International Journal of Polymer Science

Research Article

Understanding the Reinforcing Mechanisms in Kenaf Fiber/PLA and Kenaf Fiber/PP Composites: A Comparative Study

Table 2

Peak temperatures of the neat PLA, PP and their composites.
  𝑇 1 ( ∘ C) 𝑇 𝑐 𝑐 ( ∘ C) 𝑇 𝑚 1 ( ∘ C) 𝑇 𝑚 2 ( ∘ C) 𝑇 𝑚 ( ∘ C) 𝑇 𝑐 ( ∘ C)
Neat PLA 6 0 . 6 2 ± 0 . 5 9 1 1 3 . 2 1 ± 0 . 7 2 —— 1 4 7 . 8 4 ± 1 . 0 1 —
 20 wt% kenaf/PLA 5 9 . 4 3 ± 0 . 2 1 9 8 . 1 7 ± 0 . 1 2 1 4 0 . 5 4 ± 0 . 2 9 1 4 9 . 9 1 ± 0 . 3 2 ——
 40 wt% kenaf/PLA 5 8 . 2 6 ± 0 . 5 2 9 2 . 5 4 ± 0 . 7 6 1 3 8 . 9 4 ± 0 . 7 9 1 4 8 . 5 4 ± 0 . 6 4 ——
Neat PP     1 6 7 . 8 6 ± 0 . 0 2 1 1 7 . 7 8 ± 0 . 0 2
 20 wt% kenaf/PP     1 6 7 . 6 3 ± 0 . 4 3 1 2 4 . 1 9 ± 0 . 5 3
 40 wt% kenaf/PP     1 6 6 . 8 8 ± 0 . 4 9 1 2 5 . 6 3 ± 0 . 0 2
𝑇 1 : the first peak temperature; 𝑇 𝑐 𝑐 : cold crystallization; 𝑇 𝑚 1 : the first melting point; 𝑇 𝑚 2 : the second melting point; 𝑇 𝑚 : melting temperature and 𝑇 𝑐 : crystallization temperature.