Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/163986
Title: Woodpile structural designs to increase the stiffness of mycelium-bound composites
Authors: Soh, Eugene
Le Ferrand, Hortense
Keywords: Engineering::Materials::Biomaterials
Issue Date: 2023
Source: Soh, E. & Le Ferrand, H. (2023). Woodpile structural designs to increase the stiffness of mycelium-bound composites. Materials and Design, 225, 111530-. https://dx.doi.org/10.1016/j.matdes.2022.111530
Project: Future Cities Laboratory Global
Journal: Materials and Design
Abstract: Mycelium-bound composites are biodegradable, eco-friendly materials grown by fungi onto solid lignocellulosic substrates. Mycelium is an interconnected network made of fungal cells that bind the substrates’ particulates together. Uncompressed mycelium-bound composites have typically weak mechanical properties, similar to that of expanded polystyrene. In this paper, mycelium is grown onto porous woodpile struts structures to increase the final mechanical properties. The hypothesis is that increase in porosity can increase oxygen diffusion throughout the material and increase the development of dense mycelium network. Mycelium-bound composites grown from P. ostreatus onto bamboo microfibers substrates were studied to test this hypothesis. Constructing porous woodpile structures and monitoring the growth and the mechanical properties under compression, it was found that the porosity obtained through the design was able to increase dense fungal mycelium skin formation. As a result, the stiffness of the porous structures was multiplied by 6 after 28 days of growth. The specific modulus was in turned multiplied by 4 with the addition of 30 % macroscopic porosity. Despite the modest mechanical properties (stiffness about 0.5 MPa), the approach proposed illustrates how appropriate structural design can efficiently increase the properties of grown bio-based materials.
URI: https://hdl.handle.net/10356/163986
ISSN: 0264-1275
DOI: 10.1016/j.matdes.2022.111530
Schools: School of Mechanical and Aerospace Engineering 
School of Materials Science and Engineering 
Rights: © 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles
MSE Journal Articles

Files in This Item:
File Description SizeFormat 
Paper2023.pdf3.96 MBAdobe PDFThumbnail
View/Open

SCOPUSTM   
Citations 50

6
Updated on Feb 24, 2024

Page view(s)

117
Updated on Feb 24, 2024

Download(s) 50

49
Updated on Feb 24, 2024

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.