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Citació: Velasco J.I. [et al.]. Polypropylene/Clay Nanocomposites: Combined effects of clay treatment and compatibilizer polymers on the structure and properties. "Journal of Applied Polymer Science", 2006, vol. 102, núm. 2, p. 1213-1223.
Títol: Polypropylene/Clay Nanocomposites: Combined effects of clay treatment and compatibilizer polymers on the structure and properties
Autor: Velasco Perero, José Ignacio Veure Producció científica UPC; Ardanuy Raso, Mònica Veure Producció científica UPC; Redondo Realinho, Vera Cristina de Veure Producció científica UPC; Sousa Pais Antunes, Marcelo de Veure Producció científica UPC; Fernández Renna, Ana Inés; González-Peña, J.I.; Rodríguez-Pérez, Miguel Ángel; Saja, José Antonio de
Data: 2006
Tipus de document: Article
Resum: Combined effects of clay treatment and compatibilizer polymers on the structure and properties of polypropylene/clay nanocomposites were studied. Dynamic mechanical analysis was used to analyze comparatively the dynamic mechanical response of different nanocomposites prepared from polypropylene and montmorilloniterich bentonite, and to relate such response with the material microstructure. Two different bentonites were used: a purified Spanish natural bentonite was organophillized by means of 11-undecyl-ammonium ion and a commercial bentonite organophillized with dimethyl dehydrogenated tallow ammonium ion. Three different polar copolymers were employed as compatibilizer agents in some of the formulations: maleic anhydride-grafted polypropylene, maleic anhydride-grafted poly(styrene-co-ethylenebutyleneco- styrene), and poly(ethylene terephthalate-co-isophthalate) (PET). To ascertain the microstructure characteristics in the nanocomposites, wide angle X-ray diffraction, transmission electron microscopy, and differential scanning calorimetry techniques were used. The nanocomposites containing both bentonite organophillized with 11-undecylammonium ion and PET, and maleated PP as compatibilizer system, were found to have the highest storage modulus and the smallest loss factor values, which was mainly due to the better clay platelets dispersion. The dynamic mechanical response of nanocomposites prepared with bentonite organophillized with dimethyl dehydrogenated tallow ammonium ion and maleated SEBS was strongly affected by the presence of this compatibilizer. The temperature of PP and a, b, and g relaxations strongly depended on the interactions between the different phases in the nanocomposites.
ISSN: 0021-8995
URI: http://hdl.handle.net/2117/6851
DOI: DOI 10.1002/app.24419
Apareix a les col·leccions:POLYCOM - Polimers i compòsits: tecnologia. Articles de revista
Departament d'Enginyeria Tèxtil i Paperera. Articles de revista
Departament de Ciència dels Materials i Enginyeria Metal·lúrgica. Articles de revista
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