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Article

Thermomechanical Multifunctionality in 3D-Printed Polystyrene-Boron Nitride Nanotubes (BNNT) Composites

1
Department of Industrial and Manufacturing Engineering, FAMU-FSU College of Engineering, 2525 Pottsdamer St., Tallahassee, FL 32310, USA
2
High-Performance Materials Institute, 2005 Levy Ave, Tallahassee, FL 32310, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Tien-Thinh Le and Goshtasp Cheraghian
J. Compos. Sci. 2021, 5(2), 61; https://doi.org/10.3390/jcs5020061
Received: 18 November 2020 / Revised: 10 February 2021 / Accepted: 13 February 2021 / Published: 20 February 2021
(This article belongs to the Special Issue Multiscale Analysis of Polymer Nanocomposites)
In this work, polystyrene (PS) and boron nitrides nanotubes (BNNT) composites were fabricated, prepared, and characterized using modified direct mixing and sonication processes. The polymer composites were extruded into filaments (BNNTs at 10 wt. %) for 3D printing, utilizing the fused deposition modeling (FDM) technique to fabricate parts for mechanical and thermal applications. Using a direct mixing process, we found that the thermal conductivity and the mechanical strength of the PS-BNNT composite were respectively four times and two times higher compared to the sonication method. The thermal stability and glass transition temperatures were positively affected. A 2D microstructural mechanical entanglement model captured the exact geometry of the nanotubes using the MultiMechanics software, and the performance of the additive manufactured (AM) PS-BNNT composites part for thermomechanical application was simulated in COMSOL. The modified direct mixing process for PS-BNNT, which affects morphology, proved to be effective in achieving better interfacial bonding, indicating that BNNTs are promising fillers for improving thermal and mechanical properties, and are applicable for thermal management and electronic packaging. View Full-Text
Keywords: additive manufacturing; fused deposition modeling technique; polymer-matrix composite; boron nitride nanotubes; sonication; direct mixing; thermal properties; mechanical properties additive manufacturing; fused deposition modeling technique; polymer-matrix composite; boron nitride nanotubes; sonication; direct mixing; thermal properties; mechanical properties
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MDPI and ACS Style

Akintola, T.M.; Tran, P.; Downes Sweat, R.; Dickens, T. Thermomechanical Multifunctionality in 3D-Printed Polystyrene-Boron Nitride Nanotubes (BNNT) Composites. J. Compos. Sci. 2021, 5, 61. https://doi.org/10.3390/jcs5020061

AMA Style

Akintola TM, Tran P, Downes Sweat R, Dickens T. Thermomechanical Multifunctionality in 3D-Printed Polystyrene-Boron Nitride Nanotubes (BNNT) Composites. Journal of Composites Science. 2021; 5(2):61. https://doi.org/10.3390/jcs5020061

Chicago/Turabian Style

Akintola, Tawakalt M., Phong Tran, Rebekah Downes Sweat, and Tarik Dickens. 2021. "Thermomechanical Multifunctionality in 3D-Printed Polystyrene-Boron Nitride Nanotubes (BNNT) Composites" Journal of Composites Science 5, no. 2: 61. https://doi.org/10.3390/jcs5020061

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