Effect of Fe(III) on the polymerization of butyl methacrylate initiated by a charge-transfer mechanism

✍ Scribed by Shashi D. Baruah

• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 455 KB
• Volume: 48
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1993.070480206

✦ Synopsis

Abstract

The effect of the Lewis acid, iron(III) tris(oxalato)ferrate(III) tetrahydrate (Fe‐[Fe(C~2~O~4~)~3~].4H~2~O) (A) on the polymerization of butyl methacrylate (BuMA) initiated by a charge‐transfer mechanism has been studied in dimethyl sulfoxide (DMSO) at 60°C. 2,4‐dinitrophenylhydrazine (DNPH) was used as a nitrogen donor compound to initiate the polymerization in the presence of carbon tetrabromide (CBr~4~). Induction periods are observed for the polymerization initiated by DNPH and CBr~4~. The rate constant at 60°C for the polymerization of BuMA in the presence of A is 1.70×10^5^L/mols^−1^. The molecular weight of polymers decreases with the increase of [ A ]. A probable reaction mechanism is proposed to explain the observed results. © 1993 John Wiley & Sons, Inc.