Synthesis and Characterization of Polyacrylonitrile Copolymers Containing Amine Groups

摘要

Polyacrylonitrile copolymers containing amine groups (Poly(AN-VA-DEMA) copolymers) were synthesized by the aqueous precipitation copolymerization of acrylonitrile (AN), vinyl acetate (VA) and methacrylic acid 2-dimethylaminoethyl ester (DEMA) with a Na_2S_2O_5-NaClO_3 redox initiating system. The influences of monomer concentration, temperature, pH value of the medium, initiator concentration and additive amount of DEMA on the yield and viscosity-average molecular weight (M_η) of the Poly(AN-VA-DEMA) copolymer were systemically investigated. The composition of Poly(AN-VA-DEMA) copolymer were characterized by FTIR and NMR.