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Characterization and Control of Nanoparticle Emission during 3D Printing

This study aimed to evaluate particle emission characteristics and to evaluate several control methods used to reduce particle emissions during three-dimensional (3D) printing. Experiments for particle characterization were conducted to measure particle number concentrations, emission rates, morphology, and chemical compositions under manufacturer-recommended and consistent-temperature conditions with seven different thermoplastic materials in an exposure chamber. Eight different combinations of the different control methods were tested, including an enclosure, an extruder suction fan, an enclosure ventilation fan, and several types of filter media. We classified the thermoplastic materials as high emitter (>1011 #/min), medium emitters (109 #/min −1011 #/min), and low emitters (<109 #/min) based on nanoparticle emissions. The nanoparticle emission rate was at least 1 order of magnitude higher for all seven filaments at the higher consistent extruder temperature than at the lower manufacturer-recommended ...

Authors:   Ohhun Kwon; Chungsik Yoon; Seunghon Ham; Jihoon Park; Jinho Lee; Danbi Yoo; Yoojin Kim
Journal:   Environmental Science & Technology
Year:   2017
DOI:   10.1021/acs.est.7b01454
Publication date:   30-Aug-2017
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