Shuhui Qin, Jocelyn Saget, J. Pyun
Nov 7, 2003
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Journal
Macromolecules
Abstract
The synthesis of well-defined homopolymers and random, block, and gradient copolymers from octadecyl acrylate (OA) and octadecyl methacrylate (OMA) using atom transfer radical polymerization (ATRP) is reported. Random copolymers were synthesized by the one-pot copolymerization of either tert-butyl acrylate/octadecyl acrylate (Mn,p(tBA-r-OA) = 13 680; Mw/Mn = 1.13) or tert-butyl methacrylate/octadecyl methacrylate (Mn,p(tBMA-r-OMA) = 24 250; Mw/Mn = 1.14) monomer pairs. Additionally, gradient copolymers were prepared by the simultaneous copolymerization of either tert-butyl acrylate/octadecyl methacrylate (Mn,p(tBA-co-OMA) = 21 790; Mw/Mn = 1.25) or tert-butyl methacrylate/octadecyl acrylate (Mn,p(tBMA-co-OA) = 21 900; Mw/Mn = 1.20) monomer pairs. AB and ABA triblock copolymers containing octadecyl groups were also prepared with controlled molar mass and composition. The sequence of blocking was varied starting from either poly(tert-butyl (meth)acrylate) or poly(octadecyl (meth)acrylate) macroinitiators. T...