Dual Responsive Methacrylic Acid and Oligo(2-ethyl-2-oxazoline) Containing Graft Copolymers

Weber, Christine; Becer, C. Remzi; Guenther, Wolfgang; Hoogenboom, Richard; Schubert, Ulrich S.

Abstract:

Graft copolymers containing a poly(methacrylic acid) (PMAA) backbone and oligo(2-ethyl-2- oxazoline) (OEtOx) side chains were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization of methacrylic acid (MAA) and OEtOx methacrylate macromonomers. In order to achieve a constant backbone length of the graft copolymer, living OEtOx chains were also directly grafted onto a deprotonated PMAA backbone in grafting densities from 7% to 92%. Both methods resulted in graft copolymers which were characterized by SEC (Mn=5500 to 18 700 g mol-1, PDIereas parts of the OEtOx side chains remained mobile.

Year:

2010

Type of Publication:

Article

Journal:

Macromolecules

Volume:

43

Pages:

160–167