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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/93881 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/93881 http://eprints.org/relation/ismediumThumbnailVersionOf https://pure.iiasa.ac.at/id/document/93881 93888 2 272307 document 93888 small.jpg image/png 67edd7e476a03ed1de7c939d2295f91d MD5 1928 2021-04-12 07:25:57 https://pure.iiasa.ac.at/id/eprint/17163/6/small.jpg 17163 6 6 image/png other Thumbnails conversion from text to thumbnail_small en public

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/93881 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/93881 http://eprints.org/relation/issmallThumbnailVersionOf https://pure.iiasa.ac.at/id/document/93881 archive 353 disk0/00/01/71/63 2021-04-12 07:17:00 2021-08-27 17:34:37 2021-04-12 07:17:00 article show Vora N. 9072 0000-0002-7359-6728 Christensen P.R. Demarteau J. Baral N.R. Keasling J.D. Helms B.A. Scown C.D. pub ASA SYRR Mechanical recycling of polymers downgrades them such that they are unusable after a few cycles. Alternatively, chemical recycling to monomer offers a means to recover the embodied chemical feedstocks for remanufacturing. However, only a limited number of commodity polymers may be chemically recycled, and the processes remain resource intensive. We use systems analysis to quantify the costs and life-cycle carbon footprints of virgin and chemically recycled polydiketoenamines (PDKs), next-generation polymers that depolymerize under ambient conditions in strong acid. The cost of producing virgin PDK resin using unoptimized processes is ~30-fold higher than recycling them, and the cost of recycled PDK resin ($1.5 kg−1) is on par with PET and HDPE, and below that of polyurethanes. Virgin resin production is carbon intensive (86 kg CO2e kg−1), while chemical recycling emits only 2 kg CO2e kg−1. This cost and emissions disparity provides a strong incentive to recover and recycle future polymer waste. 2021-04-09 published American Association for the Advancement of Science 10.1126/sciadv.abf0187 3144 public Science Advances 7 15 eabf0187 TRUE 2375-2548 FALSE no info:eu-repo/semantics/article