Poly(vinyl chloride)/metallic oxides/organically modified montmorillonite nanocomposites: Preparation, morphological characterization, and modeling of the mechanical properties
Corresponding Author
Antonio Rodolfo Jr.
Braskem S/A, Polymers Business Unit, Avenida das Nações Unidas, 8501, 23rd floor, CEP 05425-070, São Paulo, SP, Brazil
Department of Polymer Technology, School of Chemical Engineering, State University of Campinas, P. O. Box 6066, CEP 13083-970, Campinas, SP, Brazil
Braskem S/A, Polymers Business Unit, Avenida das Nações Unidas, 8501, 23rd floor, CEP 05425-070, São Paulo, SP, Brazil===Search for more papers by this authorLucia Helena Innocentini-Mei
Department of Polymer Technology, School of Chemical Engineering, State University of Campinas, P. O. Box 6066, CEP 13083-970, Campinas, SP, Brazil
Search for more papers by this authorCorresponding Author
Antonio Rodolfo Jr.
Braskem S/A, Polymers Business Unit, Avenida das Nações Unidas, 8501, 23rd floor, CEP 05425-070, São Paulo, SP, Brazil
Department of Polymer Technology, School of Chemical Engineering, State University of Campinas, P. O. Box 6066, CEP 13083-970, Campinas, SP, Brazil
Braskem S/A, Polymers Business Unit, Avenida das Nações Unidas, 8501, 23rd floor, CEP 05425-070, São Paulo, SP, Brazil===Search for more papers by this authorLucia Helena Innocentini-Mei
Department of Polymer Technology, School of Chemical Engineering, State University of Campinas, P. O. Box 6066, CEP 13083-970, Campinas, SP, Brazil
Search for more papers by this authorAbstract
Poly(vinyl chloride), metallic oxides (from copper, molybdenum, and zinc), and organically modified montmorillonite (O-MMT) nanocomposites were prepared in a melt-blending or intercalation-in-the-molten-state process. The morphology of the nanocomposites was evaluated with X-ray diffraction (XRD) and transmission electron microscopy (TEM). Properties, such as the mechanical, thermal, and electrical properties, and the dynamic thermal stability against dehydrochlorination were also evaluated. Nanocomposites with a hybrid intercalated/exfoliated structure were obtained in all of the situations considered, as demonstrated by the XRD and TEM results and indirectly by the increment of Young's modulus of the formulations with increasing amount of O-MMT incorporated. The modeling of Young's modulus by the Halpin–Tsai, Hui–Shia, and Lewis–Nielsen theories showed that the process of nanocomposite preparation allowed the aspect ratio of the clay particles to increase; these values were comparable to those nanocomposites obtained by other researchers with different polymeric matrices and methodologies. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
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