Table 2.

Scanning electron microscope (SEM) morphologies and average diameters of the PUSX nanofibers under the optimized electrospinning parameters (magnification: 2000×) [10].

Sample	PU	Si01	Si02	Si03
SEM
Average Diameter (nm)	720	636	690	548
Sample	Si04	Si01-20	Si01-40	Si01-59
SEM
Average Diameter (nm)	440	531	402	471
Sample	Si05	Si06	Si07	Si08
SEM
Average Diameter (nm)	564	544	456	456