Abstract
An attempt was made to establish a method for evaluating the pore characteristics of porous polymeric membrane having the mean pore diameter larger than 10 nm through electron micrograph with help of stereology (EM method). For this purpose, ellipsoidal, spherical, and straight-through cylindrical pore models were adopted. Theoretical equations relating the pore radius distribution function N(r) to the distribution function F(x) of the length x of test lines cut off by pores in an electron micrograph were derived as follows;
where, Φe is a shape factor and the suffix e and s denote ellipsoidal and spherical pores. The mean pore radii, porosity, and pore radius distribution functions were evaluated from N(r) and compared with those determined by various methods including mercury intrusion, fluid permeability and bubble pressure, flow rate, surface area, apparent density, and swelling methods for porous regenerated cellulose membrane prepared by micro-phase separation method and polycarbonate membrane Nuclepore.®
Similar content being viewed by others
Article PDF
References
For example, W. Pusch and A. Walch, J. Membrane Sci., 10, 325 (1982).
K. Kamide and S. Manabe, “Ultrafiltration Membrane and Application,” A. R. Copper Ed., Plenum Publishing Corp., New York, N. Y., 1980. p 173.
K. Kamide, S. Manabe, and S. Kajita, unpublished work.
For example, A. Kakuta, M. Kuramoto, M. Ohno, H. Kushida, A. Tanioka, and K. Ishikawa, J. Polym. Sci., 18, 3229 (1980).
U. Merin and M. Cheryan, J. Appl. Polym. Sci., 25, 2139 (1980).
K. Mitteilungen, Acta Polymerica, 32, 726 (1981).
For example, N. Suwa, “Stereology,” Iwanami Publishing Corp., Tokyo, 1977.
K. Kamide, S. Manabe, and T. Matsui, Kobunshi Ronbunshu, 34, 299 (1977).
K. Kamide, S. Manabe, T. Matsui, S. Kajita, and T. Sakamoto, Kobunshi Ronbunshu, 34, 205 (1977).
K. Kamide and S. Manabe, ACS Symposium Series, No. 269, “Materials Science of Synthetic Membranes,” D. R. Lioyd, Ed., 1985. p 197.
S. Manabe, M. Iwata, and T. Inoue, Japanese Patent Application 58-89625 (1983).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Manabe, Si., Shigemoto, Y. & Kamide, K. Determination of Pore Radius Distribution of Porous Polymeric Membranes by Electron Microscopic Method. Polym J 17, 775–785 (1985). https://doi.org/10.1295/polymj.17.775
Issue Date:
DOI: https://doi.org/10.1295/polymj.17.775