以偏光顯微鏡量測聚左旋乳酸/聚（з-羥基丁酸酯-co-з-羥基戊酸酯）摻合體之等溫結晶速率

This work was focused on isothermal crystallization rate measurements of poly(L-lactic acid)/poly(3-hydroxybutyrate-co-3- hydroxyvalerate) (PLLA/PHBV) blends with different weight ratios using a hot stage polarizing microscope. The spherulitic growth rate was measured directly using a hot stage polarizing microscope. After that, the Avrami equation was used to calculate Avrami rate constant. The overall crystallization rate was calculated using the intensity of the polarized transmitted light. The results of the isothermal spherulitic growth rates and Avrami rate constants of the blends have a consistent of the trend, but different from the isothermal overall crystallization rates. The intensity of the polarized transmitted light can even use to calculate the overall crystallization rate of small spherulites, where the spherulitic growth rate of small spherulite cannot be measured directly.