Tunable single-walled carbon nanotube microstructure in the liquid and solid states using poly(acrylic acid).
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Poly(acrylic acid) is shown to control the level of SWNT dispersion in aqueous mixtures and the state of dispersion in a solid composite. At low pH, PAA-stabilized suspensions containing 0.1 wt % SWNT have a waterlike viscosity, but this mixture thickens as the pH is raised. This behavior is reversed when pH is again lowered. Changing pH varies the SWNT microstructure between aggregated and well-exfoliated states, as evidenced by electron microscopy and electrical conductivity measurements.
author list (cited authors)
Grunlan, J. C., Liu, L., & Kim, Y. S.
complete list of authors
Grunlan, Jaime C||Liu, Lei||Kim, Yeon Seok