{HEAD ~ This invention} relates to {TAIL ~ a pervaporation membrane} and to an α fluoroacrylic acid polymer of which the membrane is made 
relates to
{ HEAD ~ This invention } relates to { TAIL ~ a pervaporation membrane } and to an α fluoroacrylic acid polymer of which the membrane is made
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH