AAAR 37th Annual Conference October 14 - October 18, 2019 Oregon Convention Center Portland, Oregon, USA
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Ultrafine Particle Emission Interactions with Multiple Fused-Deposition Modeling (FDM) 3D Printing in Chamber Environments
Nahin Ferdousi, JOSEPH WOO, Lafayette College
Abstract Number: 514 Working Group: The Air We Breathe: Indoor Aerosol Sources and Chemistry
Abstract Fused-deposition modeling (FDM) 3D printing has become extremely popular for industrial rapid prototyping, as well as for recreational and educational use. Users are commonly able to access 3D printers in shared spaces (e.g. libraries, maker spaces, and research labs) where multiple printers are placed in one centralized location. While the aerosol emissions of individual printers have been previously explored, not much is currently known about emission profiles when multiple printers and filaments are being used simultaneously in close proximity. As the formation and growth of aerosols from FDM printing is expected to depend on the gas-phase concentration of semi-volatile organic compounds emitted near print nozzle surfaces, it is expected that these concentrations will be affected by the emissions of other printers around them. Time- and size-resolved aerosol concentration profiles of two FDM printers in a controlled atmosphere chamber are presented, using varying material type (PLA, ABS, PVA), print geometry, and nozzle temperature. Aerosol emission and concentration profiles suggest that while overall emitted mass is comparable, aerosol size distributions and concentrations are different during simultaneous usage compared to the summative values of each printer used individually.