Capturing PM2.5 Emissions from 3D Printing via Nanofiber-based Air Filter.

Sci Rep

The State Key Laboratory of Fluid Power and Mechatronic Systems, College of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China.

Published: September 2017

AI Article Synopsis

  • - This study explored the use of polycaprolactone (PCL) nanofiber air filters to capture harmful PM2.5 particles produced during FDM 3D printing.
  • - It identified that PCL nanofiber membranes effectively capture these particles and that relative humidity significantly influences how the particles aggregate.
  • - The research outlined four stages of particle generation and aggregation during 3D printing, highlighting a need for better control measures to reduce emissions for broader adoption of this technology.

Article Abstract

This study investigated the feasibility of using polycaprolactone (PCL) nanofiber-based air filters to capture PM2.5 particles emitted from fused deposition modeling (FDM) 3D printing. Generation and aggregation of emitted particles were investigated under different testing environments. The results show that: (1) the PCL nanofiber membranes are capable of capturing particle emissions from 3D printing, (2) relative humidity plays a signification role in aggregation of the captured particles, (3) generation and aggregation of particles from 3D printing can be divided into four stages: the PM2.5 concentration and particles size increase slowly (first stage), small particles are continuously generated and their concentration increases rapidly (second stage), small particles aggregate into more large particles and the growth of concentration slows down (third stage), the PM2.5 concentration and particle aggregation sizes increase rapidly (fourth stage), and (4) the ultrafine particles denoted as "building unit" act as the fundamentals of the aggregated particles. This work has tremendous implications in providing measures for controlling the particle emissions from 3D printing, which would facilitate the extensive application of 3D printing. In addition, this study provides a potential application scenario for nanofiber-based air filters other than laboratory theoretical investigation.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5583319PMC
http://dx.doi.org/10.1038/s41598-017-10995-7DOI Listing

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