| 초록 |
Complex coacervation is a liquid-liquid phase separation when oppositely charged polyelectrolytes are mixed in aqueous solutions. The dense polymer-rich phase (coacervate phase) is formed by entropic increase due to counterion release and electrostatic interaction between oppositely charged moieties. Thus, the complex coacervate is affected by charge species, ionic strength and pH. In this study, block copolymer micelles are formed by charge interaction of oppositely charged poly ether-based diblock copolymers that are prepared by anionic polymerization of PEO-PAGE and followed by post modification of PAGE block. Complex coacervate core micelles (C3Ms) are formed when the oppositely charged diblock copolymers are mixed in aqueous solutions. This study observed that increasing the salt concentration leads to reduce the hydrodynamic radius of the C3M and eventually, disintegrate C3M above at a critical salt concentration (CSC) by decreasing entropic gain by releasing counterions. |
