Preparation of fluoropolymer materials with different porous morphologies by an emulsion template method using supercritical carbon dioxide as a medium.

ABSTRACT: The choice of a suitable surfactant is key to the formation of a stable water-in-CO₂ (W/C) or CO₂-in-water (C/W) emulsion. It is even more critical in stabilization of the emulsion containing carbon dioxide (CO₂). In this study, the successful preparation of W/C emulsion was achieved by using the amphiphilic block polymer poly(ethylene glycol) methyl ether-b-poly(trifluoroethyl methacrylate) (mPEG₄₅-b-(TFEMA) _n ) as a surfactant, in which CO₂ was used as a solvent for the fluoromonomer, trifluoroethyl methacrylate (TFEMA). In the case of the W/C emulsion, CO₂ and TFEMA were used as the continuous phase and water as the internal phase of the emulsion system. It has been found that in the length

SUBMITTER: Chen J 

PROVIDER: S-EPMC9063414 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature