| 초록 |
Supercritical fluids technology has become an interdisciplinary field, utilized by chemical engineers, chemists, food scientists, material scientists, and researchers in biotechnology and environmental control. It is important to realize that the development of high- pressure process depends on an understanding of the phase behavior of the system and that phase behavior at high pressures can be quite perplexing. We can predict the phase behavior of supercritical fluids through the thermodynamic approaches. In this study, we use the lattice model including the specific interaction such as hydrogen bonds, and it is extended to the equation of state. To account for free volume effects, firstly, pure components are mixed to form a close-packed polymer solutions and next, holes are introduced to mix with the close-packed solution which is considered to be a pseudo-substance. Then, we introduce this model to illustrate phase behavior of a supercritical fluid. |
