Abstract
According to the data of scanning electron microscopy, gravimetry, and permeability measurements, the porous structure of membrane samples obtained in a multistage process including extension of annealed polypropylene films formed at the stage of polymer melt extrusion has been studied. It has been shown that, as the cooperativity of lamella ordering (self-assembly) increases at the stage of film extension (pore formation), the topological model of the porous phase of membranes changes from model (1), i.e., a random network of channels, to model (2), i.e., oriented through flow channels. The transition between two models is controlled by the melt spin draw ratio.
Similar content being viewed by others
References
D. V. Novikov, G. K. Elyashevich, V. K. Lavrentyev, I. S. Kuryndin, A. Anzlovar, and V. Bukošek, Phys. Solid State 56 (2), 396 (2014).
G. K. Elyashevich, E. Yu. Rozova, and E. A. Karpov, RF Patent 2140936 (April 15, 1997).
G. K. Elyashevich, A. G. Kozlov, and I. T. Moneva, Polym. Sci., Ser. B 40 (3–4), 71 (1998).
D. V. Novikov, G. K. Elyashevich, V. K. Lavrentyev, I. S. Kuryndin, N. N. Saprykina, G. I. Vorobyev, A. V. Varlamov, and V. Bukošek, Phys. Solid State 55 (2), 443 (2013).
G. K. Elyashevich, A. G. Kozlov, and E. Yu. Rozova, Polym. Sci., Ser. A 40 (6), 567 (1998).
G. K. Elyashevich, I. S. Kuryndin, V. K. Lavrentyev, A. Yu. Bobrovsky, and V. Bukošek, Phys. Solid State. 54 (9), 1907 (2012).
B. I. Shklovskii and A. L. Efros, Sov. Phys.—Usp. 18 (11), 845 (1975).
V. G. Shevchenko and A. T. Ponomarenko, Usp. Khim. LII, 1336 (1983).
R. E. Kesting, Synthetic Polymeric Membranes (Wiley, New York, 1985, p. 44; Khimiya, Moscow, 1991, p. 54).
E. R. Weibel, Stereological Methods, Vol. 2: Theoretical Foundations (Academic, London, 1980).
M. Mulder, Basic Principles of Membrane Technology (Kluwer, Boston, 1991; Mir, Moscow, 1999).
J. M. Ziman, Models of Disorder (Cambridge University Press, London, 1979; Mir, Moscow, 1982), p. 443.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © D.V. Novikov, I.S. Kuryndin, G.K. Elyashevich, 2015, published in Fizika Tverdogo Tela, 2015, Vol. 57, No. 5, pp. 1012–1016.
Rights and permissions
About this article
Cite this article
Novikov, D.V., Kuryndin, I.S. & Elyashevich, G.K. Topological structure of microporous oriented polypropylene films. Phys. Solid State 57, 1028–1032 (2015). https://doi.org/10.1134/S1063783415050248
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063783415050248