. 2023 Aug 14;15(16):3408. doi: 10.3390/polym15163408
© 2023 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/).
Figure 5.
1H-NMR spectra of CPI resins based on FDA.