slowly dropping a monomer into {HEAD ~ the water} and dissolving the same to introduce the monomer into {TAIL ~ the micells} 
slowly dropping a monomer into { HEAD ~ the water } and dissolving the same to introduce the monomer into { TAIL ~ the micells }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL