Tl(III) initiated polymerization of methyl methacrylate in micellar phase

✍ Scribed by Manabendra Patra; Ajay K. Behera; Rajani K. Behera; Bijoy K. Sinha

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 98 KB
• Volume: 92
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.20172

✦ Synopsis

Abstract

The polymerization kinetics of methyl methacrylate (MMA) was studied, using Tl(III)‐cyclohexanone (CH) redox system as initiator, in the presence of emulsifier [i.e., sodium dodecyl sulfate (SDS), cetyltrimethylammonium bromide (CTAB), and thallium triacetate (TX‐100)] over a temperature range of 25–45°C. The effect of various concentrations of MMA, Tl(III), cyclohexanone, H^+^, and varying ionic strengths on the rate of polymerization, rate of Tl(III) consumption (−R~Tl~), and the percentage of monomer conversion were examined in the presence of 0.015__M__ SDS. The kinetic results of polymerization in the absence and presence of 0.015__M__ SDS were compared in terms of overall activation energy (E~a~) for the process. The viscosity‐average molecular weight (M~V~) of the polymers, obtained in the presence of varying concentrations of anionic surfactant (SDS), was also determined. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 2480–2485, 2004