Soapless emulsion polymerization of methyl methacrylate. II. Simulation of polymer particle formation

✍ Scribed by Yi-Cheng Chen; Chia-Fen Lee; Wen-Yen Chiu

• Book ID: 102657338
• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 567 KB
• Volume: 61
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19960919)61:12<2235::aid-app25>3.0.co;2-4

✦ Synopsis

In this work, a generalized mathematical model was developed to estimate the variation of particle concentration during the entire course of soapless emulsion polymerization of methyl methacrylate (MMA). All of the factors, such as oligomeric radical absorption or desorption by polymer particles, coagulation between polymer particles, and the termination effect on the formation mechanism of polymer particles, were considered and included in this model. When appropriate parameters were selected, this model could be successfully used to interpret the experimental behavior of particle concentration during the entire reaction. Under different conditions, the rate of polymerization, the number of radicals in each particle, the instantaneous average molecular weight of polymers, and the rate constant of termination were also calculated. All of them coincided with the experimental results quite well.