Abstract
The effect of xenon difluoride (XeF2) vapors on the surface properties of the polymer films irradiated by heavy ions and of the nucleopore nanofilters produced from these films is studied. The procedure for modifying nucleopore membranes made of poly(ethylene terephthalate) and polyimide in XeF2 vapors is developed. The hydrophilicity, electrosurface properties, and selectivity of modified membranes are investigated. It is shown that the water contact angle on the membrane surface decreases as a result of modification, and the extent of its change depends on the duration and temperature of membrane treatment. Electrokinetic measurements did not reveal any changes in the surface charge during the modification of the membranes prepared from poly(ethylene terephthalate), but their ion selectivity increased twofold. It is shown that the hydrodynamic diameter of the pores of modified membranes reversibly decreases with an increase in transmembrane pressure. The dislosed effects are explained by the presence of an elastoplastic gel-layer on the surfaces of the membrane and its pores. The gel-layer accumulates considerable surface and bulk charges and is characterized by the high hydraulic resistance hindering the convective ion transport.
Similar content being viewed by others
REFERENCES
Dytnerskii, Yu.I., Baromembrannye protsessy. Teoriya i raschety (Baromembrane Processes: Theory and Calculations), Moscow: Khimiya, 1986.
Churaev, N.V., Kolloidn. Zh., 1985, vol. 47, no. 1, p. 112.
Pouliot, Y., Wijers, M.C., Gauthier, S.F., and Nadeau, L., J. Membr. Sci., 1999, vol. 158, p. 105.
Mockel, D., Staude, E., and Guiver, M.D., J. Membr. Sci., 1999, vol. 158, p. 63.
Lindan, J. and Jönsson, A.-S., J. Membr. Sci., 1999, vol. 160, p. 65.
Shataeva, L.K., Ryadnova, I.Yu., Nechaev, A.N., et al., Kolloidn. Zh., 2000, vol. 62, no. 1, p. 126.
Rabek, J.F., Experimental Methods in Polymer Chemistry, Chichester: Wiley, 1980, vol. 2. Translated under the title Eksperimental'nye metody v khimii polimerov, Moscow: Mir, 1985, vol. 2, p. 225.
Ershova, G.V., Zorin, Z.M., Novikova, A.V., and Churaev, N.V., Poverkhnostnye sily v tonkikh plenkakh(Surface Forces in Thin Films), Moscow: Nauka, 1979, p. 168.
Pashley, R.M. and Kitchener, J.A., J. Colloid Interface Sci., 1979, vol. 71, no. 3, p. 491.
Berezkin, V.V., Kiseleva, O.A., Nechaev, A.N., et al., Kolloidn. Zh., 1994, vol. 56, no. 3, p. 319.
Steiskal, E.D. and Tanner, J.E., J. Chem. Phys., 1965, vol. 42, no. 1, p. 228.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Sergeev, A.V., Khataibe, E.V., Berezkin, V.V. et al. Modification of the Surfaces of Polymer Films Irradiated by Heavy Ions and Nucleopore Nanofilters by XeF2 Vapors. Colloid Journal 65, 84–88 (2003). https://doi.org/10.1023/A:1022327226695
Issue Date:
DOI: https://doi.org/10.1023/A:1022327226695