Quantitative Investigation into the Design and Process Parametric Effects on the Fiber?Entrapped Residual Charge for a Polymer Melt Electrohydrodynamic Printing Process

The printing accuracy of the melt electrowriting (MEW) process is adversely affected by residual charge entrapped within printed fibers. To mitigate this effect, amount (Qr) must first be accurately determined. In study, Qr measured a commercial electrometer at nanocoulomb scale for MEW-enabled scaffolds. Based on enabling measurement, effects various design parameters (including substrate surface conductivity ?, time t, layer number N), and voltage U, translational stage speed v, material temperature Tm), are investigated. An increase ? or decrease N helps to Qr. different can either dependent independent fiber morphologies. Moreover, fiber-morphology effect synergistic (U Tm) antagonistic (e.g., v) parameters. Under same conditions, in interweaving scaffold generally smaller than that non-interweaving design. These results help furnish necessary insights into dissipation melt-based electrohydrodynamic while providing systematic methodology accumulation.