Synthesis of novel block copolymers containing polyamide4 segments and control of their biodegradability

摘要: Different novel copolymers, ABA-type block copolymers composed of polyamide4 as outer segments and polyoxyethylene an inner segment AB- copolyamides containing another hydrophilic polyamide derived from a bicyclic lactam, were synthesized by the anionic ring-opening polymerization 2-pyrrolidone using corresponding acyllactam-type macromolecular activators. The degradation rate both in composted soil was found to decrease with increasing content second segments, although they also and/or biodegradable. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 3492–3498,