Surfactant-Free Emulsions with Erasable Triggered Phase Inversions.
Complex emulsions including double emulsions and high-internal-phase emulsions (HIPEs) are wonderful templates for producing porous polymeric materials. Yet, surfactants and multiple emulsifications are generally needed. In this work, surfactant-free complex emulsions are successfully prepared using a CO2-responsive block copolymer through one-step emulsification. Phase inversion from HIPEs to double emulsions happens in one system upon the change in polymer amphiphilicity as a result of CO2triggering. The one-step emulsification method offers great convenience for converting the block copolymer into porous 3D scaffolds and particles. Moreover, CO2triggering is erasable so that the polymer can be repeatedly used for controllable complex emulsions as well as porous materials.
School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
Yiwen
Y
Chen
Department of Chemistry, Renmin University of China , Beijing 100872, China.
Zhen
Z
Wang
Department of Chemistry, Renmin University of China , Beijing 100872, China.
Dingguan
D
Wang
School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.|College of Materials Science and Chemical Engineering, Harbin Engineering University , Harbin 150001, China.
Ning
N
Ma
School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
Cancan
C
Li
Department of Chemistry, Renmin University of China , Beijing 100872, China.
Yapei
Y
Wang