A Multi-Structural Model for Prediction of Effective Gas Permeability in Mixed-Matrix Membranes

A new model for prediction of the effective permeability of gases in mixed matrix membranes (MMMs), considering the effects of particle shape and the interfacial layer, is presented. The proposed model treats core filler particles and interfacial shell layers as complex particles. Moreover, the Bruggman mathematical procedure is used to improve the accuracy of the presented model for high concentrations of fillers in MMMs. Also, an appropriate uniform criterion is established to make efficient use of the new model for various experimental data to avoid the need for curve-fitting procedures. Finally, the proposed model is examined for several sets of experimental data. [GRAPHICS] .