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Polymers
Special Issues
New Polymer Fibers: Production and Applications
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New Polymer Fibers: Production and Applications

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

Deadline for manuscript submissions: 31 May 2025 | Viewed by 5168

Special Issue Editors

Dr. Joana Costa Vieira

E-Mail Website
Guest Editor
Fiber Materials and Environmental Technologies Unit (FibEnTech-UBI), Universidade da Beira Interior, 6201-001 Covilhã, Portugal
Interests: biomaterials; composites; biodegradable polymers; paper/tissue paper; bioproducts from forest residues
Dr. Ana Paula Costa

E-Mail Website
Guest Editor
Fiber Materials and Environmental Technologies Unit (FibEnTech-UBI), Universidade da Beira Interior, 6201-001 Covilhã, Portugal
Interests: modification of cellulosic surfaces by cold plasma treatment; biotechnology applied to the pulp and paper industry; bioproducts from forest residues; tissue paper; composites
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

At present, in a new era where knowledge and science are tools to develop new materials with new characteristics, all scientists are called on to develop these new materials to meet the new requirements often imposed by society, in a more sustainable, efficient, and less expensive way. The future advances and knowledge in these scientific topics are sure to impact daily life worldwide.

This Special Issue, “New Polymer Fibers: Productions and Its Applications”, aims to be a collection of high-quality original/review papers focusing on recent progress in:

  • New natural and synthetic Polymer fibers: production processes, properties upgrade and possible applications;
  • Novel Polymer fiber-based materials;
  • Additives and Polymer fiber modifications: product characterization and nanotechnologies to improve physical properties of Polymer fiber-based materials;
  • Composites, smart, sustainable, and other novel Polymer fiber-based materials

We also look forward to receiving review articles for publication and generating a successful Special Issue. 

Dr. Joana Costa Vieira
Dr. Ana Paula Costa
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

  • natural fibers
  • physical properties
  • synthetic fibers
  • process production
  • applications
  • composites
  • biomaterials
  • smart-materials
  • nanomaterials
  • sustainable materials

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (3 papers)

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Research

20 pages, 7988 KiB  
Article
Viability Study of Serra da Estrela Dog Wool to Produce Green Composites
by Alexandra Soledade Gomes, Paulo Torrão Fiadeiro, André Costa Vieira and Joana Costa Vieira
Polymers 2024, 16(5), 718; https://doi.org/10.3390/polym16050718 - 6 Mar 2024
Cited by 1 | Viewed by 1082
Abstract
The environmental emergency has alerted consumers and industries to choose products derived from renewable sources over petroleum derivatives. Natural fibers of plant origin for reinforcing composite materials dominate the field of research aiming to replace synthetic fibers. The field of application of green [...] Read more.
The environmental emergency has alerted consumers and industries to choose products derived from renewable sources over petroleum derivatives. Natural fibers of plant origin for reinforcing composite materials dominate the field of research aiming to replace synthetic fibers. The field of application of green dog wool composite materials needs to be reinforced and proven, as the industry is looking for more sustainable solutions and on the other hand this type of raw material (pet grooming waste) tends to grow. Hence, in the present work, the feasibility of applying natural fibers of dog origin (mainly composed by keratin) in green composites was studied. The green composites were developed using chemically treated dog wool of the breed Serra da Estrela (with NaOH and PVA) as reinforcement and a green epoxy resin as a matrix. The chemical treatments aimed to improve adhesion between fibers and matrix. The fibers’ composition was determined using X-ray Diffraction (X-RD). Their morphology was determined using a scanning electron microscope (SEM). The wettability of the fiber was also evaluated qualitatively by analyzing drops of resin placed on the fibers treated with the different treatments. The mechanical properties of the composites were also studied through mechanical tensile, flexural, and relaxation tests. Overall, the best results were obtained for the dog wool fibers without treatment. The tensile and flexural strength of this biocomposite were 11 MPa and 26.8 MPa, respectively, while the tensile and flexural elastic modulus were 555 MPa and 1100 MPa, respectively. It was also possible to verify that the PVA treatment caused degradation of the fiber, resulting in a decrease in mechanical tensile strength of approximately 42.7%, 59.7% in flexural strength and approximately 59% of the stress after 120 min of relaxation when compared to fiber made from untreated dog wool. On the other hand, the NaOH treatment worked as a fiber wash process, removing waxes and fats naturally present on the fiber surface. Full article
(This article belongs to the Special Issue New Polymer Fibers: Production and Applications)
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18 pages, 17341 KiB  
Article
Experimental Analysis and Application of a Multivariable Regression Technique to Define the Optimal Drilling Conditions for Carbon Fiber Reinforced Polymer (CFRP) Composites
by Miguel Ángel Molina-Moya, Enrique García-Martínez, Valentín Miguel, Juana Coello and Alberto Martínez-Martínez
Polymers 2023, 15(18), 3710; https://doi.org/10.3390/polym15183710 - 8 Sep 2023
Cited by 3 | Viewed by 1025
Abstract
Carbon fiber reinforced polymers (CFRPs) are interesting materials due to their excellent properties, such as their high strength-to-weight ratio, low thermal expansion, and high fatigue resistance. However, to meet the requirements for their assembly, the drilling processes involved should be optimized. Defects such [...] Read more.
Carbon fiber reinforced polymers (CFRPs) are interesting materials due to their excellent properties, such as their high strength-to-weight ratio, low thermal expansion, and high fatigue resistance. However, to meet the requirements for their assembly, the drilling processes involved should be optimized. Defects such as delamination, dimensional errors and poor internal surface finish can lead to the premature failure of parts when bolt-joined or rivet-connected. In addition, the characteristic anisotropy and heterogeneity of these materials, and the issues related to the temperature reached during drilling, make it difficult to obtain optimal cutting parameters or to achieve high material removal rates. This research focuses on the optimization of the CFRPs drilling process by means of experimental analysis—varying the feed and spindle speed—for two different types of commercial drills—a twist tool and a dagger tool. An automatic image processing methodology was developed for the evaluation of the dimensional accuracy and delamination of the holes. The optimization was carried out using a multi-objective regression technique based on the dimensional deviations, delamination and surface finish. The areas with favorable machining conditions have been delimited for both tools and the results indicate that the twist tool allows one to achieve more productive cutting conditions than the dagger tool, when the combination of low feeds and high spindle speeds are the conditions to be avoided. Full article
(This article belongs to the Special Issue New Polymer Fibers: Production and Applications)
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14 pages, 4326 KiB  
Article
Superior Enhancement of the UHMWPE Fiber/Epoxy Interface through the Combination of Plasma Treatment and Polypyrrole In-Situ Grown Fibers
by Xiaoning Yang, Zhongwei Zhang, Yuhang Xiang, Qingya Sun, Yilu Xia and Ziming Xiong
Polymers 2023, 15(10), 2265; https://doi.org/10.3390/polym15102265 - 11 May 2023
Cited by 7 | Viewed by 2259
Abstract
Obtaining a robust fiber/matrix interface is crucial for enhancing the mechanical performance of fiber-reinforced composites. This study addresses the issue by presenting a novel physical–chemical modification method to improve the interfacial property of an ultra-high molecular weight polyethylene (UHMWPE) fiber and epoxy resin. [...] Read more.
Obtaining a robust fiber/matrix interface is crucial for enhancing the mechanical performance of fiber-reinforced composites. This study addresses the issue by presenting a novel physical–chemical modification method to improve the interfacial property of an ultra-high molecular weight polyethylene (UHMWPE) fiber and epoxy resin. The UHMWPE fiber was successfully grafted with polypyrrole (PPy) for the first time after a plasma treatment in an atmosphere of mixed oxygen and nitrogen. The results demonstrated that the maximum value of the interfacial shear strength (IFSS) of the UHMWPE fiber/epoxy reached 15.75 MPa, which was significantly enhanced by 357% compared to the pristine UHMWPE fiber. Meanwhile, the tensile strength of the UHMWPE fiber was only slightly reduced by 7.3%, which was furtherly verified by the Weibull distribution analysis. The surface morphology and structure of the PPy in-situ grown UHMWPE fibers were studied using SEM, FTIR, and contact angle measurement. The results showed that the enhancement of the interfacial performance was attributed to the increased fiber surface roughness and in-situ grown groups, which improved the surface wettability between the UHMWPE fibers and epoxy resins. Full article
(This article belongs to the Special Issue New Polymer Fibers: Production and Applications)
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