Tunable Elasto-Viscoplastic Properties of Polymer Blends for 3D Printing Applications.

ABSTRACT: Post-extrusion flow dynamics of soft matter are governed by their elasto-viscoplastic (EVP) rheological properties, which influence filament stability, die swelling, and shape fidelity in extrusion-based 3D printing. Achieving precision and control in printed structures requires optimizing yield stress, viscoelasticity, and extrusion pressure to minimize excessive die swelling and material spreading, which can lead to unstable extrusion and poor print fidelity. We investigate Carbopol-polyethylene oxide (PEO) blends as model EVP fluids, systematically varying their composition to assess die swelling, print width, and deposition accuracy. Rheo-SAXS measurements reveal that die swelling can be directly related to characteristic nanoscale lengthscales. Parametric analysis using the Ohnesorge

SUBMITTER: Mishra AA 

PROVIDER: S-EPMC12687721 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature