Studies on Acrylic Synthetic Fibers

XXVI. A Discussion on the Redox-Polymerization

Abstract

It is well known that, the addition of reducing agent which can be oxidized by persulphate results in a very much enhanced rate of polymerization (A), (A) S₂O₃^--+S₂O₃→SO₄^-+SO₄^-·+S₂O₃^-·
We found that, the reduction and oxidation reaction obtained by salts of oxy-acids of salphur with reducing properties (Na₂SO₃, NaHSO₃, Na₂S₂0₃, Na₂S₂0₄ and SO₂) and ferric salts (or cupuric salts), is responsible for the initiation act (B), (C).(B) S₂O₃^--+Fe⁺⁺⁺→S₂O₃-·Fe⁺⁺ (C) HSO₃^--+Fe⁺⁺⁺→HSO₃+Fe⁺⁺ and the effect of temperature, monomer concentration and catalyser concentration were studied.