{TAIL ~ A composition} 1, wherein component B has {HEAD ~ a pore volume} greater than 2 cm3 /g 
{ TAIL ~ A composition } 1 , wherein component B has { HEAD ~ a pore volume } greater than 2 cm3 /g
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH