Kinetics of Carbon Nanotube Alignment Under Shear Force via Real-time Polarized Raman Spectroscopy

摘要

Carbon nanotube (CNT) alignment under shear force is studied via in situ, real-time polarized Raman spectroscopy. This technique enables the real-time detection of changes in CNT orientation in a CNT/epoxy suspension. In a sheared fluid, the CNT particles were found to align with the flow direction and they align faster and reach higher degrees of alignment at high shear rates. These results provide guidance for the fabrication of highly aligned CNT/polymer composites.