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Polymers
Special Issues
Functional Nano/Microfiber Based Polymer Materials
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Functional Nano/Microfiber Based Polymer Materials

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

Deadline for manuscript submissions: closed (15 January 2024) | Viewed by 8024

Special Issue Editor

Dr. Hu Tu

E-Mail Website
Guest Editor
School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
Interests: cellulose; chitin/chitosan; fibers; high strength; electrospun

Special Issue Information

Dear Colleagues,

The development and utilization of functional nano/microfiber-based polymer materials have always a hot topic due to their advantages of large surface area and easy processing, among others. There is an increasing demand for multifunctional and intelligent nano/microfiber-based polymer materials, which show great potential in many fields such as biomedical dressing, filtration and separation, energy and flexible sensors, and functional protection (flame retardance, UV protection, electromagnetic shielding, etc.). This Special Issue will collect relevant studies about the development of functional nano/microfiber-based materials, which includes the functional fibers and the membrane or gels composed of nanofibers. Papers should be focused on the microstructure and functional design of nano/microfiber-based polymer materials. We will publish original research articles, reviews, and perspective papers about the recent progress in nano/microfiber-based materials, including their synthesis, fabrication, processing, high performance, and functional application. 

Dr. Hu Tu
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

  • polymers
  • fiber
  • functional
  • nanofiber
  • high performance

Published Papers (4 papers)

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Research

15 pages, 4705 KiB  
Article
Oil Adsorption Kinetics of Calcium Stearate-Coated Kapok Fibers
by Aimee Lorraine M. Blaquera, Marvin U. Herrera, Ronniel D. Manalo, Monet Concepcion Maguyon-Detras, Cybelle Concepcion M. Futalan and Mary Donnabelle L. Balela
Polymers 2023, 15(2), 452; https://doi.org/10.3390/polym15020452 - 15 Jan 2023
Cited by 2 | Viewed by 2115
Abstract
This study used a simple and efficient dipping method to prepare oleophilic calcium stearate-coated kapok fibers (CaSt2-KF) with improved hydrophobicity. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) confirmed the deposition of calcium stearate particles on [...] Read more.
This study used a simple and efficient dipping method to prepare oleophilic calcium stearate-coated kapok fibers (CaSt2-KF) with improved hydrophobicity. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) confirmed the deposition of calcium stearate particles on the surface of the kapok fibers. This led to higher surface roughness and improved static water contact angle of 137.4°. The calcium stearate-coated kapok fibers exhibited comparable sorption capacities for kerosene, diesel, and palm oil. However, the highest sorption capacity of 59.69 g/g was observed for motor oil at static conditions. For motor oil in water, the coated fibers exhibited fast initial sorption and a 65% removal efficiency after 30 s. At equilibrium, CaSt2-KF attained a sorption capacity of 33.9 g/g and 92.5% removal efficiency for motor oil in water. The sorption kinetics of pure motor oil and motor oil in water follows the pseudo-second-order kinetic model, and the Elovich model further described chemisorption. Intraparticle diffusion and liquid film diffusion were both present, with the latter being the predominant diffusion mechanism during motor oil sorption. Full article
(This article belongs to the Special Issue Functional Nano/Microfiber Based Polymer Materials)
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14 pages, 8031 KiB  
Article
Ferrous-Oxalate-Modified Aramid Nanofibers Heterogeneous Fenton Catalyst for Methylene Blue Degradation
by Lu Fu, Zhiyu Huang, Xiang Zhou, Liumi Deng, Meng Liao, Shiwen Yang, Shaohua Chen, Hua Wang and Luoxin Wang
Polymers 2022, 14(17), 3491; https://doi.org/10.3390/polym14173491 - 26 Aug 2022
Cited by 4 | Viewed by 1761
Abstract
The heterogeneous Fenton system has drawn great attention in recent years due to its effective degradation of polluted water capability without limitation of the pH range and avoiding excess ferric hydroxide sludge. Therefore, simple chemical precipitation and vacuum filtration method for manufacturing the [...] Read more.
The heterogeneous Fenton system has drawn great attention in recent years due to its effective degradation of polluted water capability without limitation of the pH range and avoiding excess ferric hydroxide sludge. Therefore, simple chemical precipitation and vacuum filtration method for manufacturing the heterogeneous Fenton aramid nanofibers (ANFs)/ferrous oxalate (FeC2O4) composite membrane catalysts with excellent degradation of methylene blue (MB) is reported in the study. The morphology and structure of materials synthesized were characterized by scanning electron microscope (SEM), X-ray energy spectrum analysis (EDS), infrared spectrometer (FTIR), and X-ray diffraction (XRD) equipment. The 10 ppm MB degradation efficiency of composite catalyst and ferrous oxalate (FeC2O4) within 15 min were 94.5% and 91.6%, respectively. The content of methylene blue was measured by a UV-Vis spectrophotometer. Moreover, the dye degradation efficiency still could achieve 92% after five cycles, indicating the composite catalyst with excellent chemical stability and reusability. Simultaneously, the composite catalyst membrane can degrade not only MB but also rhodamine B (RB), orange II (O II), and methyl orange (MO). This study represents a new avenue for the fabrication of heterogeneous Fenton catalysts and will contribute to dye wastewater purification, especially in the degradation of methylene blue. Full article
(This article belongs to the Special Issue Functional Nano/Microfiber Based Polymer Materials)
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14 pages, 3003 KiB  
Article
Influences of Process Parameters of Near-Field Direct-Writing Melt Electrospinning on Performances of Polycaprolactone/Nano-Hydroxyapatite Scaffolds
by Zhijun Chen, Yanbo Liu, Juan Huang, Ming Hao, Xiaodong Hu, Xiaoming Qian, Jintu Fan, Hongjun Yang and Bo Yang
Polymers 2022, 14(16), 3404; https://doi.org/10.3390/polym14163404 - 19 Aug 2022
Cited by 12 | Viewed by 1752
Abstract
In this paper, near-field direct-writing melt electrospinning technology was employed to fabricate a polycaprolactone/nano-hydroxyapatite (PCL/nHA) scaffold for future applications in tissue engineering. The influences of different fabrication parameters on the structural characteristics, mechanical properties, and thermal stability of the scaffolds were discussed. It [...] Read more.
In this paper, near-field direct-writing melt electrospinning technology was employed to fabricate a polycaprolactone/nano-hydroxyapatite (PCL/nHA) scaffold for future applications in tissue engineering. The influences of different fabrication parameters on the structural characteristics, mechanical properties, and thermal stability of the scaffolds were discussed. It was found that the moving speed of the receiving plate had the most significant effect on the scaffold performance, followed by the receiving distance and spinning voltage. The results also showed that these process parameters affected the fiber diameter, corresponding coefficient of variation, porosity of the composite scaffolds, and mechanical properties of the samples, including the tensile strength and fiber peeling strength. Moreover, the process parameters could influence the thermal degradation performance and melting process. Although the mass loss of the composite scaffolds was not obvious after degradation, the mechanical performance degraded severely. It was concluded that the more appropriate process parameters for preparing PCL/nHA scaffolds were a spinning voltage of −4 kV, receiving distance of 4 mm, moving speed of receiving plate of 5 mm/s, and melt temperature of 130 °C. This study proved that near-field direct-writing melt electrospinning technology is a good method to obtain PCL/nHA composite scaffolds with an excellent mechanical properties and desired morphology for future tissue engineering applications. Full article
(This article belongs to the Special Issue Functional Nano/Microfiber Based Polymer Materials)
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15 pages, 3340 KiB  
Article
Temperature Responsive PBT Bicomponent Fibers for Dynamic Thermal Insulation
by Ninad Khadse, Rebecca Ruckdashel, Shnaidie Macajoux, Hongwei Sun and Jay Hoon Park
Polymers 2022, 14(14), 2757; https://doi.org/10.3390/polym14142757 - 06 Jul 2022
Cited by 2 | Viewed by 1857
Abstract
Thermoresponsive self-crimping polybutylene terephtlate (PBT)-based bicomponent fibers were fabricated by melt-spinning to serve as primary constituents for textiles, such as nonwoven battings, for an adaptive single insulting layer. Due to the intrinsically mismatching modulus and coefficient of thermal expansion (CTE), the fibers curl [...] Read more.
Thermoresponsive self-crimping polybutylene terephtlate (PBT)-based bicomponent fibers were fabricated by melt-spinning to serve as primary constituents for textiles, such as nonwoven battings, for an adaptive single insulting layer. Due to the intrinsically mismatching modulus and coefficient of thermal expansion (CTE), the fibers curl or straighten with temperature, similar to the concept of Timoshenko’s bimetallic strip. Maximizing the curvature is driven by an optimum of fiber diameter, overall CTE, and fiber moduli, which are all affected by drawing ratio and, consequently, fiber’s microstructure. A draw ratio of 2.33 yielded the best combination of mechanical and thermal properties; it was observed that increasing the draw ratio does not necessarily increase the self-crimping behavior. Tests performed on non-woven battings of these fibers exhibited comparable thermoreponsive behaviors to polypropylene-based thermoresponsive fibers from previous studies in the −20 °C to 20 °C temperature range, which has potential for wearable insulations for both commercial and defense sectors alike. Full article
(This article belongs to the Special Issue Functional Nano/Microfiber Based Polymer Materials)
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