We provide further more granular analysis of the data to support
the claims made above. From the preliminary results of the gel
tests in Fig. 3, several different conclusions can be drawn from the
effects of irradiation temperature and absorbed dose. Sensitized
PLA irradiated at 10 kGy demonstrated a distinct trend in which
higher temperatures led to larger gel fractions and higher degrees
of crosslinking. We expect this is a result of increased local chain
mobility at higher temperatures. In the samples irradiated at
50 kGy the same upward trend of cross-link density at higher
temperature could be seen though less pronounced, indicating that
higher absorbed dose is more dominant than the influence of
increased temperature. This balance presents a set of nice handles
for future optimization of such systems