## Abstract The βlivingnessβ of a controlled radical polymerization process such as reversible additionβfragmentation transfer polymerization (RAFT) depends on the rapid deactivation of propagating radicals (the radical addition reaction in RAFT) that suppresses radical termination reactions. Howev
Modeling the Effects of Reactor Backmixing on RAFT Polymerization
β Scribed by Boris Bitsch; Christopher Barner-Kowollik; Shiping Zhu
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 977 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1862-832X
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β¦ Synopsis
Abstract
The effects of reactor backmixing on the outcome of RAFT polymerizations are examined. The kinetic model for the RAFT reaction is based on the first principle of mass balances and the method of moments. Two reactor models were applied for the simulation of backmixing, i.e., a PFTR with loop and multiple CSTRs in series. The models predict the behavior of monomer conversion, molecular weights, their distributions as well as the polydispersities for various chain types at different levels of backmixing. Both models demonstrated that a significant impact of reactor backmixing on RAFT kinetics and polymer molecular weight development exists. magnified image
π SIMILAR VOLUMES
## Abstract Equations for the calculation of the degree of polymerization in 'modified' living polymerizations (living polymerizations in the presence of deliberately added terminating and transfer agents) are developed from a mechanistic/kinetic model. It is shown that a modifier, acting by the me