| 초록 |
Complex coacervation, a liquid-liquid phase separation, occurs when two oppositely charged polyelectrolytes association aqueous solutions. Hydrogels with coacervate block domain were formed by mixing ABA and A'BA' triblock copolymer solutions in water where A and A' are oppositely charged blocks. Since the complex coacervates are responsive to ionic strength, pH, and salt concentration, the complex coacervate driven hydrogels are stimuli responsive, and thus can be used in bio-related industry. In this study, poly(ally glycidyl ether-b-ethylene oxide-b-allyl glycidyl ether) triblock copolymers were synthesized anionically and functionalized with positively and negatively charged moieties through a thiol-ene reaction. Rheological properties of the hydrogel were measured as a function of salt concentration, pairs of charged group, and polymer concentration. In addition, time-salt superposition principle was applied to understand the effect of salt concentration on the hydrogel. |
