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Elaboration and thermal analysis of nanocomposites based on poly(methyl methacrylate-co-4-vinylpyridine) and Maghnia bentonite

Authors

  • Kamal Ouaad,

    1. Université des Sciences et de la Technologìe Houari Boumediene, Laboratoire des Matériaux Polymères, Faculté de Chimie, BP 32 El-Alia, Bab-Ezzouar 16111, Algiers, Algeria
    2. Département de Chimie, Université M'Hamed Bougara, Faculté des Sciences, Avenue de l'Indépendance, 35000, Boumerdès, Algeria
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  • Saïd Djadoun

    Corresponding author
    1. Université des Sciences et de la Technologìe Houari Boumediene, Laboratoire des Matériaux Polymères, Faculté de Chimie, BP 32 El-Alia, Bab-Ezzouar 16111, Algiers, Algeria
    • Université des Sciences et de la Technologìe Houari Boumediene, Laboratoire des Matériaux Polymères, Faculté de Chimie, BP 32 El-Alia, Bab-Ezzouar 16111, Algiers, Algeria
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Abstract

Nanocomposites based on an organically modified bentonite, from Maghnia Algeria (OBT) and a copolymer of methyl methacrylate with 4-vinylpyridine (PMM4VP) synthesized in dioxan at room temperature using a neutral Ni(II)α-benzoinoxime complex as a single component initiator, were elaborated via solution intercalation method and characterized by several techniques. X-ray diffraction and transmission electron microscopy investigations indicate that mainly exfoliated and intercalated PMM4VP/OBT nanocomposites were elaborated and that the degree of exfoliation decreases with an increase of the OBT loading. Thermal analyses of these nanocomposites compared with their virgin copolymer confirmed a significant improvement of their thermal stability as evidenced by an increase of 28°C in their onset degradation temperatures. In addition, differential scanning calorimetry displayed an increase in the range of 12–18°C in their glass transition temperatures relative to their virgin copolymer. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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