Hydrophilic functionality, for example, {TAIL ~ ionic groups} may be selectively introduced onto {HEAD ~ the side chain} post polymerization 
Hydrophilic functionality , for example , { TAIL ~ ionic groups } may be selectively introduced onto { HEAD ~ the side chain } post polymerization
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH