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3D Printing of Polymeric Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: 20 July 2025 | Viewed by 791

Special Issue Editors


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Guest Editor
1. Departamento de Ingeniería Eléctrica, Electrónica Automática y Física Aplicada, ETSIDI, Universidad Politécnica de Madrid, Madrid, Spain
2. IMDEA Materials Institute, Madrid, Spain
Interests: novel materials; additive manufacturing; sensors; 3D printing; aerospace; scaffolds; flexible electronics
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Escuela Politécnica Superior, Universidad Francisco de Vitoria, Ctra. Pozuelo-Majadahonda Km 1,800, 28223 Pozuelo de Alarcón, Spain
Interests: biodegradable polymers; smart materials; phase change materials; functional nanomaterials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nowadays, plenty of scientific fields demand the 3D printing of polymeric materials, from the aircraft and airspace field to the medical field. Furthermore, the merge of multimaterial 3D printing allows for control of the mechanical properties desired for a specific application. In the case of the airspace and automotive sectors, reinforcement of the polymer matrix with metallic continuous fibers and/or nanoparticles by using 3D printing technology enhances the mechanical stress and strain of the 3D printed structure. In the medical field, the fabrication of metallic polymer composites scaffolds biocompatible with cellular tissue and with enhanced mechanical properties facilitates the elimination of biodegraded prosthesis implants in the blood torrent after some programmed time. Regarding other application fields, such as edification, environmental science, geo-sensing, etc. , the excellent control of the size and kind of materials fused and deposited allows for the fabrication of novel sensors and useful designs. Furthermore, the incorporation of some additives such as flame retardant components in the polymer matrixed improves the utility of the desired volume printed.

This Special Issue aims to collect the efforts of scientists, engineers, and experts in additive manufacturing with 3D printing technology that make use of any kind of polymer materials reinforced with different additive particles with the aim of enhancing their mechanical, conductive, biodegraded, regenerative, etc, properties for specific applications.

It is our pleasure to invite you to submit a manuscript to this Special Issue. Full papers, communications, and reviews are all welcome. 

Dr. Jose Sanchez del Rio Saez
Dr. Guangzhong Yin
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. Materials 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 2600 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

  • additive manufacturing
  • 3D printing
  • flexible electronics
  • biomaterials
  • scaffolds
  • novel sensors
  • flame retardancy
  • simulations

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Published Papers (1 paper)

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Research

26 pages, 9213 KiB  
Article
Effect of Accelerated Degradation on the Dimensions and Mechanical Performance of 3D-Printed PLA Parts Using Different Filament Manufacturing Techniques
by Laura Castanon-Jano, Mario Lozano-Corona and Elena Blanco-Fernandez
Materials 2025, 18(10), 2267; https://doi.org/10.3390/ma18102267 - 13 May 2025
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Abstract
Polymer 3D printing is popular due to its accessibility and low material waste. While commonly used in prototyping and medical applications, its potential for molds in complex concrete geometries, such as heritage reproductions or artificial reefs, remains underexplored. These applications require resistance to [...] Read more.
Polymer 3D printing is popular due to its accessibility and low material waste. While commonly used in prototyping and medical applications, its potential for molds in complex concrete geometries, such as heritage reproductions or artificial reefs, remains underexplored. These applications require resistance to degradation from UV exposure, rain, and highly alkaline concrete (pH~13). This study evaluates the accelerated degradation of 3D-printed PLA specimens. Four PLA types were tested: virgin PLA extruded in the lab, commercial PLA, PLA with 50% metal powder, and PLA with encapsulated metal powder. Rectangular specimens were printed and tested under flexural loads following ISO-167 standards. Initially, their performance was assessed without exposure. Then, half of the specimens underwent UV and rain simulation, while the rest were immersed in an alkaline solution (pH 13, 50 °C). Dimensional changes and flexural strength were measured at five intervals. Exposure to an alkaline medium at 50 °C is more aggressive than UV radiation, limiting the lifespan of PLA formwork. Adding metal powder weakens PLA by 65% after 7 days, making it unsuitable. Printing defects accelerate degradation. Unmodified PLA is the best choice for concrete formwork, with commercial PLA and PLA from pellets showing nearly identical behavior. Full article
(This article belongs to the Special Issue 3D Printing of Polymeric Materials)
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