of 123–142C. From Figure 9, it can be seen that the crystallization rate of neat and blended PLA with 20 wt % PBAT increases with increasing crystallization temperature until 132C, shows a maximum value of 0.282 and 0.31 lm/s for the growth rate at 132C. Above 132C, neat PLA crystallization rate decreases. Crystallization growth rate of blended PLA with 40 wt % PBAT has a maximum value of 0.32 lm/s at 128C as shown in Figure 9. Below 140C, the crystallization growth rates of PLA with 20 and 40 wt % PBAT are all higher than that of neat PLA. On the contrary, above 142C, the crystallization growth rates of PLA in the blends are lower than that of neat PLA. The increase or decrease of the growth rates of PLA in the immiscible blends may be related to the following two facts. First, the addition of low Tg component PBAT decreases the Tg of PLA, resulting in the increase of the chain mobility of PLA molecules. Second, the decrease of the degree of supercooling, i.e., the difference between the equilibrium melting point, T0m, and the crystallization temperature, Tc, may decrease the thermodynamic driving force required for the growth of PLA spherulites. It is strange that blended PLA with 60