Anisotropic wood-hydrogel composites: extending mechanical properties of wood 
towards soft materials’ applications

Koch, Sophie Marie; Goldhahn, Christian; Müller, Florence J.; Yan, Wenqing; Pilz-Allen, Christine; Bidan, Cécile M.; Ciabattoni, Beatrice; Stricker, Laura; Fratzl, Peter; Keplinger, Tobias; Burgert, Ingo

doi:10.1016/j.mtbio.2023.100772

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Anisotropic wood-hydrogel composites: extending mechanical properties of wood towards soft materials’ applications

MPS-Authors

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Pilz-Allen, Christine
Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

/persons/resource/persons121147

Bidan, Cécile M.
Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

/persons/resource/persons121298

Fratzl, Peter
Peter Fratzl, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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引用

Koch, S. M., Goldhahn, C., Müller, F. J., Yan, W., Pilz-Allen, C., Bidan, C. M., Ciabattoni, B., Stricker, L., Fratzl, P., Keplinger, T., & Burgert, I. (2023). Anisotropic wood-hydrogel composites: extending mechanical properties of wood towards soft materials’ applications. Materials Today Bio, 22:. doi:10.1016/j.mtbio.2023.100772.

引用: https://hdl.handle.net/21.11116/0000-000D-AD8D-2

要旨

Delignified wood (DW) offers a versatile platform for the manufacturing of composites, with material properties ranging from stiff to soft and flexible by preserving the preferential fiber directionality of natural wood through a structure-retaining production process. This study presents a facile method for fabricating anisotropic and mechanically tunable DW-hydrogel composites. These composites were produced by infiltrating delignified spruce wood with an aqueous gelatin solution followed by chemical crosslinking. The mechanical properties could be modulated across a broad strength and stiffness range (1.2–18.3 MPa and 170–1455 MPa, respectively) by varying the crosslinking time. The diffusion-led crosslinking further allowed to manufacture mechanically graded structures. The resulting uniaxial, tubular structure of the anisotropic DW-hydrogel composite enabled the alignment of murine fibroblasts in vitro, which could be utilized in future studies on potential applications in tissue engineering.