Synthesis and characterization of copolymers from ethyl acrylate as the only monomer starting material by lipase-mediated chain polymerization. UV-MALDI-MS aplicacion

EDUARDO M. RUSTOY; SATO, YASUTO; HIROSHI NONAMI; ERRA BALSELLS, ROSA; ALICIA BALDESSARI

POLYMER

ELSEVIER

Lugar: AMSTERDAM; Año: 2006 vol. 48 p. 1517 - 1525

0032-3861

Abstract: Several acrylic copolymers containing, at random, sequences of ethyl polyacrylate and poly(N-(2-hydroxyethyl)acrylamide) were obtained from ethyl acrylate as the only monomer starting material in a chain polymerization process, catalyzed by the Candida antarctica lipase. In the presence of ethanolamine, the enzyme not only catalyzes the chain polymerization of ethyl acrylate but also the aminolysis of the pendant ester groups. The products, characterized by FTIR, 1H and 13C NMR and UV-MALDI-TOF-MS, show low molecular weight and high monodispersity. The activity showed by Candida antarctica lipase in the polymerization reaction is a new example of enzyme promiscuity. Keywords: Lipase-catalyzed. Chain polymerization. Ethyl acrylate. Copolymer. UV-MALDI-MS