Abstract
The application of the charged-neutral triblock copolymer is extremely wide, but in the present reference for its nanostructure which is still not entirely understood. Therefore, we used dissipative particle dynamics simulation method to investigate the self-assembly behaviors of the neutral triblock copolymer as well as the charged-neutral triblock copolymer in aqueous solution, and discuss the effect of morphological changes by electrostatic interaction. And we also observed the morphologies by changing the composition of the triblock copolymer and the concentration of the copolymer in aqueous solution.The results show that by changing the composition of the copolymer and the concentration of the copolymer which can be effectively control the morphologies, such as micelle, lamellae, cylinder, net and so on. Indeed, we could make use of the electrostatic interaction to induce the morphological changes in the charged system. However, there are all micelle structures which at low concentrations in the neutral block copolymer system and charged block copolymer system. But due to the effect of electrostatic interaction, the size and the aggregation of micelle are different. Therefore, this method can be used to prepare a smaller size of the polymeric micelles, to be applied to drug delivery, biomimetic materials and other related fields.