Fungal mycelium classified in different material families based on glycerol treatment

TY - JOUR

T1 - Fungal mycelium classified in different material families based on glycerol treatment

AU - Appels, Freek V.W.

AU - van den Brandhof, Jeroen G.

AU - Dijksterhuis, Jan

AU - de Kort, Gijs W.

AU - Wösten, Han A.B.

PY - 2020/6/26

Y1 - 2020/6/26

N2 - Fungal mycelium is an emerging bio-based material. Here, mycelium films are produced from liquid shaken cultures that have a Young’s modulus of 0.47 GPa, an ultimate tensile strength of 5.0 MPa and a strain at failure of 1.5%. Treating the mycelial films with 0–32% glycerol impacts the material properties. The largest effect is observed after treatment with 32% glycerol decreasing the Young’s modulus and the ultimate tensile strength to 0.003 GPa and 1.8 MPa, respectively, whereas strain at failure increases to 29.6%. Moreover, glycerol treatment makes the surface of mycelium films hydrophilic and the hyphal matrix absorbing less water. Results show that mycelium films treated with 8% and 16–32% glycerol classify as polymer- and elastomer-like materials, respectively, while non-treated films and films treated with 1–4% glycerol classify as natural material. Thus, mycelium materials can cover a diversity of material families.

AB - Fungal mycelium is an emerging bio-based material. Here, mycelium films are produced from liquid shaken cultures that have a Young’s modulus of 0.47 GPa, an ultimate tensile strength of 5.0 MPa and a strain at failure of 1.5%. Treating the mycelial films with 0–32% glycerol impacts the material properties. The largest effect is observed after treatment with 32% glycerol decreasing the Young’s modulus and the ultimate tensile strength to 0.003 GPa and 1.8 MPa, respectively, whereas strain at failure increases to 29.6%. Moreover, glycerol treatment makes the surface of mycelium films hydrophilic and the hyphal matrix absorbing less water. Results show that mycelium films treated with 8% and 16–32% glycerol classify as polymer- and elastomer-like materials, respectively, while non-treated films and films treated with 1–4% glycerol classify as natural material. Thus, mycelium materials can cover a diversity of material families.

UR - https://www.mendeley.com/catalogue/d7caaf81-38a0-33c8-8805-f993405aa62e/

U2 - 10.1038/s42003-020-1064-4

DO - 10.1038/s42003-020-1064-4

M3 - Article

C2 - 32591629

SN - 2399-3642

VL - 3

JO - Communications Biology

JF - Communications Biology

IS - 1

ER -