Our researchers studied the role of sulphur in controlling CNT morphology and aggregation by synthesising CNTs under a wide range of S/C ratios (0.001 to 5 wt.%) and determining their diameter and length distributions, number concentration and form of aggregation. The CNTs produced range from polymer-like, which readily bundle and form aerogels, to rod-like that do not.

From that study they have created useful aerogelation “phase diagrams” for different CNT concentrations, aspect ratios and CNT bending stiffness.

Read the whole article here.