Table 1.

Box–Behnken response surface optimization experiment factor level table.

Level	A CS Concentration mg/mL	B pH of CS Solution	C TPP Concentration mg/mL	D Speed r/min
−1	0.50	4.50	0.20	300
0	1.25	5.25	0.85	500
1	2.00	6.00	1.50	700