{HEAD ~ An α fluoroacrylic acid polymer} and a pervaporation membrane made of {TAIL ~ the polymer}, the polymer comprising: 
made of
{ HEAD ~ An α fluoroacrylic acid polymer } and a pervaporation membrane made of { TAIL ~ the polymer } , the polymer comprising :
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH