Development of an extrudable paste to build mycelium-bound composites

Materials & Design

Hortense Le Ferrand¹  Alireza Javadian¹  Nazanin Saeidi²  Dirk Hebel²  Eugene Soh³  Zhi Yong Chew³ 

[1] Sustainable Construction, Faculty of Architecture, Karlsruhe Institute of Technology, Englestrasse 11, Karlsruhe 76131, Germany;Alternative Construction Materials, Future Cities Laboratory, Singapore-ETH Centre, 1 Create Way, 138602, Singapore;Nanyang Technological University, School of Materials Science and Engineering, 50, Faculty Avenue, 639798, Singapore;

关键词: Bio-composite;    Extrusion;    Mycelium;    Sustainability;    Bamboo;   

DOI  :  

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown