3D structured nanocomposites by FDM process: a novel approach for large-scale photocatalytic applications

Viskadourakis, Z.; Sevastaki, Maria; Kenanakis, George

doi:10.1007/s00339-018-2014-6

Cited by 38 publications

(20 citation statements)

References 48 publications

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“…The most common polymers that are printed via FFF are acrylonitrile-butadiene-styrene (ABS) [ 18 , 19 , 20 ], and poly(lactic acid) (PLA) [ 21 , 22 , 23 ]. However, other polymers such as poly(ether imide) (PEI) [ 24 , 25 , 26 ], polycarbonate (PC) [ 27 , 28 , 29 ], polystyrene (PS) [ 30 , 31 ], polyamide (PA) [ 32 , 33 , 34 ], polypropylene (PP) [ 35 , 36 , 37 ],poly(vinyl alcohol) (PVA) [ 38 , 39 , 40 , 41 ], polyethylene (PE) [ 42 , 43 ], polycaprolactone (PCL) [ 44 , 45 ], polyphenylene sulfide (PPS) [ 46 ], and polymer blends [ 47 , 48 , 49 , 50 , 51 ] have been also studied.…”

Section: Introductionmentioning

confidence: 99%

Fused Filament Fabrication of PEEK: A Review of Process-Structure-Property Relationships

et al. 2020

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Poly (ether ether ketone) (PEEK) is a high-performance engineering thermoplastic polymer with potential for use in a variety of metal replacement applications due to its high strength to weight ratio. This combination of properties makes it an ideal material for use in the production of bespoke replacement parts for out-of-earth manufacturing purposes, in particular on the International Space Station (ISS). Additive manufacturing (AM) may be employed for the production of these parts, as it has enabled new fabrication pathways for articles with complex design considerations. However, AM of PEEK via fused filament fabrication (FFF) encounters significant challenges, mostly stemming from the semi crystalline nature of PEEK and its associated high melting temperature. This makes PEEK highly susceptible to changes in processing conditions which leads to a large reported variation in the literature on the final performance of PEEK. This has limited the adaption of FFF printing of PEEK in space applications where quality assurance and reproducibility are paramount. In recent years, several research studies have examined the effect of printing parameters on the performance of the 3D-printed PEEK parts. The aim of the current review is to provide comprehensive information in relation to the process-structure-property relationships in FFF 3D-printing of PEEK to provide a clear baseline to the research community and assesses its potential for space applications, including out-of-earth manufacturing.

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Section: Introductionmentioning

confidence: 99%

Fused Filament Fabrication of PEEK: A Review of Process-Structure-Property Relationships

et al. 2020

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“…TiO 2 NPs were also found to increase the dielectric properties of polymers for application in insulating materials [ 26 ]. Moreover, TiO 2 nanocomposites can be employed in photocatalytic applications as environment organic pollutants degradants [ 27 , 28 ]. Therefore, ABS-TiO 2 nanocomposites are envisaged to find various applications, i.e., (i) increase the mechanical performance of the pure polymer thermoplastic matrix, (ii) induce dielectric properties with remarkable and variable responses to electrical fields, and (iii) used as self-cleaning materials due to the pronounced photocatalytic properties of TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of 3D-Printed Acrylonitrile–Butadiene–Styrene TiO2 and ATO Nanocomposites

et al. 2020

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In order to enhance the mechanical performance of three-dimensional (3D) printed structures fabricated via commercially available fused filament fabrication (FFF) 3D printers, novel nanocomposite filaments were produced herein following a melt mixing process, and further 3D printed and characterized. Titanium Dioxide (TiO2) and Antimony (Sb) doped Tin Oxide (SnO2) nanoparticles (NPs), hereafter denoted as ATO, were selected as fillers for a polymeric acrylonitrile butadiene styrene (ABS) thermoplastic matrix at various weight % (wt%) concentrations. Tensile and flexural test specimens were 3D printed, according to international standards. It was proven that TiO2 filler enhanced the overall tensile strength by 7%, the flexure strength by 12%, and the micro-hardness by 6%, while for the ATO filler, the corresponding values were 9%, 13%, and 6% respectively, compared to unfilled ABS. Atomic force microscopy (AFM) revealed the size of TiO2 (40 ± 10 nm) and ATO (52 ± 11 nm) NPs. Raman spectroscopy was performed for the TiO2 and ATO NPs as well as for the 3D printed nanocomposites to verify the polymer structure and the incorporated TiO2 and ATO nanocrystallites in the polymer matrix. The scope of this work was to fabricate novel nanocomposite filaments using commercially available materials with enhanced overall mechanical properties that industry can benefit from.

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“…Considering the above, the employment of the FDM method in the fabrication of flexible, stand-alone (no rigid substrate is necessary), fabric-like metasurfaces for microwave applications [ 25 , 26 , 27 , 28 , 29 , 30 ], appears to be a challenging, but promising idea. The challenge lies in the filament materials.…”

Section: Introductionmentioning

confidence: 99%

Flexible 3D Printed Conductive Metamaterial Units for Electromagnetic Applications in Microwaves

et al. 2020

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In this work we present a method for fabricating three dimensional, ultralight and flexible millimeter metamaterial units using a commercial household 3D printer. The method is low-cost, fast, eco-friendly and accessible. In particular, we use the Fused Deposition Modeling 3D printing technique and we fabricate flexible conductive Spilt Ring Resonators (SRRs) in a free-standing form. We characterized the samples experimentally through measurements of their spectral transmission, using standard rectangular microwave waveguides. Our findings show that the resonators produce well defined resonant electromagnetic features that depend on the structural details and the infiltrating dielectric materials, indicating that the thin, flexible and light 3D printed structures may be used as electromagnetic microwave components and electromagnetic fabrics for coating a variety of devices and infrastructure units, while adapting to different shapes and sizes.

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3D structured nanocomposites by FDM process: a novel approach for large-scale photocatalytic applications

Cited by 38 publications

References 48 publications

Fused Filament Fabrication of PEEK: A Review of Process-Structure-Property Relationships

Fused Filament Fabrication of PEEK: A Review of Process-Structure-Property Relationships

Mechanical Properties of 3D-Printed Acrylonitrile–Butadiene–Styrene TiO2 and ATO Nanocomposites

Flexible 3D Printed Conductive Metamaterial Units for Electromagnetic Applications in Microwaves

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