Where the degradation controlling agent is dispersed in the matrix material, the agent represents between about 0.1% to about 40% by {HEAD ~ weight} of {TAIL ~ the matrix material} 
of
Where the degradation controlling agent is dispersed in the matrix material , the agent represents between about 0.1 % to about 40 % by { HEAD ~ weight } of { TAIL ~ the matrix material }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL