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Biodegradation of bio-sourced and synthetic organic electronic materials towards green organic electronics

Eduardo Di Mauro, Denis Rho, Clara Santato

Article (2021)

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Abstract

Ubiquitous use of electronic devices has led to an unprecedented increase in related waste as well as the worldwide depletion of reserves of key chemical elements required in their manufacturing. The use of biodegradable and abundant organic (carbon-based) electronic materials can contribute to alleviate the environmental impact of the electronic industry. The pigment eumelanin is a bio-sourced candidate for environmentally benign (green) organic electronics. The biodegradation of eumelanin extracted from cuttlefish ink is studied both at 25 °C (mesophilic conditions) and 58 °C (thermophilic conditions) following ASTM D5338 and comparatively evaluated with the biodegradation of two synthetic organic electronic materials, namely copper (II) phthalocyanine (Cu–Pc) and polyphenylene sulfide (PPS). Eumelanin biodegradation reaches 4.1% (25 °C) in 97 days and 37% (58 °C) in 98 days, and residual material is found to be without phytotoxic effects. The two synthetic materials, Cu–Pc and PPS, do not biodegrade; Cu–Pc brings about the inhibition of microbial respiration in the compost. PPS appears to be potentially phytotoxic. Finally, some considerations regarding the biodegradation test as well as the disambiguation of “biodegradability” and “bioresorbability” are highlighted.

Uncontrolled Keywords

Electronic devices, Environmental impact

Subjects: 3100 Physics > 3100 Physics
Department: Department of Engineering Physics
PolyPublie URL: https://publications.polymtl.ca/9285/
Journal Title: Nature Communications (vol. 12)
Publisher: Springer Nature
DOI: 10.1038/s41467-021-23227-4
Official URL: https://doi.org/10.1038/s41467-021-23227-4
Date Deposited: 16 May 2022 16:43
Last Modified: 07 Dec 2022 13:42
Cite in APA 7: Di Mauro, E., Rho, D., & Santato, C. (2021). Biodegradation of bio-sourced and synthetic organic electronic materials towards green organic electronics. Nature Communications, 12, 10 pages. https://doi.org/10.1038/s41467-021-23227-4

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