Memorias de investigación
Research Publications in journals:
Evaluating the reinforcement of inorganic fullerene-like nanoparticles in thermoplastic matrices by depth-sensing indentation
Year:2013

Research Areas
  • Organic metals,
  • Nanomaterials,
  • Polymers

Information
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.
International
Si
JCR
Si
Title
Journal of Physical Chemistry C
ISBN
1932-7447
Impact factor JCR
4,814
Impact info
Volume
117
http://dx.doi.org/10.1021/jp406513y
Journal number
40
From page
20936
To page
20943
Month
OCTUBRE
Ranking
Q1
Participants
  • 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

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Bioingeniería y Materiales (BIO-MAT)
  • Departamento: Ingeniería y Ciencia de los Materiales