In the case of matrices composed of polyurethanes, preferred coatings include hydroxyl containing {HEAD ~ polyethylene copolymers} such as {TAIL ~ ethylene vinyl alcohol copolymers} 
such as
In the case of matrices composed of polyurethanes , preferred coatings include hydroxyl containing { HEAD ~ polyethylene copolymers } such as { TAIL ~ ethylene vinyl alcohol copolymers }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL