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. 2019 Apr 10;9(20):11220–11229. doi: 10.1039/c8ra10229e

Fig. 2. SEM images of the (a) pure PSA nanofibrous membrane and (b) pure PAN nanofibrous membrane. (c) The cross-sectional images of the PSA/PAN/PSA composite nanofibrous membrane. (d) The diameter distribution of the pure PSA fiber. (e) The diameter distribution of the pure PAN fiber.

Fig. 2