Synthesis, Characterization and Material Application of Novel Polyimide

Abstract

Novel polyimide-II containing 8-hydroxyquinoline as pendent groups was prepared by reacting N,N′-(1,1′-biphenyl)-4,4′-diyl bismaleimide--diamine polyimide-I (BPBMDDM) with 5-chloromethyl-8-hydroxyquinoline hydrochloride (CMHQ) in the presence of base catalyst. N,N′-(1,1′-biphenyl)-4,4′-diyl bismaleimide--diamine polyimide-I (BPBMDDM) was prepared by Michael addition reaction of N,N′-(1,1′-biphenyl)-4,4′-diyl bismaleimide (BPBM) with 4,4′-diaminodiphenyl methane (DDM). The resulting polyimide-II (BPBMDDMCMHQ) was characterized by spectral techniques. Polymeric metal chelates of polyimide-II were prepared using the transition metal ions Zn(II), Cu(II), Ni(II), Co(II), and Mn(II), and were characterized. Ion-exchange properties of polyimide-II (BPBMDDMCMHQ) for Fe(III), Zn(II), Ni(II) and Cu(II) metal ions were also studied by batch-equilibration method. The polyimide-II (BPBMDDMCMHQ) has good metal uptake capacity at varying pH range and can be recycled. It has thermal stability up to 240°C.