibers 2023, 11(4), 32; https://doi.org/10.3390/fib11040032 - 30 Mar 2023
Cited by 1 | Viewed by 849
Abstract
Herein, chitosan (CS) fibers coated with TEMPO-oxidized cellulose nanofibers (CS/TOCN fibers) were successfully prepared using a wet spinning technique; CS was dissolved in acetic acid to obtain a CS doping solution. The tensile strength and ammonia adsorption percentages increased with increasing TOCN concentration. [...] Read more.
Herein, chitosan (CS) fibers coated with TEMPO-oxidized cellulose nanofibers (CS/TOCN fibers) were successfully prepared using a wet spinning technique; CS was dissolved in acetic acid to obtain a CS doping solution. The tensile strength and ammonia adsorption percentages increased with increasing TOCN concentration. The maximum ammonia adsorption percentage (41.39%, 8.3 mg/g) was obtained when 2% NaOH and 0.01% TOCN were used as the coagulation solution. Additionally, the adsorption of model proteins, including lysozyme (Lz), cytochrome C (Cyt C), and bovine serum albumin (BSA), were studied. In water, the CS/TOCN fibers with negative charges adsorbed more Lz with positive charges than CS fibers containing positive charges. Contrastingly, CS fibers adsorbed more Cyt C and BSA containing negative charges in phosphate-buffered saline solutions than CS/TOCN fibers. Furthermore, the adsorption percentage of phytic acid using the CS/TOCN fibers reached 64.18% (288 mg/g) within 60 min. Thus, TOCNs improved the tensile properties of CS fibers and preferred positively charged materials contaminated in water, such as ammonia, Lz, and phytic acid. Full article
(This article belongs to the Special Issue Fibers 10th Anniversary: Past, Present, and Future)
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Article
Damage Investigation on the Carbon Tows during Rewinding and Braiding Processes
Fibers 2023, 11(3), 30; https://doi.org/10.3390/fib11030030 - 22 Mar 2023
Viewed by 984
Abstract
During the manufacturing process, the fibrous materials used in composite reinforcements are subjected to many sources of damage that must be managed if the best possible quality is to be reached for the final product. More specifically, carbon fibers are subjected, during reinforcement [...] Read more.
During the manufacturing process, the fibrous materials used in composite reinforcements are subjected to many sources of damage that must be managed if the best possible quality is to be reached for the final product. More specifically, carbon fibers are subjected, during reinforcement manufacturing, to friction with mechanical components and with other tows and to excessive tensile loads due to specific configurations required by textile devices, which results in degradation that affects their mechanical properties and those of final products. While many studies have focused on carbon tow damage during the weaving process, roving quality control during the post-braiding steps, such as the rewinding or braiding processes, is less studied in the literature. In this study, an experimental approach was developed to quantify the damage inflicted on 12 K carbon tows during the rewinding and braiding processes using image analysis software. Based on these images, a damage criterion is defined to quantify the influence of the parameters associated with rewinding and braiding processes on degradation of carbon tows. During the rewinding stage, the influence of the process parameters on the degradation by friction of the tows was significant, but the properties (linear density and tenacity) of these carbon tows were little-modified. On the other hand, the great influence of the tension applied on tows on the inflicted damage was experimentally demonstrated, during both the rewinding and braiding steps, which may have resulted in a loss of tenacity of up to 27%. Full article
(This article belongs to the Special Issue Fibers 10th Anniversary: Past, Present, and Future)
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Review

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Review
Targeted Pre-Treatment of Hemp Fibers and the Effect on Mechanical Properties of Polymer Composites
Fibers 2023, 11(5), 43; https://doi.org/10.3390/fib11050043 - 09 May 2023
Viewed by 1790
Abstract
Research on plant-fiber-reinforced composites has gained significant research interest since it generates composites with exceptional mechanical properties; however, the potential of hemp fibers can only be fully exploited if the fibers are well separated from the bundle to achieve cellulose-rich fibers. This is [...] Read more.
Research on plant-fiber-reinforced composites has gained significant research interest since it generates composites with exceptional mechanical properties; however, the potential of hemp fibers can only be fully exploited if the fibers are well separated from the bundle to achieve cellulose-rich fibers. This is because well-separated bast fibers that are long and exhibit higher fiber aspect ratio enhance the mechanical properties of the composite by influencing property translations upon loading. A key feature for successful implementation of natural fibers is to selectively remove non-cellulosic components of hemp fiber to yield cellulose-rich fibers with minimal defects. Targeted pre-treatment techniques have been commonly used to address the aforementioned concerns by optimizing properties on the fiber’s surface. This in turn improves interfacial bonding between the fibers and the hydrophobic polymer, enhances the robustness of hemp fibers by improving their thermal stability and increases resistance to microbial degradation. In this study, we comprehensively review the targeted pre-treatment techniques of hemp fiber and the effect of hemp fiber as a reinforcement on the mechanical properties of polymeric composites. Full article
(This article belongs to the Special Issue Fibers 10th Anniversary: Past, Present, and Future)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Chalcogenide glasses and high-NA fibres for mid-IR supercontinuum generation
Authors: Ole Bang; Richard Crane; Christian Rosenberg Petersen
Affiliation: Technical University of Denmark; University of Nottingham

Title: Novel Design and Validation Test of a Rollable CFRP Blade for UAM
Authors: JAEYOUNG Kang
Affiliation: Department of Mechanical Engineering, College of Engineering, INHA University, Incheon 22212, Korea
Abstract: UAM must have large wings or propellers to generate lift, which causes constrained ground operation. In order to solve the spatial inefficiency of blades, we present a novel design concept called the rollable blade that can be rolled and unfolded. For this, CFRP (carbon fiber reinforced plastic) deployable boom is theoretically designed and manufactured, and takes a role of support beam structure in the rollable blade system. Second, the length of transient region during deployment is theoretically estimated for the design of the inner support frame to maintain the stiffness of the blade system in the transient region. Finally, the rollable blade system in the combination of 3 bi-stable CFRP support beam, CFRP skin with NACA0018 airfoil and internal support frame is designed and manufactured. The repeated deployment cycle test was conducted over 100 times for the validation of the proposed rollable wing.

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