Phase Behavior of Spherical Polyelectrolyte Brushes Solution in Supercritical Carbon Dioxide

摘要

Supercritical fluids (SCFs) have attracted lots of attention due to their advantages which have been widely used in chemical engineering, material science, biological science and other area [1-2]. In the recent years, many researches focused on the application of SCFs in the processing of polymers [3]. Colloids, including microemulsions, emulsions, polymer latexes and proteins, have been applied in SCFs for their stable, size control, size selected separation, etc [4]. Supercritical carbon dioxide (scCO2) is the most often used fluid because of its abundant, inexpensive, nonflammable, nontoxic, and environmentally benign that satisfies green chemistry. The tunability of the solution by scCO2 is a powerful tool for the separation of solute from solution and the most significant processing advantages is the low separations costs [5].