Influence of graphene-based compounds on the mechanical toughness and thermal stability of polypropylene |
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| Authors: | Juan Castillo Tomas Lozano Ricardo Garcia Luisiana Morales-Zamudio Juventino López-Barroso Pierre G Lafleur Shahir Karami Saul Sanchez-Valdes Guillermo Martinez-Colunga Francisco Rodriguez Catalina Perez-Berumen Sergio Flores Antonio García |
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| Affiliation: | 1. Departamento de Ingeniería Química y Bioquímica, Instituto Tecnológico de Ciudad Madero, Av Primero de Mayo S/N, Col. Los Mangos, C.P. 89440 Ciudad Madero, Tamaulipas, Mexico;2. Chemical Engineering Department, École Polytechnique de Montréal, P.O Box 6079, Stn Centre-Ville Montreal, Quebec, H3C 3A7 Canada;3. Centro de Investigación en Química Aplicada (CIQA), Blvd. Enrique Reyna No. 140, C.P. 25100 Saltillo, Coahuila, Mexico;4. Facultad de Ciencias Químicas, Universidad Autonoma de Coahuila, Cardenas Valdez S/N, República, 25080 Saltillo, Coahuila, Mexico;5. Centro de Investigación en Materiales Avanzados, Avenida Miguel de Cervantes Saavedra 120, 31136 Chihuahua, Chihuahua, Mexico;6. Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Nuevo León, Avenue Pedro de Alva S/N, 66450 S.N. de los Garza, Nuevo León, Mexico |
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| Abstract: | A study of the improvement of the mechanical and thermal properties of nanocomposites prepared with polypropylene (PP) and different graphene samples graphene oxide (GO), reduced GO (RGO), and commercial graphene (G)] is presented. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy characterization were applied to the graphene samples. The nanocomposites were characterized by thermogravimetric analysis, XRD, differential scanning calorimetry, transmission electron microscopy (TEM), tensile, and impact resistance tests. PP/RGO nanocomposites showed significant improvement in mechanical and thermal properties. Sample PP/RGO-0.75 resulted in an increment in Young's modulus (51%), tensile strength (24%), and elongation at break (15%). This is attributed to a good dispersion state, a higher crystallinity percentage, and a good interfacial adhesion between PP and RGO. Sample PP/RGO-0.50 exhibited an increase of 197 °C in the temperature at which a loss in weight of 5% occurred, compared to that for pure PP. The height of stacked layers calculated by XRD measurements was similar to the value observed by TEM. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137, 48258. |
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| Keywords: | graphene and fullerenes mechanical properties nanotubes structure–property relationships thermal properties |
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