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3D Bioplotter Research Papers
Displaying all papers by L-S. Ebers (1 results)
Direct Ink Writing of Fully Bio-Based Liquid Crystalline Lignin/ Hydroxypropyl Cellulose Aqueous Inks: Optimization of Formulations and Printing Parameters
ACS Applied Bio Materials
2020
Volume 3, Issue 10, Pages 6897–6907
Following the recent demonstration of the potential to direct ink write lyotropic blends of organosolv lignin (OSL) and hydroxypropyl cellulose (HPC), this study aims to optimize the formulations and direct ink writing parameters for fully bio-based lignin/HPC inks. A prescreening identifies the theoretical window of printability for different compositions for formulations based on OSL solutions of 45, 47.5, and 50% solid contents and OSL/HPC wt %/wt % ratios of 30/70, 40/60, and 50/50. Measurements of shear–viscosity and recovery behavior evidence the shear-thinning contribution of HPC and the viscosity recovery contribution of lignin. Shape fidelity, morphology, and mechanical properties of printed…