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Polymers
Special Issues
Development of Polymeric Composites in 3D Printing
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Development of Polymeric Composites in 3D Printing

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

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 3389

Special Issue Editors

Dr. Xiping Li

E-Mail Website
Guest Editor
Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology & Equipment of Zhejiang Province, College of Engineering, Zhejiang Normal University, Jinhua 321004, China
Interests: polymer processing; additive manufacturing; composite material and structure
Dr. Zhonglue Hu

E-Mail Website
Guest Editor
Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology & Equipment of Zhejiang Province, Zhejiang Normal University, Jinhua 321004, China
Interests: screw-based extrusion; carbon-fiber-reinforced thermoplastics; 3D printing
Dr. Sisi Wang

E-Mail Website
Guest Editor
Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology & Equipment of Zhejiang Province, College of Engineering, Zhejiang Normal University, Jinhua 321004, China
Interests: continuous fiber; 3D printing; biodegradable polymers
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Additive manufacturing (AM), or 3D printing, is considered a paradigm-shifting technology in the manufacturing industry. By depositing feedstock materials layer-upon-layer, 3D printing technology circumvents the necessity of mould, and thus enables higher efficiencies and higher customizability for manufacturing geometrically complex components than the conventional approaches. Among all the 3D-printable materials, polymers and their composites are gaining more attention, partially due to their highly tailorable physical and chemical properties. Recent developments in 3D printing technologies and polymer composites have yielded exciting progress, as well as rich opportunities for constructing high-performance composite components for a wide range of structural and functional applications.

Therefore, this Special Issue aims to highlight the current research frontiers in the development of polymer composites in 3D printing (including new composite compositions; new printing strategies; 3D-printing-facilitated composite designs and structures; the application-led and/or performance-driven optimization of 3D-printed composites; and breakthroughs in the mechanical, electrical, thermal, and other functional properties of 3D-printed composites). This Special Issue will hopefully incite new ideas on the 3D printing of polymer composites for future research. 

Dr. Xiping Li
Dr. Zhonglue Hu
Dr. Sisi Wang
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 composites design
  • 3D printing (or additive manufacturing)
  • mechanical properties
  • carbon-fiber-reinforced thermoplastics (CFRPs)
  • continuous fiber
  • fused deposition modelling
  • composite structures

Published Papers (2 papers)

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Research

11 pages, 17551 KiB  
Article
Compatibilizing Biodegradable Poly(lactic acid)/polybutylene adipate-co-terephthalate Blends via Reactive Graphene Oxide for Screw-Based 3D Printing
by Wei Yu, Zhonglue Hu, Ye Zhang, Yakuang Zhang, Weiping Dong, Xiping Li and Sisi Wang
Polymers 2023, 15(19), 3992; https://doi.org/10.3390/polym15193992 - 4 Oct 2023
Cited by 1 | Viewed by 1135
Abstract
Vinyl-functionalized graphene oxide (VGO) was used as a reactive compatibilizer to prepare poly(lactic acid)/polybutylene adipate-co-terephthalate (PLA/PBAT) blends. The linear rheological and scanning electron microscopy results confirmed that the VGO nanosheets were quite efficient in compatibilizing PLA/PBAT blends. The size of the PBAT dispersed [...] Read more.
Vinyl-functionalized graphene oxide (VGO) was used as a reactive compatibilizer to prepare poly(lactic acid)/polybutylene adipate-co-terephthalate (PLA/PBAT) blends. The linear rheological and scanning electron microscopy results confirmed that the VGO nanosheets were quite efficient in compatibilizing PLA/PBAT blends. The size of the PBAT dispersed phase was remarkably decreased in the presence of VGO nanosheets. Moreover, the VGO nanosheets exhibited strong nucleating effects on the crystallization process of PLA. The crystallinity of PLA component in the compatibilized blend with various VGO nanosheets was higher than 40%, upon the cooling rate of 20 °C/min. The prepared PLA/PBAT pellets were applied to 3D printing, using a self-developed screw-based 3D printer. The results showed that all the prepared PLA/PBAT blend pellets can be 3D printed successfully. The notched Izod impact test results showed that, in the presence of VGO, an increase of at least 142% in impact strength was achieved for PLA/PBAT blend. This could be attributed to the compatibilizing effect of the VGO nanosheets. Thus, this work provides a novel way to prepare tough PLA-based materials for 3D printing. Full article
(This article belongs to the Special Issue Development of Polymeric Composites in 3D Printing)
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18 pages, 11756 KiB  
Article
Evaluation of the Effects of Different Polishing Protocols on the Surface Characterizations of 3D-Printed Acrylic Denture Base Resins: An In Vitro Study
by Yousif A. Al-Dulaijan
Polymers 2023, 15(13), 2913; https://doi.org/10.3390/polym15132913 - 30 Jun 2023
Cited by 2 | Viewed by 1845
Abstract
Chairside polishing kits are an alternative to laboratory polishing techniques. The effects of using a chairside polishing kit on a three-dimensional (3D)-printed acrylic denture base (ADB) have not been reported previously. Thus, this study aimed to evaluate the effects of different chairside polishing [...] Read more.
Chairside polishing kits are an alternative to laboratory polishing techniques. The effects of using a chairside polishing kit on a three-dimensional (3D)-printed acrylic denture base (ADB) have not been reported previously. Thus, this study aimed to evaluate the effects of different chairside polishing techniques on the surface characterizations of ABD, including surface roughness average (Ra), average maximum profile height (Rz), and scanning electron microscopy (SEM) representations. One hundred and twenty disc-shaped specimens were fabricated from one conventional heat-polymerized (HP) ADB resin and two 3D-printed (Asiga (AS) and NextDent (ND)) ADB resins (n = 40 per material). Each group was further divided based on the polishing protocol (n = 10) as follows: conventional polishing protocol (C), microdont chairside polishing kit (M), shofu chairside polishing kit (S), and an unpolished group (U). The Ra and Rz values were measured using an optical profilometer. Two-way ANOVA and post hoc tests were used for data analysis (α = 0.05) at significant levels. In unpolished groups, there was a statistically significant difference between HP-U vs. AS-U and ND-U groups (p < 0.0001). For Ra, the lowest values were observed in HP-C, AS-S, and ND-C. While the highest values were shown in all unpolished groups. Within the material, there were statistically significant differences between the three polishing protocols (C, M, and S) vs. unpolished (p < 0.0001), while there was no significant between C, M, and S groups (p = 0.05). The Rz values had the same pattern as the Ra values. The two chairside polishing kits were comparable to conventional polishing techniques, and they can be recommended for clinical application. Full article
(This article belongs to the Special Issue Development of Polymeric Composites in 3D Printing)
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