ulfonated poly(dimethyl phenylene oxide)(SPPO) has been prepared through the reaction of PPO with fuming sulfuric acid in the media of chloroform.The effect of the amount of sulfuric acid on sulfonation degree has also been discussed. The structure of SPPO was characterized by using FTIR
1HNMR
13CNMR and other analysis methods. Conductometric titration
Elemental analysis and 1H-NMR were used to determine the sulfonation degree of SPPO