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Descripción
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| Poly(phenylene sulfide) (PPS) is a semicrystalline engineering thermoplastic with outstanding mechanical and thermal properties, good chemical and flame resistance, as well as easy processability, widely used in the electronics, automotive, aeronautic, and chemical industries. To further extend its structural applications, different types of fillers such as carbon nanotubes (CNTs) have been incorporatedin this polymer. However, the direct integration of CNTs leads to nanocomposites with poor mechanical performance. An alternative approach is the chemical modification of PPS via nitration and amination reactions. The modified polymers maintain the exceptional properties of the parent PPS and simultaneously display higher hydrophilicity and a number of reactive groups capable of interacting with functionalized CNTs. Thus, an aminated derivative (PPS-NH2) has been covalently anchored onto the surface of epoxy and acid-functionalized CNTs in a one-pot process. The resulting PPS-NH2-grafted-CNT nanocomposites have been extensively characterized through different techniques to obtain information about the extent of the grafting reactions, their morphology, thermal stability, crystallization behavior, and mechanical and electrical properties, and the results are compared with those attained in nanocomposites prepared by direct reinforcement. The formation of covalent linkages at the polymer-nanotube interface enables improved CNT dispersion, facilitating the stress transfer and enhancing the thermal stability and electrical conductivity of the composites. The results herein offer useful insights into the development of proper functionalization routes and grafting approaches for enhancing the properties of thermoplastic/CNT nanocomposites. | |
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Internacional
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Si |
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DOI
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DOI 10.1007/978-3-642-45229-1_29 |
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Edición del Libro
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Editorial del Libro
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Springer-Verlag Berlin Heidelberg http://link.springer.com/chapter/10.1007%2F978-3-642-45229-1_29#page-1 |
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ISBN
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978-3-642-45228-4 |
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Serie
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Título del Libro
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Handbook of Polymer Nanocomposites. Processing, Performance and Application. Volume B: Carbon Nanotube Based Polymer Composites |
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Desde página
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75 |
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Hasta página
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102 |