Abstract
A new block copolymer composed of hydrophilic polyamide as outer segments and polyoxyethylene as an inner segment was obtained by anionic polymerization of a bicyclic oxalactam, 8-oxa-6-azabicyclo[3.2.1]octan-7-one, using the isocyanate-terminated polyoxyethylene as an activator. A novel polyamide macromer having a vinylbenzyl end group was prepared by anionic polymerization of the bicyclic oxalactam followed by the reaction with p-vinylbenzylamine. Its radical copolymerization with styrene was conducted to obtain a graft copolymer consisting of a nonpolar hydrophobic polystyrene stock and hydrophilic polyamide branches.
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