Towards sustainable additive manufacturing: The need for awareness of particle and vapor releases during polymer recycling, making filament, and fused filament fabrication 3-D printing

被引：29

作者：

Stefaniak, Aleksandr B. ^{[1
]}

Bowers, Lauren N. ^{[1
]}

Cottrell, Gabe ^{[2
]}

Erdem, Ergin ^{[2
]}

Knepp, Alycia K. ^{[1
]}

Martin, Stephen B., Jr. ^{[1
]}

Pretty, Jack ^{[3
]}

Duling, Matthew G. ^{[1
]}

Arnold, Elizabeth D. ^{[1
]}

Wilson, Zachary ^{[2
]}

Krider, Benjamin ^{[2
]}

Fortner, Alyson R. ^{[1
]}

LeBouf, Ryan F. ^{[1
]}

Virji, M. Abbas ^{[1
]}

Sirinterlikci, Arif ^{[2
]}

机构：

[1] NIOSH, Resp Hlth Div, Morgantown, WV 26505 USA

[2] Robert Morris Univ, Sch Engn Math & Sci, Moon Township, PA 15108 USA

[3] NIOSH, Hlth Effects Lab Div, Cincinnati, OH 45213 USA

来源：

RESOURCES CONSERVATION AND RECYCLING | 2022年 / 176卷

关键词：

3-D printing; Plastics; Circular economy; Schools; Libraries; Health; 3D PRINTER; EMISSIONS; IMPACT; PERSPECTIVE; OZONOLYSIS; EXPOSURES; ENERGY; LOOP;

D O I：

10.1016/j.resconrec.2021.105911

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Fused filament fabrication three-dimensional (FFF 3-D) printing is thought to be environmentally sustainable; however, significant amounts of waste can be generated from this technology. One way to improve its sustainability is via distributed recycling of plastics in homes, schools, and libraries to create feedstock filament for printing. Risks from exposures incurred during recycling and reuse of plastics has not been incorporated into life cycle assessments. This study characterized contaminant releases from virgin (unextruded) and recycled plastics from filament production through FFF 3-D printing. Waste polylactic acid (PLA) and acrylonitrile butadiene styrene (ABS) plastics were recycled to create filament; virgin PLA, ABS, high and low density polyethylenes, high impact polystyrene, and polypropylene pellets were also extruded into filament. The release of particles and chemicals into school classrooms was evaluated using standard industrial hygiene methodologies. All tasks released particles that contained hazardous metals (e.g., manganese) and with size capable of depositing in the gas exchange region of the lung, i.e., granulation of waste PLA and ABS (667 to 714 nm) and filament making (608 to 711 nm) and FFF 3-D printing (616 to 731 nm) with waste and virgin plastics. All tasks released vapors, including respiratory irritants and potential carcinogens (benzene and formaldehyde), mucus membrane irritants (acetone, xylenes, ethylbenzene, and methyl methacrylate), and asthmagens (styrene, multiple carbonyl compounds). These data are useful for incorporating risks of exposure to hazardous contaminants in future life cycle evaluations to demonstrate the sustainability and circular economy potential of FFF 3-D printing in distributed spaces.

引用

页数：11

共 57 条

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