Effect of Composition Strategies on Mycelium-Based Composites Flexural Behaviour.

Area of Science:

• Materials Science
• Biotechnology
• Sustainable Materials

Background:

• Mycelium-based composites (MBC) offer a sustainable, bio-based alternative to conventional materials.
• Current challenges include standardizing production and improving mechanical properties.
• Biological growth offers a circular economy approach compared to geosphere extraction.

Purpose of the Study:

• To investigate the mechanical properties of mycelium-based composites.
• To evaluate the effectiveness of fiber reinforcement (hessian and rattan) on flexural strength and stiffness.
• To compare the performance of reinforced MBC against established materials like Medium-Density Fibreboard (MDF).

Main Methods:

• Flexural tests were conducted on four MBC models following ASTM D1037 standards.
• Models included a control group, inner hessian, hessian jacketing, and rattan fibers.
• Flexural modulus and modulus of rupture were measured and statistically analyzed (α = 0.05).

Main Results:

• Hessian jacketing and rattan fiber reinforcement significantly increased MBC strength and stiffness.
• The rattan series achieved a flexural modulus of 1.34 GPa.
• Despite improvements, reinforced MBC remain less stiff and strong than MDF.

Conclusions:

• Fiber reinforcement strategies, particularly rattan and hessian jacketing, enhance MBC mechanical performance.
• Further research into hybrid composition and densification methods is needed to improve strength and stiffness.
• MBC show promise for sustainable material applications, but require further development for widespread use.