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

Table 4

Effect of different porogen on polymer beads.

	Porogen	S% (wt%) by elemental analysis	Ion exchange capacity; (mmol/g)
P1	propanediol	7.48	1.53
P2	n-butanol	10.15	2.82
P3	1,4-butanediol	8.28	1.85
P4	PEG200	8.43	2.55
P5	PEG400	8.70	1.95
P6	PEG600	7.44	1.65

8 wt% ST66b; MBA:20 wt% of SSS.