| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
3D Printing of Biomaterials and Devices
|
| Presentation Title |
Three-Dimensional Printing of Low Viscosity Bioinks Utilizing a Gelatin Printing Support Bath |
| Author(s) |
Emily Lazarus, Iris Rivero |
| On-Site Speaker (Planned) |
Emily Lazarus |
| Abstract Scope |
Extrusion-based printing is a common three-dimensional (3D) printing strategy for fabricating biomaterial scaffolds, yet limitations exist when printing low viscosity hydrogels, which are extensively used for tissue engineering applications. Complex geometries cannot be printed with high fidelity due to the high loss modulus of hydrogel bioinks, which results in collapsing of the printed part. To overcome this limitation, this work investigates the fabrication and rheological characterization of a gelatin slurry printing bath that will act as support during printing. Complex structures, which could not be fabricated through extrusion-based printing, were designed using nTopology. 8% alginate scaffolds were printed inside the bath, and their structural properties analyzed. Results showed high fidelity of the printed scaffolds to the 3D designs and suggested that printing with low viscosity inks is possible using a printing bath. This work advances the use of 3D printed in vitro models that more closely resemble their natural counterparts. |