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RAFT Polymerization ‐ Investigation of the Initialization Period and Determination of the Transfer Coefficients
Author(s) -
Drache Marco,
SchmidtNaake Gudrun
Publication year - 2007
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200751345
Subject(s) - raft , polymerization , chain transfer , reversible addition−fragmentation chain transfer polymerization , radical polymerization , styrene , polymer chemistry , initialization , monomer , chemistry , bulk polymerization , transfer agent , materials science , copolymer , organic chemistry , computer science , polymer , programming language
Summary: The rate of activation of the initial RAFT agent is very important with regard to effective control of the polymerization. The initialization period of Benzyl Dithiobenzoate RAFT mediated bulk polymerization of styrene at 120 °C was investigated at different RAFT agent and initiator concentrations. The concentration of the RAFT agent and the monomer concentration in the initial phase of the RAFT polymerization were determined experimentally by Size Exclusion Chromatography (SEC). We characterized the RAFT initialization following the concept of Rizzardo et al.1,2 by determination of the transfer coefficients. For the determination of the transfer coefficients from the experimental data a Monte Carlo simulation was developed by us.