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Physics of the Solid State

, Volume 60, Issue 10, pp 2019–2025 | Cite as

Changes in the Structure and Mechanical Properties of Hard Elastic and Porous Polypropylene Films upon Annealing and Orientation

  • G. K. Elyashevich
  • I. S. Kuryndin
  • V. K. Lavrentyev
  • E. N. Popova
  • V. Bukošek
Mechanical Properties, Physics of Strength, and Plasticity

Abstract

The effect of the annealing temperature on the characteristics of hard elastic polypropylene samples obtained by annealing of extruded films and having an oriented lamellar structure is studied. It is established using the methods of X-ray scattering and differential scanning calorimetry that the lamellae thickness, the large period, and the degree of orientation of the folded lamellae increase with an increase in the annealing temperature, which is accompanied by an increase in the melting temperature and enthalpy. Porous films are obtained by uniaxial extension of the annealed samples in the orientation direction. It is shown that the porosity and permeability of the porous films increase with an increase in the annealing temperature, owing to an increase in the number and sizes of the through channels. The mechanical characteristics (strength, elastic modulus, and break elongation) of the hard elastic and porous films are measured, and their relationship with changes in the structure and orientation of the samples, depending on the annealing temperature, is established.

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References

  1. 1.
    L. Mandelkern, Crystallization of Polymers (Cambridge Univ. Press, Cambridge, 2004; Khimiya, Moscow, 1966).CrossRefGoogle Scholar
  2. 2.
    Ph. H. Geil, Polymer Single Crystals (Wiley-Interscience, New York, 1963).Google Scholar
  3. 3.
    V. A. Marikhin and L. P. Myasnikova, Supramolecular Structure of Polymers (Khimiya, Leningrad, 1977) [in Russian].Google Scholar
  4. 4.
    S. Ya. Frenkel and G. K. Elyashevich, in Orientation Phenomena in Polymer Solutions and Melts (Khimiya, Moscow, 1980), p. 9 [in Russian].Google Scholar
  5. 5.
    V. A. Marikhin and L. P. Myasnikova, in Oriented Polymer Materials, Ed. by S. Fakirov (Huthig and Wepf, Heidelberg, 1996).Google Scholar
  6. 6.
    R. E. Kesting, Synthetic Polymer Membranes. A Structural Perspective, 2nd ed. (Wiley, New York, 1985).Google Scholar
  7. 7.
    M. Mulder, Basic Principles of Membrane Technology (Kluwer Academic, Dordrecht, 1991).CrossRefGoogle Scholar
  8. 8.
    G. K. Elyashevich, E. Yu. Rozova, and E. A. Karpov, RF Patent No. 2140936 (1997).Google Scholar
  9. 9.
    A. L. Volynskii, A. Yu. Yarysheva, E. G. Rukhlya, L.M. Yarysheva, and N. F. Bakeev, Dokl. Phys. Chem. 454, 1 (2014).CrossRefGoogle Scholar
  10. 10.
    E. A. Karpov, V. K. Lavrentyev, E. Yu. Rozova, and G. K. Elyashevich, Vysokomol. Soedin., Ser. A 37, 2035 (1995).Google Scholar
  11. 11.
    I. K. Park and H. D. Noether, Colloid Polym. Sci. 253, 824 (1975).CrossRefGoogle Scholar
  12. 12.
    B. S. Spague, J. Macromol. Sci. Phys. 8, 157 (1973).ADSGoogle Scholar
  13. 13.
    G. K. Elyashevich, E. Yu. Rozova, and E. A. Karpov, Vysokomol. Soedin., Ser. B 33, 723 (1991).Google Scholar
  14. 14.
    S. Hild, W. Gutmannsbauer, R. Luthi, J. Fuhrmann, and H.-J. Guntherotd, J. Polym. Sci. Polym. Phys. 34, 1953 (1996).ADSCrossRefGoogle Scholar
  15. 15.
    B. Wunderlich, Macromolecular Physics. Crystal Melting (Academic, New York, 1980), Vol.3.Google Scholar
  16. 16.
    G. K. Elyashevich, A. G. Kozlov, and E. Yu. Rozova, Polymer Sci., Ser. A 40, 567 (1998).Google Scholar
  17. 17.
    G. K. Elyashevich, I. S. Kuryndin, V. K. Lavrentyev, A. Yu. Bobrovskii, and V. Bukošek, Phys. Solid State 54, 1907 (2012).ADSCrossRefGoogle Scholar
  18. 18.
    I. S. Kuryndin, V. K. Lavrentyev, V. Bukošek, and G. K. Elyashevich, Polymer Sci., Ser. A 57, 717 (2015).CrossRefGoogle Scholar
  19. 19.
    G. K. Elyashevich, D. V. Novikov, I. S. Kuryndin, A. Jelen, and V. Bukošek, Acta Chim. Sloven. 64, 980 (2017).CrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • G. K. Elyashevich
    • 1
  • I. S. Kuryndin
    • 1
  • V. K. Lavrentyev
    • 1
  • E. N. Popova
    • 1
  • V. Bukošek
    • 2
  1. 1.Institute of Macromolecular CompoundsRussian Academy of SciencesSt. PetersburgRussia
  2. 2.Faculty for Natural Sciences and EngineeringUniversity of LjubljanaLjubljanaSlovenia

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