Microwave-initiated living free radical polymerization: optimization of the preparative scale synthesis of Rasta resins
摘要:
Microwave heating of high-loading TEMPO-methyl resin with functionalized styrenyl monomers in an ADVANCER (TM) preparative scale microwave synthesizer affords larger resin beads (> 375 mu m) via living free radical polymerization (LFRP). Unlike homogeneous MAOS reactions, the heterogeneous LFRP reaction is not directly scalable and required significant optimization. Under modified conditions, high-loading Rasta resins (> 3.8 mmol/g) are reproducibly obtained in 40-100 g quantities. (c) 2006 Elsevier Ltd. All rights reserved.