Figure 11.

Example of results from rheology experiments. (a) Depiction of a frequency sweep test showing the frequency dependency of the storage modulus G’ for various CNT filler grades. A frequency independence at low frequencies is related to the formation of internal networks [79]. (b) Rotational test evaluating the shear thinning behavior with increasing sonication time. A higher viscosity and more pronounced shear thinning behavior is referred to as MWCNT separation. Reprinted with permission from [83], Copyright (2007) The Society of Rheology.