Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
6.6
5.0
Journals
Polymers
Special Issues
Polymers and Polymer-Based Composites for Additive Manufacturing II
share announcement

Polymers and Polymer-Based Composites for Additive Manufacturing II

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

Deadline for manuscript submissions: closed (20 February 2024) | Viewed by 7991

Special Issue Editors

Dr. Alberto Sanz de León

E-Mail Website
Guest Editor
Departamento de Ciencia de los Materiales, I. M. y Q. I., IMEYMAT, Facultad de Ciencias, Universidad de Cádiz, Campus Río San Pedro, s/n, 11510 Puerto Real, Cádiz, Spain
Interests: polymer chemistry; additive manufacturing; nanocomposites; biomaterials
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Sergio I. Molina

E-Mail Website
Guest Editor
Departamento Ciencia de los Materiales, I. M. y Q. I., IMEYMAT, Facultad de Ciencias, Universidad de Cádiz, Campus Río San Pedro, s/n, 11510 Puerto Real, Cádiz, Spain
Interests: additive manufacturing; 3D printing; material development; large-format additive manufacturing; fused granular fabrication; composites; fibre-reinforced polymers
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Additive manufacturing (AM) comprises a number of technologies which allow the design and fabrication of complex and tailor-made structures at different scales with high reproducibility without the need for any mold. This has allowed AM to establish itself as a powerful alternative to traditional manufacturing. In this context, the development of new materials for AM with enhanced mechanical and/or functional properties has attracted enormous interest both in the scientific community and the industrial sector.

The scope of this Special Issue includes the synthesis, processing, and characterization of novel polymers and polymer-based composites for additive manufacturing, as well as 3D printing of structural and functional materials with potential interest in the industry. We encourage submissions where practical applications are presented, ranging from nanotechnology to large format additive manufacturing.

Dr. Alberto Sanz de León
Prof. Dr. Sergio I. Molina
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

  • additive manufacturing
  • 3D printing
  • mechanical properties
  • functional properties
  • composites
  • nanocomposites
  • fiber-reinforced polymers
  • polymer processing
  • material characterization

Published Papers (2 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

20 pages, 7698 KiB  
Article
Effect of Different Standard Geometry Shapes on the Tensile Properties of 3D-Printed Polymer
by Rawabe Fatima Faidallah, Muammel M. Hanon, Varun Vashist, Ahmad Habib, Zoltán Szakál and István Oldal
Polymers 2023, 15(14), 3029; https://doi.org/10.3390/polym15143029 - 13 Jul 2023
Cited by 1 | Viewed by 3957
Abstract
This study presents a comparative analysis of the tensile properties of 3D-printed polymer specimens with different standard geometry shapes. The objective is to assess the influence of printing orientation and geometry on the mechanical performance. Rectangular-shaped ASTM D3039 specimens with angles of 0°, [...] Read more.
This study presents a comparative analysis of the tensile properties of 3D-printed polymer specimens with different standard geometry shapes. The objective is to assess the influence of printing orientation and geometry on the mechanical performance. Rectangular-shaped ASTM D3039 specimens with angles of 0°, 15°, and 90° are compared to various tensile test specimens based on ASTM and ISO standards. All specimens are fabricated using polyethylene terephthalate glycol (PETG) material through fused deposition modeling (FDM). Two printing orientations, flat and on-edge, are investigated, and tensile strength, elastic modulus, strain, and elongation at break are measured. The study examines the weak spot commonly found at the neck of the specimens and evaluates the broken areas. Additionally, a numerical analysis using the finite element method (FEM) is performed to identify stress risers’ locations in each specimen type. Experimental results show that the ASTM D3039-0° specimen printed in the on-edge orientation exhibits the highest tensile properties, while the flat orientation yields the best results in terms of the broken area. The ISO 527-2 specimens consistently display lower tensile properties, irrespective of the printing orientation. The study highlights the enhanced tensile properties achieved with the rectangular shape. Specifically, the tensile strength of ASTM D3039-0° was 17.87% and 21% higher than that of the ISO 527 geometry shape for the flat and on-edge orientations, respectively. The numerical analysis indicated that the ISO 527-2 specimen had either no or minimal stress raisers, and the higher stresses observed in the narrow section were isolated from the gripping location. The findings contribute to understanding the relationship between standard geometry shapes, printing orientation, and the resulting tensile properties of 3D-printed polymer specimens. Full article
(This article belongs to the Special Issue Polymers and Polymer-Based Composites for Additive Manufacturing II)
►▼ Show Figures

Figure 1

13 pages, 7549 KiB  
Article
Manufacture and Characterization of Polylactic Acid Filaments Recycled from Real Waste for 3D Printing
by Saltanat Bergaliyeva, David L. Sales, Francisco J. Delgado, Saltanat Bolegenova and Sergio I. Molina
Polymers 2023, 15(9), 2165; https://doi.org/10.3390/polym15092165 - 1 May 2023
Cited by 11 | Viewed by 3539
Abstract
This paper studies the thermal, morphological, and mechanical properties of 3D-printed polylactic acid (PLA) blends of virgin and recycled material in the following proportions: 100/0, 25/75, 50/50, and 75/25, respectively. Real waste, used as recycled content, was shredded and sorted by size without [...] Read more.
This paper studies the thermal, morphological, and mechanical properties of 3D-printed polylactic acid (PLA) blends of virgin and recycled material in the following proportions: 100/0, 25/75, 50/50, and 75/25, respectively. Real waste, used as recycled content, was shredded and sorted by size without a washing step. Regular dog-bone specimens were 3D printed from filaments, manufactured in a single screw extruder. Thermogravimetric analysis indicated that adding PLA debris to raw material did not significantly impact the thermal stability of the 3D-printed samples and showed that virgin and recycled PLA degraded at almost the same temperature. Differential scanning calorimetry revealed a significant reduction in crystallinity with increasing recycled content. Scanning electron microscopy showed a more homogenous structure for specimens from 100% pure PLA, as well as a more heterogeneous one for PLA blends. The tensile strength of the PLA blends increased by adding more recycled material, from 44.20 ± 2.18 MPa for primary PLA to 52.61 ± 2.28 MPa for the blend with the highest secondary PLA content. However, this study suggests that the mechanical properties of the reprocessed parts and their basic association are unique compared with those made up of virgin material. Full article
(This article belongs to the Special Issue Polymers and Polymer-Based Composites for Additive Manufacturing II)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-2
Back to TopTop