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

Flores, A. and Naffakh Cherradi Hadi, Mohammed and Díez-Pascual, Ana M. and Ania, F. and 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.

Description

Title: Evaluating the reinforcement of inorganic fullerene-like nanoparticles in thermoplastic matrices by depth-sensing indentation
Author/s:
  • Flores, A.
  • Naffakh Cherradi Hadi, Mohammed
  • Díez-Pascual, Ana M.
  • Ania, F.
  • Gómez Fatou, Marián A.
Item Type: Article
Título de Revista/Publicación: Journal of Physical Chemistry C
Date: 10 October 2013
ISSN: 1932-7447
Volume: 117
Subjects:
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería y Ciencia de los Materiales [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

More information

Item ID: 29103
DC Identifier: http://oa.upm.es/29103/
OAI Identifier: oai:oa.upm.es:29103
DOI: 10.1021/jp406513y
Official URL: http://pubs.acs.org/doi/abs/10.1021/jp406513y
Deposited by: Memoria Investigacion
Deposited on: 17 Apr 2015 14:02
Last Modified: 17 Apr 2015 14:02
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