| Abstract: | Several well-defined graft copolymers ( 7 ) having a water-soluble natural polysaccharide (dextran) stock and hydrophilic polyamide branches of different molecular weights were synthesized by using a quasi-living anionic polymerization of a bicyclic lactam 1 , namely by the reaction of the acyllactam group in the quasi-living polyamide 2 with the hydroxyl and amino groups in the dextran derivative ( 6 ), of which the reducing end was converted to an amino group. An oligosaccharide-terminated polyamide 3 was also prepared efficiently by similar coupling reaction of the corresponding quasi-living polyamide 2 , with the maltose derivative ( 5 ) having an amino group. © 1994 John Wiley & Sons, Inc. |
