3D Printing Processability of a Thermally Conductive Compound Based on Carbon Nanofiller-Modified Thermoplastic Polyamide 12

Zhang, Zhenxue; Gkartzou, Eleni; Jestin, Simon; Semitekolos, Dionisis; Pappas, Panagiotis; Li, Xiaoying; Karatza, Anna; Zouboulis, Panagiotis; Trompeta, Aikaterini-Flora; Koutroumanis, Nikolaos; Galiotis, Costas; Charitidis, Costas A.; Dong, Hanshan

doi:10.3390/polym14030470

Cited by 8 publications

(3 citation statements)

References 29 publications

(36 reference statements)

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“…This study’s findings reveal that, in each case, the surface roughness rises as ZrO 2 nanoparticles are added to and increased in concentration in the corresponding polymer matrix. It is proposed that this rise in surface roughness may be due to the presence of nanoparticles on the filament’s surface and the flow behavior of the nanostructured material differs when subjected to different conformations of PA12 and PLA polymer chains, in contrast to the behavior observed in the pure polymeric materials [ 83 , 92 , 93 , 94 , 95 ].…”

Section: Resultsmentioning

confidence: 99%

The Effect of Nano Zirconium Dioxide (ZrO2)-Optimized Content in Polyamide 12 (PA12) and Polylactic Acid (PLA) Matrices on Their Thermomechanical Response in 3D Printing

et al. 2023

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The influence of nanoparticles (NPs) in zirconium oxide (ZrO2) as a strengthening factor of Polylactic Acid (PLA) and Polyamide 12 (PA12) thermoplastics in material extrusion (MEX) additive manufacturing (AM) is reported herein for the first time. Using a melt-mixing compounding method, zirconium dioxide nanoparticles were added at four distinct filler loadings. Additionally, 3D-printed samples were carefully examined for their material performance in various standardized tests. The unfilled polymers were the control samples. The nature of the materials was demonstrated by Raman spectroscopy and thermogravimetric studies. Atomic Force Microscopy and Scanning Electron Microscopy were used to comprehensively analyze their morphological characteristics. Zirconium dioxide NPs showed an affirmative reinforcement tool at all filler concentrations, while the optimized material was calculated with loading in the range of 1.0–3.0 wt.% (3.0 wt.% for PA12, 47.7% increase in strength; 1.0 wt.% for PLA, 20.1% increase in strength). PA12 and PLA polymers with zirconium dioxide in the form of nanocomposite filaments for 3D printing applications could be used in implementations using thermoplastic materials in engineering structures with improved mechanical behavior.

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Section: Resultsmentioning

confidence: 99%

The Effect of Nano Zirconium Dioxide (ZrO2)-Optimized Content in Polyamide 12 (PA12) and Polylactic Acid (PLA) Matrices on Their Thermomechanical Response in 3D Printing

et al. 2023

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“…Polyamide 11 (PA11) and thermoplastic polyurethane (TPU) powder were conducted in the 3D printing process of Multi Jet Fusion (MJF) ( Tey et al, 2021 ). Furthermore, a polyamide 12-based thermoplastic composite was modified with carbon nanotubes (CNTs), CNTs grafted onto chopped carbon fibers (CFs), and graphene nanoplatelets (GNPs) with CNTs to improve its thermal conductivity for application as a heat sink in electronic components ( Zhang et al, 2022b ).…”

Section: Polymer Materials For 3d Bio Printing Of Bone and Cartilagementioning

confidence: 99%

3D printing of bone and cartilage with polymer materials

Fan

Liu²,

Wang³

et al. 2022

Front. Pharmacol.

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Damage and degeneration to bone and articular cartilage are the leading causes of musculoskeletal disability. Commonly used clinical and surgical methods include autologous/allogeneic bone and cartilage transplantation, vascularized bone transplantation, autologous chondrocyte implantation, mosaicplasty, and joint replacement. 3D bio printing technology to construct implants by layer-by-layer printing of biological materials, living cells, and other biologically active substances in vitro, which is expected to replace the repair mentioned above methods. Researchers use cells and biomedical materials as discrete materials. 3D bio printing has largely solved the problem of insufficient organ donors with the ability to prepare different organs and tissue structures. This paper mainly discusses the application of polymer materials, bio printing cell selection, and its application in bone and cartilage repair.

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“…Given their superior properties, if introduced into the PP matrix, graphene-based nanofillers (e.g., graphene, graphene oxide, and reduced graphene oxide) can significantly improve the material characteristics (such as elastic, thermal, and electrical properties) even at small concentrations. − Graphene (Gr) is a carbon allotrope comprising covalently linked carbon atoms bonded via sp 2 orbitals and structured in a two-dimensional hexagonal lattice . Graphene oxide (GO) is a graphene derivative that has variable ratios of oxygen-rich functional groups on the basal plane and free edge, such as epoxide, carbonyl, carboxyl, and hydroxyl groups .…”

Section: Introductionmentioning

confidence: 99%

Mesoscopic Modeling and Experimental Validation of Thermal and Mechanical Properties of Polypropylene Nanocomposites Reinforced By Graphene-Based Fillers

Muhammad,

Srivastava,

Koutroumanis

et al. 2023

Macromolecules

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The development of nanocomposites relies on structure–property relations, which necessitate multiscale modeling approaches. This study presents a modeling framework that exploits mesoscopic models to predict the thermal and mechanical properties of nanocomposites starting from their molecular structure. In detail, mesoscopic models of polypropylene (PP)- and graphene-based nanofillers (graphene (Gr), graphene oxide (GO), and reduced graphene oxide (rGO)) are considered. The newly developed mesoscopic model for the PP/Gr nanocomposite provides mechanistic information on the thermal and mechanical properties at the filler–matrix interface, which can then be exploited to enhance the prediction accuracy of traditional continuum simulations by calibrating the thermal and mechanical properties of the filler–matrix interface. Once validated through a dedicated experimental campaign, this multiscale model demonstrates that with the modest addition of nanofillers (up to 2 wt %), the Young’s modulus and thermal conductivity show up to 35 and 25% enhancement, respectively, whereas the Poisson’s ratio slightly decreases. Among the different combinations tested, the PP/Gr nanocomposite shows the best mechanical properties, whereas PP/rGO demonstrates the best thermal conductivity. This validated mesoscopic model can contribute to the development of smart materials with enhanced mechanical and thermal properties based on polypropylene, especially for mechanical, energy storage, and sensing applications.

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3D Printing Processability of a Thermally Conductive Compound Based on Carbon Nanofiller-Modified Thermoplastic Polyamide 12

Cited by 8 publications

References 29 publications

The Effect of Nano Zirconium Dioxide (ZrO2)-Optimized Content in Polyamide 12 (PA12) and Polylactic Acid (PLA) Matrices on Their Thermomechanical Response in 3D Printing

The Effect of Nano Zirconium Dioxide (ZrO2)-Optimized Content in Polyamide 12 (PA12) and Polylactic Acid (PLA) Matrices on Their Thermomechanical Response in 3D Printing

3D printing of bone and cartilage with polymer materials

Mesoscopic Modeling and Experimental Validation of Thermal and Mechanical Properties of Polypropylene Nanocomposites Reinforced By Graphene-Based Fillers

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