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. 2022 Jun 20;14(12):2506. doi: 10.3390/polym14122506

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© 2022 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/).

PMC Copyright notice

Morphology of composites with different size-fractionated BC (the arrows point to BC particles) [104]. Reproduced with permission from the American Chemical Society. 2016, American Chemical Society.