Optimization of Zirconia-Nanocellulose Inks for Direct Ink Writing of Bone Tissue Engineering Scaffolds

This research project aims to develop and optimize zirconia-cellulose inks for additive manufacturing of scaffolds for bone tissue engineering applications. However, a key challenge in fabricating zirconia scaffolds via Direct Ink Writing (DIW) is the achievement of an ideal rheological properties for precise, high-fidelity printing. Thus, this study proposes the use of nanocellulose, a sustainable and bio-inspired additive, to serve as a rheological modifier that imparts the necessary shear-thinning and thixotropic behavior to the ceramic ink. The main objectives involve the characterization of raw materials, preparation of inks with varying nanocellulose concentrations, comprehensive rheological analysis to determine printability, and subsequent simulation, printing, and thermo-mechanical characterization of the sintered scaffolds. By systematically correlating nanocellulose concentration with the ink’s flow behavior and the final properties of the printed part, this work seeks to advance the fabrication of sustainable, high-performance bioceramic scaffolds for load-bearing applications, such as orthopedic and dental implants.

Faculty Supervisor:

Flavia Braghiroli

Student:

Partner:

Universidade Federal Fluminense

Discipline:

Engineering

Sector:

Education

University:

Université du Québec en Abitibi-Témiscamingue

Program: