Enhanced mechanical properties of self-polymerized polydopamine-coated recycled PLA filament used in 3D printing

Zhao, Xiaojing; Hwang, Kyu Hong; Lee, Dong‐Oh; Kim, Taemin; Kim, Namsu

doi:10.1016/j.apsusc.2018.01.257

Cited by 103 publications

(74 citation statements)

References 35 publications

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“…The PDA coated polymer is thermal-stable up to 200°C. It possesses higher tensile strength and strain at break, and its surface exhibits higher adhesion than uncoated PLA (Zhao et al 2018b). Anderson (2017) proposed direct recycling of the utilized PLA filament through its ground up and re-extrusion into 3D printing filament.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

3D printing filament as a second life of waste plastics—a review

Mikula

Skrzypczak

Izydorczyk

et al. 2020

Environ Sci Pollut Res

234

111

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In recent times, the issue of plastic recycling has become one of the leading issues of environmental protection and waste management. Polymer materials have been found an application in many areas of daily life and industry. Along with their extended use, the problem of plastic wastes appeared because, after withdrawal from use, they became persistent and noxious wastes. The possibility of reusing polymeric materials gives a possibility of valorization-a second life-and enables effective waste utilization to obtain consumable products. The 3D printing market is a well-growing sector. Printable filaments can be made from a variety of thermoplastic materials, including those from recycling. This paper focuses on a review of the available literature on the production of filaments for 3D printers from recycled polymers as the alternative to present approach of central selective collection of plastics. The possibility of recycling of basic thermoplastic materials and the impact of processing on their physicochemical and mechanical properties were verified (Lanzotti et al. 2019). In addition, commercially available filaments produced from recycled materials and devices which allow self-production of filaments to 3D printing from plastic waste were reviewed.

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Section: Mechanical Propertiesmentioning

confidence: 99%

3D printing filament as a second life of waste plastics—a review

Mikula

Skrzypczak

Izydorczyk

et al. 2020

Environ Sci Pollut Res

234

111

View full text Add to dashboard Cite

show abstract

“…4,5 Fortunately, the rise of economically competitive distributed manufacturing with three-dimensional (3D) printers [6][7][8][9][10] offers the potential to manufacture products close to consumers and even in their own homes with reduced environmental impacts. 11,12 The development of the opensource waste plastic extruder that produces filament for 3D printing (recyclebot) 13 offers the potential for distributed recycling 14 with an improved environmental 11,[15][16][17] as well as economic performance. 18 Due to the introduction of the open-source self-replicating rapid prototyper (RepRap), [19][20][21] the dominant technology of 3D printing is fused filament fabrication (FFF) using polylactic acid (PLA).…”

Section: Introductionmentioning

confidence: 99%

“…14,[23][24][25][26] However, PLA degrades with each cycle through the print/grind/extrude to filament/print loop. 14,23,27 This issue can be partially controlled by adding virgin PLA to recycled PLA, 14,23 coatings, 17 or carbon fiber reinforcement. 28 In addition, material extrusion 3D printers that can print directly from pellets of plastic have been developed [29][30][31][32][33] and commercialized (e.g., David, Erecto-Struder, Giga-botX, Cheetah Pro, Part Daddy).…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Direct Waste Printing of Polylactic Acid with Universal Pellets Extruder: Comparison to Fused Filament Fabrication on Open-Source Desktop Three-Dimensional Printers

Alexandre

Sanchez

Boudaoud

et al. 2020

3D Printing and Additive Manufacturing

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Fused filament fabrication (FFF) is the most common and widespread additive manufacturing (AM) technique, but it requires the formation of filament. Fused granular fabrication (FGF), where plastic granules are directly three-dimensional (3D) printed, has become a promising technique for the AM technology. FGF could be a key driver to promote further greening of distributed recycling thanks to the reduced melt solidification steps and elimination of the filament extruder system. However, only large-scale FGF systems have been tested for technical and economic viability of recycling plastic materials. The objective of this work is to evaluate the performance of the FFF and FGF techniques in terms of technical and economical dimensions at the desktop 3D printing scale. Recycled and virgin polylactic acid material was studied by using five different types of recycling feedstocks: commercial filament, pellets, distributed filament, distributed pellets, and shredded waste. The results showed that the mechanical properties from the FGF technique using same configurations showed no statistical differences to FFF samples. Nevertheless, the granulometry could have an influence on the reproducibility of the samples, which explains that the critical factor in this technology is to assure the material input in the feeding system. In addition, FGF costs per kg of material were reduced to less than 1 e/kg compared with more than 20 e/kg for commercial recycled filament. These results are encouraging to foster FGF printer diffusion among heavy users of 3D printers because of reducing the cost associated to the filament fabrication while ensuring the technical quality. This indicates the possibility of a new type of 3D printing recycled plastic waste that is more likely to drive a circular economy and distributed recycling.

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“…Therefore, various methods need to be adopted to improve product quality. Two methods are currently used: improvement of the material, [64][65][66][67][68] and improvement of the process parameters. [69,70]…”

Section: Fused Deposition Moldingmentioning

confidence: 99%

Recent Progress on 3D‐Printed Polylactic Acid and Its Applications in Bone Repair

Chen

Wang

et al. 2019

Adv Eng Mater

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3D printing is an additive manufacturing (AM) technology that has developed rapidly in the past decades due to its advantages, such as freedom of design, mass customization, waste minimization, and the ability to manufacture complex structures, as well as fast prototyping. Various materials are used in 3D printing, including metals, polymers, ceramics, concrete, and their composites. The polymer's easy processing makes it stands out among many materials. As a thermoplastic polymer, polylactic acid (PLA) received more attention as an effective biomedical material due to its proven biodegradation and biocompatibility. Herein, the development of 3D-printing technology is summarized and various applications of 3D-printed PLA and their composites in orthopedics are introduced. Furthermore, the current limitations and future opportunities in 3D printing are also discussed to help guide the 3D-printing development and improve 3D-printing strategies in orthopedic.

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Enhanced mechanical properties of self-polymerized polydopamine-coated recycled PLA filament used in 3D printing

Cited by 103 publications

References 35 publications

3D printing filament as a second life of waste plastics—a review

3D printing filament as a second life of waste plastics—a review

Mechanical Properties of Direct Waste Printing of Polylactic Acid with Universal Pellets Extruder: Comparison to Fused Filament Fabrication on Open-Source Desktop Three-Dimensional Printers

Recent Progress on 3D‐Printed Polylactic Acid and Its Applications in Bone Repair

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