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. 2022 Apr 5;14(7):1477. doi: 10.3390/polym14071477

Figure 7.

Figure 7

SEM images of CNF before (a) and after modification with acetic (b), propionic (c), and butyric (d) anhydrides (reaction time was 4 h). Reproduced from Supplementary Materials of [152], published under the terms of the Creative Commons CC BY license.

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