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2007•Journal of Henan UniversityRequires access

Polymerization of MMA Initiated by Na_2SO_3/H_2O System

Siyu Li

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Abstract

polymerization of Methyl methacrylate(MMA) initiated by Na2SO3/H2O system is investigated, and the factors that influence polymerization rate (Rp) and molecular weight are also discussed. The results indicate that MMA polymerization can be initiated by Na2SO3/H2O system efficiently, the overall polymerization rate can be expressed as Rp= k[MMA]1.6 [Na2SO3]0.44, the overall activation energy Ea is 81.7 kJ/mol, the molecular weight of polymer is 1.36x105 and the monomer conversion is 86.7 %. The possible polymerization mechanism is proposed.

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polymerization of Methyl methacrylate(MMA) initiated by Na2SO3/H2O system is investigated, and the factors that influence polymerization rate (Rp) and molecular weight are also discussed. The results indicate that MMA polymerization can be initiated by Na2SO3/H2O system efficiently, the overall polymerization rate can be expressed as Rp= k[MMA]1.6 [Na2SO3]0.44, the overall activation energy Ea is 81.7 kJ/mol, the molecular weight of polymer is 1.36x105 and the monomer conversion is 86.7 %. The possible polymerization mechanism is proposed.

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Available abstract

polymerization of Methyl methacrylate(MMA) initiated by Na2SO3/H2O system is investigated, and the factors that influence polymerization rate (Rp) and molecular weight are also discussed. The results indicate that MMA polymerization can be initiated by Na2SO3/H2O system efficiently, the overall polymerization rate can be expressed as Rp= k[MMA]1.6 [Na2SO3]0.44, the overall activation energy Ea is 81.7 kJ/mol, the molecular weight of polymer is 1.36x105 and the monomer conversion is 86.7 %. The possible polymerization mechanism is proposed.

Key concepts: Polymerization, Monomer, Methyl methacrylate, Polymer chemistry, Polymer, Chemistry, Chain-growth polymerization, Solution polymerization

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