Stable Free Radical Polymerization Process: Kinetic and Mechanistic Study of the Thermal Decomposition of MB-TMP Monitored by NMR and ESR Spectroscopy

A detailed experimental investigation was conducted to study the thermal decomposition of the nitroxide adduct N-(1‘-methylbenzyloxy)-2,2,6,6-tetramethylpiperidine (MB-TMP) at elevated temperatures using 1H NMR and ESR spectroscopy. At 125 °C, the concentration of TEMPO was followed by ESR spectroscopy, while 1H NMR spectroscopy was employed to monitor MB-TMP and the various byproducts of MB-TMP decomposition: styrene, N-hydroxylamine of TEMPO, …