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