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Advances in Functional Polymers and Composites: 2nd Edition

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Smart and Functional Polymers".

Deadline for manuscript submissions: 10 June 2025 | Viewed by 308

Special Issue Editors

Fujian Provincial Key Laboratory of Terahertz Functional Devices and Intelligent Sensing, School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China
Interests: polymer composites; smart structures; mechanics; multiscale analysis; elasticity & viscoelasticity; non-destructive testing & evaluation
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Guest Editor
Fujian Provincial Key Laboratory of Terahertz Functional Devices and Intelligent Sensing, School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China
Interests: theoretical analysis; structural health monitoring; fatigue; structural integrity
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Polymers and composites are advanced in terms of product efficiency, cost effectiveness, lightweight, good designability, flexibility for manufacturing, etc. They have found widespread applications across diverse sectors, including aerospace, transportation, sustainable energy, construction, and beyond. The production of polymer and composite components encompasses a multifaceted process, involving structural design, preform shaping, curing and forming, machining and assembly, and inspection and analysis. It is imperative to recognize that each of these steps has a direct and substantial impact on the overall performance and functionality of the resultant structure. In light of the escalating adoption of polymer and composite materials in high-end applications across various industries, composite components are evolving towards larger-scale integral structures, increased complexity, and multi-functions. These developments inevitably give rise to heightened challenges in the design and manufacturing of advanced functional polymers and composites.

This Special Issue, therefore, seeks to publish the cutting-edge research and recent advances in functional polymers and composites, including, but not limited to, structural design, mechanics, molding processes, machining and assembly techniques, defect detection methodologies, characterization, and the functional evaluation of polymers and composites. We encourage submissions of original research papers, short communications, and review articles. We hope this Special Issue will contribute to the advancement of scientific theories and methodologies in the realm of polymers and composites, aiming to foster the widespread application of advanced functional polymers and composites in high-end equipment and development within a multitude of disciplines, including aerospace, mechanical engineering, materials science, mechanics, chemistry, and their interconnected fields.

For this Special Issue, we welcome contributions pertaining to, but not limited to, the following domains:

  • Advances in polymers and composites;
  • Machining theories and technologies;
  • Multiscale mechanics;
  • Structural health monitoring;
  • Functional evaluation and analysis;
  • Smart materials and structures;
  • Fatigue and structural integrity.

Dr. Bing Wang
Prof. Dr. Lihua Zhan
Dr. Chenglong Guan
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

  • polymer
  • composite
  • manufacture
  • mechanical properties
  • mechanics
  • theoretical analysis
  • structural health monitoring
  • fatigue
  • structural integrity
  • nondestructive testing and evaluation
  • finite element analysis

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Published Papers (2 papers)

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Research

16 pages, 6252 KiB  
Article
3D Printing Wood–PLA Composites: The Impact of Wood Particle Size
by Wojciech Jasiński, Karol Szymanowski, Barbara Nasiłowska, Marek Barlak, Izabela Betlej, Artur Prokopiuk and Piotr Borysiuk
Polymers 2025, 17(9), 1165; https://doi.org/10.3390/polym17091165 - 25 Apr 2025
Viewed by 185
Abstract
Particle size of wood fillers used in FDM 3D printing filaments is a topic not commonly discussed in the literature. Research on traditional wood–polymer composites (WPCs) suggests that bigger particles improve the composite’s tensile properties. Is that the case at the 3D printing [...] Read more.
Particle size of wood fillers used in FDM 3D printing filaments is a topic not commonly discussed in the literature. Research on traditional wood–polymer composites (WPCs) suggests that bigger particles improve the composite’s tensile properties. Is that the case at the 3D printing scale? Five variants of composites were prepared using recycled PLA and sawdust, differentiated by filler particle size (<0.2 mm, 0.2 mm–0.4 mm, 0.4 mm–0.6 mm, 0.6 mm–0.8 mm, 0.8 mm–1 mm). Current draw during extrusion, as well as tensile strength and tensile modulus, were tested. Test results of tensile strength, ranging from 9.21 MPa to 14.28 MPa, and tensile modulus, ranging from 802 MPa to 1014 MPa, have shown no clear correlation between wood particle size and tensile properties of the composites at the 3D printing scale. A clear increase in forces needed to extrude composites containing larger particles of wood was discovered, as well as the inability to extrude composites filled with the biggest tested particle size. To further explore this topic, SEM/EDS imaging of the tested composites was performed. Based on the test results, wood particle sizes ranging from one-fifth to one-half of the nozzle size are recommended for use as fillers in wood–PLA composites intended for 3D printing. Full article
(This article belongs to the Special Issue Advances in Functional Polymers and Composites: 2nd Edition)
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17 pages, 3777 KiB  
Article
Effect of Block Polyether as an Interfacial Dispersant on the Properties of Nanosilica/Natural Rubber Composites
by Ying Liu, Jiahui Mei, Depeng Gong, Yanjun Chen and Chaocan Zhang
Polymers 2025, 17(8), 1091; https://doi.org/10.3390/polym17081091 - 17 Apr 2025
Viewed by 202
Abstract
To enhance the dispersion of silica within a natural rubber (NR) matrix and improve the modification efficiency of the silane coupling agent, a novel interfacial dispersant composed of block polyether with a PEO-PPO-PEO structure is employed in this study. This block polyether, consisting [...] Read more.
To enhance the dispersion of silica within a natural rubber (NR) matrix and improve the modification efficiency of the silane coupling agent, a novel interfacial dispersant composed of block polyether with a PEO-PPO-PEO structure is employed in this study. This block polyether, consisting of poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO), serves to reduce the surface energy of silica and improve its compatibility with the rubber matrix. Three types of block polyethers with different hydrophilic–lipophilic balance (HLB) values of 8, 13, and 22 are selected to regulate the surface tension of silica. Subsequently, bis[γ-(triethoxysilyl)propyl] tetrasulfide (TESPT) is used to further modify the silica surface, aiming to prepare high-performance rubber composites. The results indicate that the HLB value of the block polyether has a significant influence on the system. Compared with block polyethers having HLB values of 8 and 22, the block polyether with an HLB value of 13 demonstrated superior silica dispersion, leading to enhanced filler–rubber interfacial interactions. Consequently, both the mechanical properties and processability of the NR composites were substantially improved. When the dosage of this block polyether was 1 phr, the composite exhibited a tensile strength of 28.9 MPa and an elongation at break of 523%. Full article
(This article belongs to the Special Issue Advances in Functional Polymers and Composites: 2nd Edition)
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