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. 2019 Dec 10;14:9745–9761. doi: 10.2147/IJN.S230693

Figure 2.

Figure 2

Synthesis and characteristics of CASF. (A) Schematic diagram of CASF synthesis. (B) Zeta potential of CASF at PEI/ASF weight ratios of 0%, 0.1%, 0.5%, 1%, 2%, 4%, 6% and 8%. (C) 1H-NMR spectra of PEI, ASF and CASF in D2O.

Abbreviations: CASF, cationic Antheraea pernyi silk fibroin; PEI, polyethylenimine; ASF, Antheraea pernyi silk fibroin; NMR, nuclear magnetic resonance.