Optimization of the microgel assembly. Effects of (A) agitation rate (fast, medium, and slow), (B) agitation time, and (C) the addition of surfactant on microgel assembly. Compositions of linear, branched, or random microgel assemblies were compared. Average chain length of linear assemblies with SD was also labeled in B and C. Data are means ± SD, n = 3. *, P < 0.05; **, P < 0.01. N.S., not significant.