Fabrication and Design of Wood-Based High-Performance Composites

Marion Frey, Meri Zirkelbach, Clemens Dransfeld, Eric Faude, Etienne Trachsel, Mikael Hannus, Ingo Burgert, Tobias Keplinger

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)
72 Downloads (Pure)


Delignified densified wood is a new promising and sustainable material that possesses the potential to replace synthetic materials, such as glass fiber reinforced composites, due to its excellent mechanical properties. Delignified wood, however, is rather fragile in a wet state, which makes handling and shaping challenging. Here we present two fabrication processes, closed-mold densification and vacuum densification, to produce high-performance cellulose composites based on delignified wood, including an assessment of their advantages and limitations. Further, we suggest strategies for how the composites can be re-used or decomposed at the end-of-life cycle. Closed-mold densification has the advantage that no elaborate lab equipment is needed. Simple screw clamps or a press can be used for densification. We recommend this method for small parts with simple geometries and large radii of curvature. Vacuum densification in an open-mold process is suitable for larger objects and complex geometries, including small radii of curvature. Compared to the closed-mold process, the open-mold vacuum approach only needs the manufacture of a single mold cavity.

Original languageEnglish
Article numbere60327
Number of pages8
JournalJournal of visualized experiments : JoVE
Issue number153
Publication statusPublished - 2019


  • Bio-based
  • Cellulose scaffold
  • Delignified densified wood
  • Design
  • Engineering
  • Issue 153
  • Natural fiber composite
  • Recyclable
  • Vacuum forming
  • Wet shaping


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