Cationic polymerization is an important branch of polymer chemistry. Traditional cationic must be carried out in anhydrous and low temperature environment, with harsh operating conditions, high costs energy consumption. Visible light induced simple, environmentally friendly, low-cost, so it has become a research hotspot living polymerization. This paper gives overview the recent advances (mainl...

The cationic ring-opening polymerization reaction of tetrahydrofuran at 20 degrees C was catalyzed by H3PW12O40 x 13 H2O as solid acid catalyst. The effect of the proportions of acetic anhydride and catalyst, reaction time and support on the polymerization reaction was investigated. It has been found that the yield and the viscosity of the polymer depend on the proportion of acetic anhydride, t...