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Superlattices of lamellae in microporous oriented polyolefine films

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Abstract

The structure and mechanism of the formation of superlattices lamellae in microporous polyolefine (polyethylene and polypropylene) films obtained by polymer melt extrusion followed by annealing, uniaxial extension, and thermal fixation stages have been studied by scanning electron and atomic-force microscopy. It has been shown that oriented anisometric particles, i.e., lamellae aggregates, are formed in films as the spin draw ratio λ f increases. At the stage of uniaxial extension (pore formation) of annealed films, a particle ensemble transforms to spatial superlattices of lamellae. Numerical processing of electron microscopy images of the film surface show that the nonmonotonic dependences of the correlation length of density fluctuations and the ratios of the alternation period of particles along extension to their thickness on the parameter λ f correspond to a unified mechanism of lamellae ordering.

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Correspondence to D. V. Novikov.

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Original Russian Text © D.V. Novikov, G.K. Elyashevich, V.K. Lavrentyev, I.S. Kuryndin, N.N. Saprykina, G.I. Vorobyev, A.V. Varlamov, V. Bukošek, 2013, published in Fizika Tverdogo Tela, 2013, Vol. 55, No. 2, pp. 398–404.

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Novikov, D.V., Elyashevich, G.K., Lavrentyev, V.K. et al. Superlattices of lamellae in microporous oriented polyolefine films. Phys. Solid State 55, 443–449 (2013). https://doi.org/10.1134/S1063783413020212

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  • DOI: https://doi.org/10.1134/S1063783413020212

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