3D Bioplotter Research Papers

Displaying all papers by T. Zimmermann (1 results)

Dynamics of Cellulose Nanocrystal Alignment during 3D Printing

ACS Nano 2018 Volume 12, Issue 7, Pages 6926–6937

The alignment of anisotropic particles during ink deposition directly affects the microstructure and properties of materials manufactured by extrusion-based 3D printing. Although particle alignment in diluted suspensions is well described by analytical and numerical models, the dynamics of particle orientation in the highly concentrated inks typically used for printing via direct ink writing (DIW) remains poorly understood. Using cellulose nanocrystals (CNCs) as model building blocks of increasing technological relevance, we study the dynamics of particle alignment under the shear stresses applied to concentrated inks during DIW. With the help of in situ polarization rheology, we find that the time period…