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Accurate additive manufacturing of lightweight and elastic carbons using plastic precursors

Smith, Paul
; 
Hu, Jiayue
; 
Griffin, Anthony
; 
Robertson, Mark
; 
Obando, Alejandro Güillen
; 
Bounds, Ethan
; 
Dunn, Carmen B.
; 
Ye, Changhuai
; 
Liu, Ling
; 
Qiang, Zhe
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Journal article
Date
2024-01-29
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Mechanical Engineering
Subject
Composites
 Design synthesis and processing
 Mechanical properties
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https://scholarshare.temple.edu/handle/20.500.12613/11710
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HuEtAl-JournalArticle-2024-01.pdf
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https://doi.org/10.1038/s41467-024-45211-4
Abstract
Despite groundbreaking advances in the additive manufacturing of polymers, metals, and ceramics, scaled and accurate production of structured carbons remains largely underdeveloped. This work reports a simple method to produce complex carbon materials with very low dimensional shrinkage from printed to carbonized state (less than 4%), using commercially available polypropylene precursors and a fused filament fabrication-based process. The control of macrostructural retention is enabled by the inclusion of fiber fillers regardless of the crosslinking degree of the polypropylene matrix, providing a significant advantage to directly control the density, porosity, and mechanical properties of 3D printed carbons. Using the same printed plastic precursors, different mechanical responses of derived carbons can be obtained, notably from stiff to highly compressible. This report harnesses the power of additive manufacturing for producing carbons with accurately controlled structure and properties, while enabling great opportunities for various applications.
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Citation
Smith, P., Hu, J., Griffin, A. et al. Accurate additive manufacturing of lightweight and elastic carbons using plastic precursors. Nat Commun 15, 838 (2024). https://doi.org/10.1038/s41467-024-45211-4
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Springer Science and Business Media
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Nature Communications, Vol. 15, Iss. 1
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