Effects of Aspect Ratio of Carbon Nanotubes on Crystallization Behavior of Polylactide Composites

摘要

Biodegradable polylactide (PLA) composites/pristine multiwalled carbon nanotubes (P-CNT) composites with three different aspect ratios (length to diameter) are prepared by coagulation method. Isothermal crystallization and morphology of neat PLA and its composites are further investigated to clarify the effects of aspect ratio of CNT on the crystallization behaviors of PLA in its composites. Results show that the different aspect ratio CNT exhibit substantially different effects on PLA crystallization. It is interesting to find that small aspect ratio CNT (CNT-S) greatly promotes nucleation rate than big aspect ratio CNT (CNT-L).