Figure 3From: Preparation of silica nanospheres and porous polymer membranes with controlled morphologies via nanophase separationSEM images of low molecular weight PMMA mixed with silica sol. Mixing ratio of (a) 3:1, (b) 4:1, and (c) 5:1 of PMMA/silica sol, and (d, e, f) the corresponding silica beads of (a, b, c), after removing PMMA, respectively.Back to article page