MACROMOLECULAR POROSIMETRY

A new method for the determination of pore size distribution in porous materials has been developed. The method is based on measuring the pr obability of solubilized macromolecules to penetrate the pore space of a solid substrate. In the absence of any interaction between the macr omolecules and the matrix of the porous material, the value of the pro bability is determined only by ratio of sizes of the macromolecules an d the pores. A special software package was developed for slit, cylind rical, and mixed pores.