Improving Anti-Protein-Fouling Property of Polyacrylonitrile Ultrafiltration Membrane by Grafting Sulfobetaine Zwitterions

Table 1

The date of XPS of PAN-50 membrane.

	C	O	N	S
PAN-50	74.14	10.9	14.69	0
Hydrolyzed PAN-50	75.71	13.96	12.14	0
PAN-50-M1	74.57	11.77	13.12	0.54
PAN-50-M2	75.5	11.47	12.37	0.66
PAN-50-M3	75	10.23	13.8	0.97