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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 22: Gels, Polymer Networks and Elastomers I

CPP 22.1: Hauptvortrag

Mittwoch, 20. März 2024, 09:30–10:00, H 0106

Production of various hybrid bio-based gel ink made of polymer grafted nanocellulose, suitable for 3D printing application — •Julien R.G. Navarro, Xuehe Jiang, Feras Dalloul, Enguerrand Barba, and Benedikt Mietner — Institute of Wood Science, University Hamburg, Germany

The use of biodegradable and renewable material resources, which can replace petroleum-based products, to produce performant functional materials are one of the greatest challenges for a future sustainable society. Within this philosophy, bio-based polymers such as nanocellulose have attracted considerable attention. However, nanocellulose needs further chemical surface modification to be considered as suitable ink material in specific applications or for being proceed through 3D gel-printing. This talk will focus on the opportunity and the advantages of modifying the CNF surface chemically through the selective grafting and cross-linking of numerous polymers on its surface, with and without the presence of inorganic nanoparticles. The grafting of those specific entities onto the CNF surface not only affect the behavior of the CNF in suspension, but allows also to introduce numerous new properties before being processed through 3D-printing. In this talk, several gel-ink examples with various properties (luminescent, self-healing, anti-microbial) will be presented and their ability to be 3D printed will be shown.

Keywords: nanocellulose; 3d printing; gel; cellulose nanofibrils; composite