In an embodiment, {HEAD ~ the composite material} includes {TAIL ~ a PLLA fiber material} and a matrix material that does not have the same chemical element composition as the fiber material 
In an embodiment , { HEAD ~ the composite material } includes { TAIL ~ a PLLA fiber material } and a matrix material that does not have the same chemical element composition as the fiber material
OTH OTH OTH OTH HEAD 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