PS-b-P4VP-b-PAA

The formation of block copolymer micelles depends on the attraction of hydrophobic end and the repulsion of hydrophilic end. According to the law of thermodynamics, when the surface free energy of the core-shell interface is smaller, the micelle is more stable. At this time, the micelle shrinks, the interfacial area shrinks, and the spatial repulsion force at the hydrophilic end increases; The interfacial tension and spatial repulsion restrict each other, so that the micelles can not aggregate or relax indefinitely to form a micellar system with stable particle size.

msds---PS-b-P4VP-b-PAA