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- W4385810353 abstract "Abstract Poly(lactic acid) (PLA)/cellulose nanocrystal (CNC) nanocomposites with 1 or 3 phr of CNC were prepared by melt mixing and compression molding then their % crystallinities as well as crystallization and melting behavior during the first heating/cooling/second heating process were investigated by differential scanning calorimetry (DSC). Isothermal crystallization at 80–130°C for 5 min was performed during the cooling process to see how the isothermal crystallization affects % crystallinity at 25°C. The % crystallinity at 25°C as well as the crystallization rate of the nanocomposite increased with CNC content and showed a maximum at the isothermal crystallization temperature of 105°C regardless of CNC content. The bimodal DSC melting peaks observed during the second heating process were considered due to the crystals with many defects (α′) and the crystals with more perfect structure (α), respectively. Isothermal crystallization kinetic analysis by Avrami equation showed that the Avrami exponents of the nanocomposites were about 1, meaning a rod‐ or disc‐shaped crystal growth mechanism. Improving the mechanical properties of the PLA/CNC nanocomposite would be possible because the % crystallinity at 25°C could be effectively increased by changing CNC content and cooling history. Highlights PLA/CNC nanocomposites. Crystallization and melting behavior analysis of the nanocomposites by DSC. Isothermal crystallization at 80–130°C for 5 min during cooling by DSC. Crystallization degree was maximum for the isothermal crystallization at 105°C. Isothermal crystallization kinetic analysis by Avrami equation." @default.
- W4385810353 created "2023-08-15" @default.
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- W4385810353 date "2023-08-14" @default.
- W4385810353 modified "2023-10-11" @default.
- W4385810353 title "A study on the crystallization and melting of <scp>PLA</scp> nanocomposites with cellulose nanocrystals by <scp>DSC</scp>" @default.
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- W4385810353 doi "https://doi.org/10.1002/pc.27658" @default.
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