Abstract:Graft ploymers on the surface of the anion exchange resin were synthesized via the RAFT polymerization of styrene. First, two trithiocarbonates with carboxyl group were synthesized, and grafted on the surface of the anion exchange resin through the anion exchange reaction. Second, the RAFT polymerization of styrene was carried out in the presence of the modified resin. At last polystyrene was take off from the anion exchange resin through the anion exchange reaction. The resulting polymers were characterized and analyzed by fourier transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance (1H-NMR), gel permeation chromatography (GPC). The proton nuclear magnetic resonance(1H-NMR) showed that two trithiocarbonates with carboxyl group were successfully synthesized. Fourier transform infrared spectroscopy (FTIR) proved that the trithiocarbonates were successfully grafted onto the anion exchange resin. The gel permeation chromatography (GPC) supplied the molecular weight and polydispersity index of polystyrene in the liquid phase in the different polymerization conditions.
Keywords: styrene, RAFT polymerization, graft polymer