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Memorias de investigación
Artículos en revistas:
Evaluating the reinforcement of inorganic fullerene-like nanoparticles in thermoplastic matrices by depth-sensing indentation
Año:2013
Áreas de investigación
  • Metales orgánicos,
  • Nanomateriales,
  • Polimeros
Datos
Descripción
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.
Internacional
Si
JCR del ISI
Si
Título de la revista
Journal of Physical Chemistry C
ISSN
1932-7447
Factor de impacto JCR
4,814
Información de impacto
Volumen
117
DOI
http://dx.doi.org/10.1021/jp406513y
Número de revista
40
Desde la página
20936
Hasta la página
20943
Mes
OCTUBRE
Ranking
Q1
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Araceli Flores (IEM-CSIC)
  • Autor: Mohammed Naffakh Cherradi-Hadi (UPM)
  • Autor: Ana M. Díez-Pascual (ICTP-CSIC)
  • Autor: Fernando Ania (ICTP-CSIC)
  • Autor: Marián A. Gómez-Fatou (ICTP-CSIC)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Bioingeniería y Materiales (BIO-MAT)
  • Departamento: Ingeniería y Ciencia de los Materiales
S2i 2021 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)