Critical Brush Density for the Transition between Carpet-Only and Carpet/Brush Double-Layered Structures.2.Hydrophilic Chain Length Dependence

摘要

Ionic amphiphilic diblock copolymers form monolayers on the water surface when the hydrophobic segment length is long enough.The monolayer consists of a hydrophobic layer on the water and a hydrophilic layer just beneath the water surface.Although the hydrophilic layer is expected to be a polyelec-trolyte brush structure,it is not a simple layer but has a carpet + brush double-layered structure when the hydrophilic segment is long enough and the brush density is high enough.