The methylene chloride forms a complex with the unreacted polyphenylene ether and with {HEAD ~ the polyphenylene ether portion} of {TAIL ~ the copolymer} 
of
The methylene chloride forms a complex with the unreacted polyphenylene ether and with { HEAD ~ the polyphenylene ether portion } of { TAIL ~ the copolymer }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL