Factors defining the selectivity polymer membranes: A fractal model

摘要

It is shown that the selectivity of the polymer nonporous membranes by the diffusivity depends on the polymer structure by rather complex way. The most important characteristic in this case is the dimension D-t controlling the gas transport processes and the molecular mobility degree influences only at large enough values of diameter of the selected gas molecules, the difference of these diameters and the dimension D-t. (c) 2006 Wiley Periodicals, Inc.