Evaluating the reinforcement of inorganic fullerene-like nanoparticles in thermoplastic matrices by depth-sensing indentation

Flores, A.; Naffakh Cherradi Hadi, Mohammed; Díez-Pascual, Ana M.; Ania, F. y Gómez Fatou, Marián A. (2013). Evaluating the reinforcement of inorganic fullerene-like nanoparticles in thermoplastic matrices by depth-sensing indentation. "Journal of Physical Chemistry C", v. 117 (n. 40); pp. 20936-20943. ISSN 1932-7447. https://doi.org/10.1021/jp406513y.

Descripción

Título: Evaluating the reinforcement of inorganic fullerene-like nanoparticles in thermoplastic matrices by depth-sensing indentation
Autor/es:
  • Flores, A.
  • Naffakh Cherradi Hadi, Mohammed
  • Díez-Pascual, Ana M.
  • Ania, F.
  • Gómez Fatou, Marián A.
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Physical Chemistry C
Fecha: 10 Octubre 2013
Volumen: 117
Materias:
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Ingeniería y Ciencia de los Materiales [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The reinforcing effect of inorganic fullerene-like tungsten disulfide (IF-WS2) nanoparticles in two different polymer matrices, isotactic polypropylene (iPP) and polyphenylene sulfide (PPS), has been investigated by means of dynamic depth-sensing indentation. The hardness and elastic modulus enhancement upon filler addition is analyzed in terms of two main contributions: changes in the polymer matrix nanostructure and intrinsic properties of the filler including matrix-particle load transfer. It is found that the latter mainly determines the overall mechanical improvement, whereas the nanostructural changes induced in the polymer matrix only contribute to a minor extent. Important differences are suggested between the mechanisms of deformation in the two nanocomposites, resulting in a moderate mechanical enhancement in case of iPP (20% for a filler loading of 1%), and a remarkable hardness increase in case of PPS (60% for the same filler content). The nature of the polymer amorphous phase, whether in the glassy or rubbery state, seems to play here an important role. Finally, nanoindentation and dynamic mechanical analysis measurements are compared and discussed in terms of the different directionality of the stresses applied.

Más información

ID de Registro: 29103
Identificador DC: http://oa.upm.es/29103/
Identificador OAI: oai:oa.upm.es:29103
Identificador DOI: 10.1021/jp406513y
URL Oficial: http://pubs.acs.org/doi/abs/10.1021/jp406513y
Depositado por: Memoria Investigacion
Depositado el: 17 Abr 2015 14:02
Ultima Modificación: 17 Abr 2015 14:02
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