Bulk synthesis of poly(tert-butyl methacrylate) long macromonomer with narrow distribution by atom transfer radical polymerization and nucleophilic substitution

Abstract

Poly(tert-butyl methacrylate) macrointermediates (PtBMA-Br) with a bromine atom end group were synthesized in the presence of the single ligand N,N,N′,N″,N″-pentamethyldiethylenetriamine (PMDETA) by atom transfer radical polymerization (ATRP) in bulk. A macromonomer was successfully prepared by the nucleophilic substitution of the chain end to attain a high efficiency of C=C incorporation (89-92%; 1HNMR). The macromonomer molecular weight was controlled to result in a high molecular weight (11000) with a narrow distribution of 1.20. Copyright © 2006 The Chemical Society of Japan.