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Effect of iPP Molecular Weight on Dynamic Viscoelastic Properties of iPP/EPDM Blends

  • CHEMICAL PHYSICS OF POLYMER MATERIALS
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Abstract

Dynamic rheological measurements were used to characterize the polymer blends based on three different molecular weight grades of iPP and uncured EPDM phase prepared by melt processing. It was shown that individual iPPs and iPP/EPDM blends demonstrate the shear thinning which started at very low frequencies. The viscoelastic property of the iPP/EPDM blends was found to change with the variation of blends’ composition and iPP molecular weight. All compositions with various EPDM content displayed an increase in elastic response with frequency. The blends changed from solid-like to liquid-like behavior as the frequency was decreased.

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Funding

This work was performed under financial support of the Ministry of Education and Science of the Russian Federation (contract no. FFZE-2022-0010).

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Authors and Affiliations

  1. Semenov Institute of Chemical Physics Russian Academy of Sciences, Moscow, Russia

    E. V. Prut, T. I. Medintseva & O. P. Kuznetsova

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  1. E. V. Prut
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  2. T. I. Medintseva
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  3. O. P. Kuznetsova
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Correspondence to E. V. Prut.

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Prut, E.V., Medintseva, T.I. & Kuznetsova, O.P. Effect of iPP Molecular Weight on Dynamic Viscoelastic Properties of iPP/EPDM Blends. Russ. J. Phys. Chem. B 17, 478–488 (2023). https://doi.org/10.1134/S1990793123020306

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  • DOI: https://doi.org/10.1134/S1990793123020306

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