Abstract
A complex of polyvinylamine (PVAm) and Cu(II) was synthesized and IR, TG and XPS were employed to examine its structure. It has been found that PVAm-Cu(II) complex/sodium sulfite (Na 2SO 3) system can be used as initiator of methyl methacrylate (MMA) polymerization. The overall polymerization rate can be expressed as R p = k[MMA] 1.4[Na 2SO 3] 0.5[PVAm-Cu(II)] 0. The activity of initiator system varies with the composition of PVAm-Cu(II) complex. The polymerization proceeds by a free radical way, and primary radicals are formed by the process of “complexation-hydrogen transfer” between PVAm-Cu(II)/Na 2SO 3/MMA system. The copolymerization of MMA and styrene (St) with PVAm-Cu(II)/Na 2SO 3 system as initiator differs from the conventional radical copolymerization.
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