Dual CO2/temperature-responsive diblock copolymers confer controlled reversible emulsion behavior

Abstract

In this study, we demonstrate that the amphiphilic properties of dual CO₂- and temperature-responsive diblock copolymers can be switched on/off by CO₂ bubbling at certain temperature and solution pH combinations to achieve oil-in-water emulsification. More importantly, phase transition studies and emulsion experiments clearly confirm that these copolymers enable efficient control of reversible emulsification processes under specific environmental conditions.