In order to get a better understanding regarding material transport through charged membranes, two kinds of the composite collodion membranes were prepared and investigated by systematic and comparative studies. One of the membranes is a composite collodion membrane incoporating different quantities of perfluobenzoic and ( PFBA ) and the other is the same membrane but with pores formed by adding NaClO₄. Several membrane parameters defined by thermodynamics consideration such as membrane conductance and electroosmosis coefficient were estimated from the corresponding experiments and were examined on the basis of frictional consideration. The differences between two membranes were also discussed in relation to the structure of membrane skeleton or charge densities within the composite collodion membrane.