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Development of an extrudable paste to build mycelium-bound composites

Soh, E.; Chew, Z. Y.; Saeidi, Nazanin; Javadian, Alireza; Hebel, Dirk; Le Ferrand, H.

Abstract:
Mycelium-bound composites are promising materials for sustainable packaging, insulation, fashion, and architecture. However, moulding is the main fabrication process explored to date, strongly limiting the ability to design the complex shapes that could widen the range of applications. Extrusion is a facile and low energy-cost process that has not yet been explored for mycelium-bound composites with design freedom and structural properties. In this study, we combine cheap, easily and commonly available agricultural waste materials, bamboo microfibres, chitosan, and mycelium from Ganodermalucidum, to establish a composite mixture that is workable, extrudable and buildable. We study the impact of bamboo fibre size, chitosan concentration, pH and weight ratio of bamboo to chitosan to determine the optimum growth condition for the mycelium as well as high mechanical stiffness. The resulting materials have thus low energy costs, are sustainable and can be shaped easily. The developed composition is promising to further explore the use of mycelium-bound materials for structural applications using agricultural waste.

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Verlagsausgabe §
DOI: 10.5445/IR/1000123509
Veröffentlicht am 24.09.2020
Originalveröffentlichung
DOI: 10.1016/j.matdes.2020.109058
Cover der Publikation
Zugehörige Institution(en) am KIT Institut Entwerfen und Bautechnik (IEB)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 0141-5530, 0261-3069, 0264-1275, 1873-4197, 1878-2876
KITopen-ID: 1000123509
Erschienen in Materials and design
Band 195
Seiten Art.-Nr.: 109058
Schlagwörter Bio-composite; Extrusion; Mycelium; Sustainability; Bamboo
Nachgewiesen in Scopus
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