. 2018 Nov 29;10(12):1323. doi: 10.3390/polym10121323
© 2018 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 (http://creativecommons.org/licenses/by/4.0/).
Figure 1.
SEM images of (a) PAA, (b) BC, and (c) BC-PAA.