Date of Award
Damon A. Smith
Paul J. Schilling
Paul D. Herrington
This thesis explores the incorporation of silver microparticle and submicron wire additives into thermoplastic filament feedstock for fused filament fabrication (FFF) to create multifunctional three-dimensional (3D) printable composites. The impact of silver microparticle and submicron wire additives on mechanical behavior along with antibacterial effect of the silver microparticle and submicron wire additives on printed objects were assessed.
Composite FFF filaments were fabricated by solution processing, granulation, and extrusion. Differential Scanning Calorimetry (DSC) was conducted to measure the glass transition and melting point temperatures of the composite filaments for 3D printing. The effect of the additive addition on the thermal properties and tensile mechanical performance was measured. Scanning Electron Microscopy (SEM) was used to analyze the composite microstructure and fracture behavior. The reduction in the growth of Escherichia coli (E. coli) was measured after exposure to FFF-printed composite test specimens with additive concentrations ranging from 0.0 to 10.0 weight percent.
Robichaux, Jenna W., "Silver Microparticle and Submicron Wire - Polylactic Acid Composites for Additive Manufacturing" (2021). University of New Orleans Theses and Dissertations. 2930.