Robust Myco-Composites: A Biocomposite Platform for Versatile Hybrid-Living Materials

Fungal mycelium, a living network of filamentous threads, thrives on lignocellulosic waste and exhibits rapid growth, hydrophobicity, and intrinsic regeneration, offering a potential means to create next-generation sustainable and functional composites. However, existing hybrid-living mycelium compo...

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Main Authors: Shen, Sabrina C., Lee, Nicolas A., Lockett, William J., Acuil, Aliai D., Gazdus, Hannah B., Spitzera, Branden N., J. Buehler, Markus
Format: Article
Published: Royal Society of Chemistry 2024
Online Access:https://hdl.handle.net/1721.1/156712
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author Shen, Sabrina C.
Lee, Nicolas A.
Lockett, William J.
Acuil, Aliai D.
Gazdus, Hannah B.
Spitzera, Branden N.
J. Buehler, Markus
author_facet Shen, Sabrina C.
Lee, Nicolas A.
Lockett, William J.
Acuil, Aliai D.
Gazdus, Hannah B.
Spitzera, Branden N.
J. Buehler, Markus
author_sort Shen, Sabrina C.
collection MIT
description Fungal mycelium, a living network of filamentous threads, thrives on lignocellulosic waste and exhibits rapid growth, hydrophobicity, and intrinsic regeneration, offering a potential means to create next-generation sustainable and functional composites. However, existing hybrid-living mycelium composites (myco-composites) are tremendously constrained by conventional mold-based manufacturing processes, which are only compatible with simple geometries and coarse biomass substrates that enable gas exchange. Here we introduce a class of structural myco-composites manufactured with a novel platform that harnesses high-resolution biocomposite additive manufacturing and robust mycelium colonization with indirect inoculation. We leverage principles of hierarchical composite design and selective nutritional provision to create a robust myco-composite that is scalable, tunable, and compatible with complex geometries. To illustrate the versatility of this platform, we characterize the impact of mycelium colonization on mechanical and surface properties of the composite. We found that our method yields the strongest mycelium composite reported to date with a modulus of 160 MPa and tensile strength of 0.72 MPa, which represents over a 15-fold improvement over typical mycelium composites, and further demonstrate unique applications with fabrication of foldable bio-welded containers and flexible mycelium textiles. This study bridges the gap between biocomposite and hybrid-living materials research, opening the door to advanced structural mycelium applications and demonstrating a novel platform for development of diverse hybrid-living materials.
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spelling mit-1721.1/1567122024-09-13T03:57:02Z Robust Myco-Composites: A Biocomposite Platform for Versatile Hybrid-Living Materials Shen, Sabrina C. Lee, Nicolas A. Lockett, William J. Acuil, Aliai D. Gazdus, Hannah B. Spitzera, Branden N. J. Buehler, Markus Fungal mycelium, a living network of filamentous threads, thrives on lignocellulosic waste and exhibits rapid growth, hydrophobicity, and intrinsic regeneration, offering a potential means to create next-generation sustainable and functional composites. However, existing hybrid-living mycelium composites (myco-composites) are tremendously constrained by conventional mold-based manufacturing processes, which are only compatible with simple geometries and coarse biomass substrates that enable gas exchange. Here we introduce a class of structural myco-composites manufactured with a novel platform that harnesses high-resolution biocomposite additive manufacturing and robust mycelium colonization with indirect inoculation. We leverage principles of hierarchical composite design and selective nutritional provision to create a robust myco-composite that is scalable, tunable, and compatible with complex geometries. To illustrate the versatility of this platform, we characterize the impact of mycelium colonization on mechanical and surface properties of the composite. We found that our method yields the strongest mycelium composite reported to date with a modulus of 160 MPa and tensile strength of 0.72 MPa, which represents over a 15-fold improvement over typical mycelium composites, and further demonstrate unique applications with fabrication of foldable bio-welded containers and flexible mycelium textiles. This study bridges the gap between biocomposite and hybrid-living materials research, opening the door to advanced structural mycelium applications and demonstrating a novel platform for development of diverse hybrid-living materials. 2024-09-12T19:39:31Z 2024-09-12T19:39:31Z 2024-02-05 Article http://purl.org/eprint/type/JournalArticle 2051-6355 https://hdl.handle.net/1721.1/156712 Mater. Horiz., 2024, 11, 1689-1703 https://doi.org/10.1039/D3MH01277H Materials Horizons Creative Commons Attribution-Noncommercial https://creativecommons.org/licenses/by-nc/3.0/ application/pdf Royal Society of Chemistry Royal Society of Chemistry
spellingShingle Shen, Sabrina C.
Lee, Nicolas A.
Lockett, William J.
Acuil, Aliai D.
Gazdus, Hannah B.
Spitzera, Branden N.
J. Buehler, Markus
Robust Myco-Composites: A Biocomposite Platform for Versatile Hybrid-Living Materials
title Robust Myco-Composites: A Biocomposite Platform for Versatile Hybrid-Living Materials
title_full Robust Myco-Composites: A Biocomposite Platform for Versatile Hybrid-Living Materials
title_fullStr Robust Myco-Composites: A Biocomposite Platform for Versatile Hybrid-Living Materials
title_full_unstemmed Robust Myco-Composites: A Biocomposite Platform for Versatile Hybrid-Living Materials
title_short Robust Myco-Composites: A Biocomposite Platform for Versatile Hybrid-Living Materials
title_sort robust myco composites a biocomposite platform for versatile hybrid living materials
url https://hdl.handle.net/1721.1/156712
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