The Preparation and Rheological Behavior of Carbon Nanotubes/Polystyrene Nanocomposites

Carbon nanotubes(CNTs) were modified using concentrated acid,and the CNTs/polystyrene nanocomposites were prepared.FTIR and TEM confirmed the dispersion and the morphology of CNTs in water or matrix.The dynamic rheological behaviors of the nanocomposites were investigated on an ARES-RFS rheometer.At low frequencies,comparing to pure matrix PS,the frequency dependences of complex viscosities and storage moduli reduce,indicating that the addition of CNTs in the matrix leads to the transition from liquid-like to solid-like viscoelastic behavior.This non-terminal low frequency behavior can be attributed to a nanotube network,which restrains the long-range motion of polymer chains.