Microcapsule with poly(ethylene-co-viny-lacetate) (EVA) core-polyurethane (PU) shell structure was synthesized by interfacial polymerization in aqueous polyol dispersion with ethylene diamine as the chain extender of toluene diisocyanate in poly(vinyl alcohol) aqueous solution as the stabilizing agent. The effects of polyol constituent on the average particle size and distributions, morphologies, color strength, and friction fastness of core-shell particles were investigated to design microcapsule. The friction fastness of printed fabrics with EVA core-PU shell microcapsules became the increase to 4-5 grades. (c) 2006 Wiley Periodicals, Inc.