Structure and evolution of multiphase composites for 3D printing

Lyu, Yang; Yin, Hao; Chen, Yanlu; Zhang, Qingliang; Shi, Xinyan

doi:10.1007/s10853-020-04505-w

Cited by 14 publications

(11 citation statements)

References 31 publications

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“…The Cl element has a concentration of 57.37 wt %, followed by C, Ag, and Ti, with concentrations of 35.91, 4.93, and 1.97 wt %, respectively. It is reasonable for the high concentration of Cl and C elements since they are PVC’s main components. , Furthermore, the Ag concentration was higher than Ti due to the amount of Ag being higher than Ti in the precursor solution. Similar results have been reported by Lubasova and Barbora (2014) …”

Section: Resultsmentioning

confidence: 99%

Electrospun Nanofibers from Waste Polyvinyl Chloride Loaded Silver and Titanium Dioxide for Water Treatment Applications

Zulfi,

Hartati,

Nur’aini

et al. 2023

ACS Omega

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The electrospun nanofiber membrane from polyvinyl chloride (PVC) waste for water treatment applications has been successfully produced. The PVC precursor solution was prepared by dissolving the PVC waste in DMAc solvent, and a centrifuge was used to separate undissolved materials from the precursor solution. Ag and TiO2 were added to the precursor solution before the electrospinning process. We studied the fabricated PVC membranes using SEM, EDS, XRF, XRD, and FTIR to study the fiber and membrane properties. The SEM images depicted that Ag and TiO2 addition has changed the morphology and size of fibers. The EDS images and XRF spectra confirmed the presence of Ag and TiO2 on the nanofiber membrane. The XRD spectra showed the amorphous structure of all membranes. The FTIR result indicated that the solvent completely evaporated throughout the spinning process. The fabricated PVC@Ag/TiO2 nanofiber membrane showed the photocatalytic degradation of dyes under visible light. The filtration test on the membrane PVC and PVC@Ag/TiO2 depicted that the presence of Ag and TiO2 affected the flux and separation factor of the membrane.

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Section: Resultsmentioning

confidence: 99%

Electrospun Nanofibers from Waste Polyvinyl Chloride Loaded Silver and Titanium Dioxide for Water Treatment Applications

Zulfi,

Hartati,

Nur’aini

et al. 2023

ACS Omega

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“…The co-continuous structure can help in increasing the printing performance and the possibility to produce conductive composites at low percolation thresholds [ 31 , 82 , 106 ]. Thus, several composites containing 10 wt.% of GNP and different proportions of PLA and PCL were prepared through fused filament fabrication (FFF).…”

Section: Resultsmentioning

confidence: 99%

Influence of Polymer Processing on the Double Electrical Percolation Threshold in PLA/PCL/GNP Nanocomposites

Masarra¹,

Quantin²,

Batistella³

et al. 2022

Sensors

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For the first time, the double electrical percolation threshold was obtained in polylactide (PLA)/polycaprolactone (PCL)/graphene nanoplatelet (GNP) composite systems, prepared by compression moulding and fused filament fabrication (FFF). Using scanning electron microscopy (SEM) and atomic force microscopy (AFM), the localisation of the GNP, as well as the morphology of PLA and PCL phases, were evaluated and correlated with the electrical conductivity results estimated by the four-point probe method electrical measurements. The solvent extraction method was used to confirm and quantify the co-continuity in these samples. At 10 wt.% of the GNP, compression-moulded samples possessed a wide co-continuity range, varying from PLA55/PCL45 to PLA70/PCL30. The best electrical conductivity results were found for compression-moulded and 3D-printed PLA65/PCL35/GNP that have the fully co-continuous structure, based on the experimental and theoretical findings. This composite owns the highest storage modulus and complex viscosity at low angular frequency range, according to the melt shear rheology. Moreover, it exhibited the highest char formation and polymers degrees of crystallinity after the thermal investigation by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), respectively. The effect of the GNP content, compression moulding time, and multiple twin-screw extrusion blending steps on the co-continuity were also evaluated. The results showed that increasing the GNP content decreased the continuity of the polymer phases. Therefore, this work concluded that polymer processing methods impact the electrical percolation threshold and that the 3D printing of polymer composites entails higher electrical resistance as compared to compression moulding.

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“…In this method, the thermoplastic filament is fed into a heated nozzle, melted, and subsequently extruded and deposited layer by layer onto a build plate forming the desired 3D part [ 9 , 10 ]. Various thermoplastics and composites are currently used to produce 3D parts satisfactorily by the FFF process [ 11 , 12 , 13 ]. In the latter, multiple controllable printing parameters, such as liquefier and platform temperature, print speed, raster angle, and layer thickness, are accounted to produce highly qualified 3D-printed parts.…”

Section: Introductionmentioning

confidence: 99%

“…Most studies reported the dependence between the mechanical properties and the selected printing parameters [14][15][16][17][18][19][20]. Besides, there are Polymers 2021, 13, 3218 2 of 16 numerous research projects on thermoplastics such as polycarbonate (PC), acrylonitrile butadiene styrene (ABS), and polylactic acid (PLA) to estimate and analyze their mechanical properties and especially fatigue analysis. Accordingly, several studies were performed in consideration of the effect of process parameters on the 3D-printed structures [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

An Investigation to Study the Effect of Process Parameters on the Strength and Fatigue Behavior of 3D-Printed PLA-Graphene

et al. 2021

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3D printing, an additive manufacturing process, draws particular attention due to its ability to produce components directly from a 3D model; however, the mechanical properties of the produced pieces are limited. In this paper, we present, from the experimental aspect, the fatigue behavior and damage analysis of polylactic acid (PLA)-Graphene manufactured using 3D printing. The main purpose of this paper is to analyze the combined effect of process parameters, loading amplitude, and frequency on fatigue behavior of the 3D-printed PLA-Graphene specimens. Firstly, a specific case study (single printed filament) was analyzed and compared with spool material for understanding the nature of 3D printing of the material. Specific experiments of quasi-static tensile tests are performed. A strong variation of fatigue strength as a function of the loading amplitude, frequency, and process parameters is also presented. The obtained experimental results highlight that fatigue lifetime clearly depends on the process parameters as well as the loading amplitude and frequency. Moreover, when the frequency is 80 Hz, the coupling effect of thermal and mechanical fatigue causes self-heating, which decreases the fatigue lifetime. This paper comprises useful data regarding the mechanical behavior and fatigue lifetime of 3D-printed PLA-Graphene specimens. In fact, it evaluates the effect of process parameters based on the nature of this process, which is classified as a thermally-driven process.

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Structure and evolution of multiphase composites for 3D printing

Cited by 14 publications

References 31 publications

Electrospun Nanofibers from Waste Polyvinyl Chloride Loaded Silver and Titanium Dioxide for Water Treatment Applications

Electrospun Nanofibers from Waste Polyvinyl Chloride Loaded Silver and Titanium Dioxide for Water Treatment Applications

Influence of Polymer Processing on the Double Electrical Percolation Threshold in PLA/PCL/GNP Nanocomposites

An Investigation to Study the Effect of Process Parameters on the Strength and Fatigue Behavior of 3D-Printed PLA-Graphene

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