Abstract
The polymerization kinetics of the RAFT‐mediated radical polymerization inside sub‐µm particles (Dp < 100 nm) is analyzed. The rate retardation by the addition of a RAFT agent in miniemulsion polymerization can be significantly different from that for bulk polymerization. The particle size below which significant rate acceleration occurs can be estimated from a simple equation. It is demonstrated that the reduction of the polymerization rate through the monomer concentration variation effect results from the correlation of concentration variations in monomer and intermediate or, equivalently, monomer and radical. magnified image

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