The composite material 27, wherein the polymer blend comprises {HEAD ~ the polymer} having {TAIL ~ a chemical element composition} that is different to that of the fiber in an amount of at least 50% of the polymer blend 
The composite material 27 , wherein the polymer blend comprises { HEAD ~ the polymer } having { TAIL ~ a chemical element composition } that is different to that of the fiber in an amount of at least 50 % of the polymer blend
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH