
430 Engineering of Polymers and Chemical Complexity
All samples were subsequently wet-sieved in ethanol to break-up the agglomer-
ates. For NNG and NSG, the size fractions between 25 and 45 µm were retained,
whilst for RFL and PRFL the size fractions between 200 and 250 µm were retained.
appear to be composites with rounded edges, as can be seen in Figure 6.
FIGURE 6 Close-up of sieved NNG (3k x magnification)
In an effort to reduce the composites to single particles, the sample was sonicated
in ethanol for 5 minutes. This had an adverse effect on some of the particles ...