𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Modelling the free-radical polymerization of methyl methacrylate over the complete range of conversion

✍ Scribed by Dietrich Panke

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
498 KB
Volume
4
Category
Article
ISSN
1022-1344

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A model is proposed for the radical‐induced polymerization of methyl methacrylate which combines concepts given in the literature. Consecutive steps for diffusion and reaction are used for both the propagation and the termination process, and the termination at higher degrees of conversion is dominated by reaction diffusion as described by Buback. The diffusional contributions to the processes are semi‐empirically based on the free‐volume theory, following a suggestion made by Marten and Hamielec, and the diffusion of the macroradicals is assumed to depend on the instantaneous molar mass (as representative for their chain length) and on the cumulative molar mass (representing the matrix of the dead polymer). With one fixed and four adjustable parameters, the model successfully not only describes the bulk polymerization but also takes account of the presence of solvent, chain transfer agent and pre‐polymer.

📜 SIMILAR VOLUMES

Effect of chain transfer agent and the r
Effect of chain transfer agent and the reaction medium on the limiting conversion of methyl methacrylate free radical polymerization
✍ E.L. Madruga; J.J. Malfeito 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 291 KB

The kinetics of free radical homopolymerization of methyl methacrylate in the presence of n-dodecyl mercaptan have been studied at 70 in bulk, using a 3 mol/1 solution in benzene. The results indicate that, when the polymerization is carried out in solution, the chain transfer agent does not influen

Determination of the transfer constant o
Determination of the transfer constant of α-thioglycerol in methyl methacrylate free-radical polymerization
✍ Marta Fernández-García; Michel Delgue; Enrique López Madruga 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 408 KB

## Abstract Using the Mayo and the Clay‐Gilbert method, the transfer rate coefficient of α‐thioglycerol (TG) was determined at 50°C for the polymerization of methyl methacrylate (MMA) in a 3 mol · L^−1^ tetrahydrofuran solution using different amounts of 2,2′‐azoisobutyronitrile (AIBN) as initiator