Quantitative evaluation of carbon nanotube dispersion through scanning electron microscopy images

A comprehensive method that quantitatively characterizes the dispersion state of carbon nanotubes (CNT) was proposed to improve the preparation of CNT-filled composites. CNT/polymer composites with different dispersion and distribution states were prepared, and the microstructures of these composites were obtained. Two indices representing the global and local randomness of CNTs were extracted through quantitative image analysis.