Poly(ethylene imine)‐Triggered Morphological Change of Anisotropic Micelles from Direct Aqueous Self‐Assembly of an Amphiphilic Diblock Copolymer

Abstract

In this paper, “star anise”‐like anisotropic micelle (AM) from direct aqueous self‐assembly of poly(ethylene oxide)‐block‐poly(p‐dioxanone) amphiphilic diblock copolymer is presented. By adding poly(ethylene imine) (PEI), the AM shows morphological change from “star anise” to swollen sphere. The mechanism of PEI‐triggered morphological transition involving complexation and weakening of crystallizability is revealed.