Radiology for Trigeminal Neuralgia

Evaluation of shellac‐polyethylene glycol as an alternative material for fabrication of fused filament fabrication 3D printing filament at low extrusion temperature

“…The insoluble residue on the filter paper was used to measure the percentage of insoluble solid, as further described in 2.3.4. The acid value, expressed as mg of KOH required to neutralize free carboxylic groups per 1 g of shellac sample, was calculated using Equation (2).…”

“…1 Among the many types of 3D printing techniques, fused filament fabrication (FFF) or fused deposition modeling (FDM) is one of the widely used techniques in pharmaceutical applications to generate 3D dosage forms because of its cost-effectiveness, affordability, lack of a requirement for solvents, ease of use, and precisely controlled size and complex geometries of printlet with remarkable reproducibility. [2][3][4][5] In the FFF process, a thermoplastic polymer filament is melt, extruded through a high temperature nozzle and then hardened layer by layer onto a platform until printing was completed. 6 FFF requires filament with good mechanical properties and thermoplastic characteristics.…”