“双亲性”嵌段共聚物胶束形貌调控的研究

The Morphological Study of Amphiphilic Block Copolymer Micelles

本文综述了在选择性溶剂中影响"双亲性"嵌段共聚物胶束行为和胶束形貌的主要因素,包括溶液温度、选择性溶剂种类、嵌段长度、链段结晶、链段与溶剂间氢键作用以及共聚物浓度等对胶束最终形貌产生影响的因素;系统介绍了对嵌段共聚物胶束形貌进行调控的实验方法;在此同时介绍了对环境刺激如温度和pH变化等具有响应性能的"双亲性"嵌段共聚物在选择性溶剂中胶束行为研究的最新进展;最后提出了该研究领域目前存在的问题和今后的可能发展方向。

In this paper, the main factors which may influence the micelle morphology and behavior of amphiphilic block copolymers in selective solvents are reviewed. These factors mainly include the solution temperature, the type of selective solvents, the lengths of blocks, the crystalline block, the hydrogen-bond interaction between the blocks and the solvent as well as the concentration of the block copolymers. The experimental methods for controlling the micelle morphology of amphiphilic block copolymers in selective solvents are then summarized. The recent advances in the mieellar behaviors of a special type of amphiphilic block copolymers in selective solvents, which are capable to response to the external stimuli such as the environmental temperature and pH value, are also presented. Finally, the existing problems and future possible development directions of this research field are discussed.