Research Article

Controlling Foam Morphology of Poly(methyl methacrylate) via Surface Chemistry and Concentration of Silica Nanoparticles and Supercritical Carbon Dioxide Process Parameters

Figure 6

(a) Cell density and (b) average cell size of the neat PMMA, nanocomposites containing bare nanosilica (B), nanocomposites with surface treated silica at low fluorination (F) and high fluorination (FF). Error bars represent standard error of five samples and error bars smaller than symbol size are not shown.
864926.fig.006a
(a)
864926.fig.006b
(b)