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Morphology of ultrathin polymer films based on poly(ethylene oxide) blends

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Abstract

The structure of ultrathin (15–200 nm) films of two types prepared from polymer blends based on PEO (the crystallizable component), namely, PEO-poly(arylene sulfone oxide) (the amorphous component) and PEO-PB (the amorphous component), has been studied by atomic force microscopy. The content of PEO in both blends is 76 wt %. Ultrathin blend films have been applied on a Si substrate via substrate dipping into dilute solutions of polymer blends in chloroform at room temperature. The rate of the substrate lift has been varied from 0.1 to 1 mm/min. The amorphous-amorphous separation takes place during formation of ultrathin films of the above blends in the course of the substrate lift at the stage of gelation. The crystallization of PEO and dewetting in the resulting two-phase blend gels depend on the rate of the substrate lift and the rigidity of macromolecules of the amorphous component. Moreover, the predominant interaction of the substrate with one of the components plays a significant role in structure formation of ultrathin films of both polymer blends.

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Authors and Affiliations

  1. Karpov Research Institute of Physical Chemistry, Federal State Unitary Enterprise, ul. Vorontsovo pole 10, Moscow, 105064, Russia

    I. A. Volegova

  2. Institute of Synthetic Polymer Materials, Russian Academy of Sciences, Profsoyuznaya ul. 70, Moscow, 117393, Russia

    A. I. Buzin

Authors
  1. I. A. Volegova
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  2. A. I. Buzin
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Correspondence to I. A. Volegova.

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Original Russian Text © I.A. Volegova, A.I. Buzin, 2007, published in Vysokomolekulyarnye Soedineniya, Ser.A, 2007, Vol. 49, No. 9, pp. 1665–1671.

This work was supported by the Russian Foundation for Basic Research, project nos. 05-03-33158 and 06-03-32683.

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Volegova, I.A., Buzin, A.I. Morphology of ultrathin polymer films based on poly(ethylene oxide) blends. Polym. Sci. Ser. A 49, 1014–1019 (2007). https://doi.org/10.1134/S0965545X07090088

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  • DOI: https://doi.org/10.1134/S0965545X07090088

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