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