Element percentage (%) C N O Br
1-Vinylimidazole 66.67 33.33 0 0
1,2-Dibromoethane 13.06 0 0 86.94
N,N’-Methylenebisacrylamide 58.33 19.44 22.23 0
PILs-XSS 45.26 16.67 31.72 6.35