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. 2021 Apr 9;11(4):957. doi: 10.3390/nano11040957

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Morphologies of nanoscale urushiol/PAN films immersed in (a₁) 60%, (a₂) 80%, and (a₃) 100% sulfuric acid solutions for 30 min: (a) Without urushiol (5% PAN), (b) 3:5, (c) 4:5, (d) 5:5, (e) 6:5, (f) 7:5.

Morphologies of nanoscale urushiol/PAN films immersed in (a₁) 60%, (a₂) 80%, and (a₃) 100% sulfuric acid solutions for 30 min: (a) Without urushiol (5% PAN), (b) 3:5, (c) 4:5, (d) 5:5, (e) 6:5, (f) 7:5.