Research Article
Sulfonic Containing Polymer Bead Synthesized through Inverse Suspension Polymerization and Its Characteristics for Esterification Catalyst
Figure 3
Photographs for polymer beads with different posttreatment (a) with vacuum drying after acidification; (b) without vacuum drying after acidification process (scale bar is 200 m). 8 wt%ST66b; [MBA] =15 wt% of SSS; no porogen.