Gel permeation chromatographic determination of activation rate constants in nitroxide-controlled free radical polymerization, 1. Direct analysis by peak resolution

✍ Scribed by Atsushi Goto; Tomoya Terauchi; Takeshi Fukuda; Takeaki Miyamoto

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 394 KB
• Volume: 18
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.1997.030180808

✦ Synopsis

Abstract

The dissociation rate constant k~d~ related to the homolytic cleavage of the CON bond formed between a polystyrene (PS) and 2,2,6,6‐tetramethylpiperidin‐1‐oxyl (TEMPO) is determined by adopting the gel permeation chromatography peak‐resolution method to the styrene polymerization with a PS‐TEMPO adduct as a probe and the radical initiator tert‐butyl hydroperoxide. The result was given by the Arrhenius equation, k~d~ = A exp(−E/(RT)) with A = 3.0 × 10^13^ s^−1^ and E = 124 kJ · mol^−1^.