From: "Secretary, ACS Division of Chemical Health and Safety" <secretary**At_Symbol_Here**DCHAS.ORG>
Subject: [DCHAS-L] Buyer Beware Of 3-D Printer Emissions
Date: Mon, 25 Jan 2016 07:42:18 -0500
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: 4071432B-B1D9-4E6C-AB67-D062A3378667**At_Symbol_Here**dchas.org


https://urldefense.proofpoint.com/v2/url?u=http-3A__cen.acs.org_articles_94_i4_Buyer-2DBeware-2D3-2DD-2DPrinter.html&d=BQIFaQ&c=lb62iw4YL4RFalcE2hQUQealT9-RXrryqt9KZX2qu2s&r=meWM1Buqv4IQ27AlK1OJRjcQl09S1Zta6YXKalY_Io0&m=KQ91cKP3uGx0xzHZbskEnCakcsdSENhI0r9yw6UhA58&s=J_xB6WNBs7E3rnCwVGi2z2aRWeUoMm34OUe6UhVkHEg&e=

Buyer Beware Of 3-D Printer Emissions
Indoor Air Pollution: Particulates and volatile organic compounds could reach harmful levels in office-sized spaces

https://urldefense.proofpoint.com/v2/url?u=http-3A__pubs.acs.org_doi_abs_10.1021_acs.est.5b04983-3Fsource-3Dcen&d=BQIFaQ&c=lb62iw4YL4RFalcE2hQUQealT9-RXrryqt9KZX2qu2s&r=meWM1Buqv4IQ27AlK1OJRjcQl09S1Zta6YXKalY_Io0&m=KQ91cKP3uGx0xzHZbskEnCakcsdSENhI0r9yw6UhA58&s=RN2nSJeDGf4LyH6SvfmXzTYETXZpBYyovf36fzLWopQ&e=

Emissions of Ultrafine Particles and Volatile Organic Compounds from Commercially Available Desktop Three-Dimensional Printers with Multiple Filaments

Previous research has shown that desktop 3D printers can emit large numbers of ultrafine particles (UFPs, particles less than 100 nm) and some hazardous volatile organic compounds (VOCs) during printing, although very few filament and 3D printer combinations have been tested to date. Here we quantify emissions of UFPs and speciated VOCs from five commercially available filament extrusion desktop 3D printers utilizing up to nine different filaments by controlled experiments in a test chamber. Median estimates of time-varying UFP emission rates ranged from ?14108 to ?141011 min"1 across all tested combinations, varying primarily by filament material and, to a lesser extent, bed temperature. The individual VOCs emitted in the largest quantities included caprolactam from nylon-based and imitation wood and brick filaments (ranging from ?142 to ?14180 14g/min), styrene from acrylonitrile butadiene styrene (ABS) and high-impact polystyrene (HIPS) filaments (ranging from ?1410 to !
?14110 14g/min), and lactide from polylactic acid (PLA) filaments (ranging from ?144 to ?145 14g/min). Results from a screening analysis of potential exposure to these products in a typical small office environment suggest caution should be used when operating many of the printer and filament combinations in poorly ventilated spaces or without the aid of combined gas and particle filtration systems.

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