These results strongly suggest a successful interpenetration of
GMA in the pores of CMPS. After the Friedel–Crafts reaction, the
strong CACl stretching vibration at 1261 cm1 is greatly weakened
[47], and the stoichiometric chlorine content decreases from 17.3%
(CMPS) to 5.8% (CMPS_pc/PGMA IPNs)