VST of the PLA resin and ramie fiber reinforced PLA composites
without and with PLA-g-MA is shown in Fig. 7. As seen in Fig. 7,
VST of ramie fiber reinforced PLA composites increases significantly
compared with that of neat PLA. The VST of neat PLA was
60.4 C, and for ramie/PLA composites, the VST was 103.5 C.