Sulfonic Containing Polymer Bead Synthesized through Inverse Suspension Polymerization and Its Characteristics for Esterification Catalyst

Figure 9

SEM micrographs of P-2 with magnification in 200 (a), 5000 (b), and P-5 with magnification in 250 (c). 8 wt% ST66b; MBA: 20 wt% of SSS.

(a)

(b)

(c)