A fibrous cellulose paste formulation to manufacture structural parts using 3D printing by extrusion

Abstract : An optimized paste based on short natural cellulose fibers combined with carboxymethyl cellulose at a high dry content (42 wt.%) was implemented as a bio-based material for 3D printing by extrusion. The homogeneous paste exhibited a pronounced thinning behavior and yield stress; it was extruded using a screw extrusion-based direct ink writing system and could easily flow through a small nozzle. The optimized formulation enabled accurate additive manufacturing of parts using a natural air-drying process with or without an ethanol bath. We characterized the anisotropic shrinkage that occurred during the drying of 3D printed parts and proposed a compensation method to account for it. The obtained results emphasized that cellulose had a strong potential to be used as a raw material for 3D printing of cheap, lightweight, robust, and recyclable parts.
Complete list of metadatas

http://hal.univ-grenoble-alpes.fr/hal-02021646
Contributor : Sabine Rolland Du Roscoat <>
Submitted on : Saturday, February 16, 2019 - 2:51:16 PM
Last modification on : Friday, October 18, 2019 - 10:12:02 AM

Identifiers

Collections

CNRS | LGP2 | 3S-R | UGA

Citation

C. Thibaut, A. Denneulin, S. Rolland Du Roscoat, D. Beneventi, L. Orgeas, et al.. A fibrous cellulose paste formulation to manufacture structural parts using 3D printing by extrusion. Carbohydrate Polymers, Elsevier, 2019, 212, pp.119-128. ⟨10.1016/j.carbpol.2019.01.076⟩. ⟨hal-02021646⟩

Share

Metrics

Record views

93