| 초록 |
Janus particles have been widely considered as Pickering emulsion stabilizers due to their intriguing biphasic particle structure. In principle, the stability of Pickering emulsions is determined by the wettability-driven adhesion energy of particles. Hence, we can easily understand that compared with spherical Janus particles, platelet-shaped Janus particles can exhibit an ideal interfacial adhesion for stabilization of Pickering emulsion drops. Herein, we introduce a synthetic method to obtain amphiphilic Janus platelets. The essence of our approach is to conduct the ATRP on both sides of the zirconium phosphate platelets that are oriented at the oil-water interface, thus enabling simultaneous grafting of hydrophilic and hydrophobic polymer chains on each surface of the platelets. Using the amphiphilic Janus platelets, we attempt to experimentally demonstrate that they play a major role in improving the structural stability of Pickering emulsions by perfect wetting. |
