Poly(2-acrylamidoglycolic acid) (PAGA): Controlled Polymerization Using RAFT and Chelation of Metal Cations

• DOI: 10.1021/acs.macromol.8b01260
• Publication Date: 2018-09-12T13:46:51Z
• Authors: Lisa Volkmann; Moritz Köhler; Fabian H. Sobotta; Marcel T. Enke; Johannes C. Brendel; Felix H. Schacher
• Keywords: Chain transfer; Raft

Polymer–metal hybrids are interesting materials in general and serve as precursors for a wide range of possible applications. Herein, we present the controlled radical polymerization 2-acrylamidoglycolic acid (AGA), polyelectrolyte capable chelating various metals, using reversible addition–fragmentation chain transfer (RAFT) polymerization. Polymerization kinetics behavior aqueous solution were investigated PAGA homopolymers, further show that double hydrophilic poly(N-acryloylmorpholine)-block-PAGA (PNAM-b-PAGA) or poly(ethylene oxide)-block-PAGA (PEO-b-PAGA) block copolymers with varying weight fractions can be prepared. Upon addition different metal cations, these form wormlike spherical hybrid assemblies media. The aggregates react reversibly to changes pH, their size shape influenced by PAGA/metal ratio, overall fraction, type cation, copolymer concentration.