The larger cells, observed when only 0.5 wt.% of mAC was used, were probably the result of less bubble nucleating sites, leaving the bubbles to expand freely to about 2–4 times that of cells created by mAC at 3.0 wt.%. Fine
cells were abundant when mAC was applied at 1.5–3.0 wt.%. With identical mAC content, the fine mAC particles of 5 lm yielded slightly smaller cells than the larger mAC.