| 초록 |
Novel methods were developed to measure the activation and the deactivation rate constants in Atom Transfer Radical Polymerization (ATRP) using model compounds. The activation rate constants were measured using HPLC or GC under the kinetic isolation condition achieved by trapping the generated radical with 2,2,6,6-tetramethylpiperidinyl-1-oxy (TEMPO). The deactivation rate constants were determined by trapping 1-phenylethyl radicals using TEMPO in a competitive clock reaction. Effects of several parameters in ATRP systems were examined, including alkyl groups, ligands, transferred groups, and solvents. The obtained data were consistent with ATRP kinetics, and provided further quantitative insights into understanding of ATRP processes. |
