Table 3.

The orthogonal experimental design and results

Test	Voltage (kV)	Flow speed (mL/h)	Solidification distance (cm)	Average diameter (nm)	Uniformity coefficient
1	80	3	18	270.51±14.68	0.054
2	80	5	20	330.46±20.75	0.063
3	80	7	22	380.03±15.86	0.042
4	90	3	20	336.27±25.23	0.075
5	90	5	22	444.57±18.79	0.042
6	90	7	18	384.49±27.37	0.071
7	100	3	22	427.19±31.68	0.074
8	100	5	18	444.38±23.69	0.053
9	100	7	20	468.02±29.37	0.063
∑K1	981	1,033.97	1,099.38	Sequence of influence factors for fiber diameter A>B>C
∑K2	1,165.33	1,219.41	1,134.75
∑K3	1,339.59	1,232.54	1,251.79
K1	327	344.66	366.46
K2	388.44	406.47	378.25
K3	446.53	410.85	417.26
Variation R	119.73	66.19	50.8
∑K1	0.159	0.203	0.178	Sequence of influence factors for fiber uniformity B>C>A
∑K2	0.188	0.158	0.201
∑K3	0.19	0.176	0.158
K1	0.053	0.068	0.059
K2	0.063	0.053	0.067
K3	0.063	0.059	0.053
Variation R	0.01	0.015	0.014

Note: A, voltage; B, flow speed; C, solidification distance.