DPD simulations were employed to study the phase behavior of paclitaxel loaded PEO11-b-PLLA(9) in water and N,N-Dimethylformamide. Different ordered structures were observed in water-rich solvents. All the structures were greatly affected by solvents compositions. By varying the fractions of each component, a phase diagram of paclitaxel loaded PEO11-b-PLLA(9) in water and DMF was mapped. For all ordered structures, bicontinuous, lamella, rod, and spherical structures with different sizes could be easily observed for their wide distribution in the phase diagram. While the HPL, dumbbell, and spherical structures with uniform size were difficult to be obtained, due to their narrow distribution. (c) 2009 Elsevier B.V. All rights reserved.