Observatorio de I+D+i UPM

Memorias de investigación
Ponencias en congresos:
Depth-sensing indentation in inorganic fullerene-like reinforced thermoplastic matrices
Año:2014
Áreas de investigación
  • Polimeros,
  • Fulerenos y nanotubos de carbón
Datos
Descripción
Depth-sensing indentation (DSI), or instrumented indentation, represents nowadays one of the leading techniques for mechanical testing. The reinforcing effect of inorganic fullerenelike tungsten disulphide (IF-WS2) nanoparticles in two different polymer matrices, isotactic polypropylene (iPP) and polyphenylene sulphide (PPS), has been investigated using dynamic DSI. Hardness and modulus are found to initially rise with filler content and level-off at loadings of ~ 0.5 wt%. The mechanical behaviour is explained in terms of two main contributions: i) changes in the polymer matrix nanostructure upon addition of the filler and ii) intrinsic properties of IF-WS2 including matrix-particle load transfer. It is found that the former produces no more than 10% of mechanical increment with respect to the neat matrix, while the latter can approach values of 50%. Remarkable enhancements are found for PPS upon addition of IF-WS2 while only moderate increments are observed for the PP counterparts. The nature of the polymer amorphous phase (whether in the glassy or rubbery state) is suggested to play here an important role. Finally, it is found that the modulus values obtained by means of DSI are higher than those determined from dynamic mechanical analysis. This result is discussed in terms of the different directionality of the applied forces.
Internacional
Si
Nombre congreso
IUPAC World Polymer Congress 2014.The 45th International Symposium on Macromolecules (MACRO2014)
Tipo de participación
960
Lugar del congreso
Chiang Mai (Thailand)
Revisores
Si
ISBN o ISSN
DOI
Fecha inicio congreso
06/07/2014
Fecha fin congreso
11/07/2014
Desde la página
1
Hasta la página
2
Título de las actas
IUPAC World Polymer Congress 2014.The 45th International Symposium on Macromolecules (MACRO2014). Abstracts Book.
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Araceli Flores (Instituto de Estructura de la Materia IEM-CSIC)
  • Autor: Mohammed Naffakh Cherradi-Hadi (UPM)
  • Autor: Ana M. Díez-Pascual (Instituto de Ciencia y Tecnología de Polímeros ICTP-CSIC)
  • Autor: Fernando Ania (Instituo de Estructura de la Materia IEM-CSIC)
  • Autor: Marián A. Gómez-Fatou (Instituto de Ciencia y Tecnología de Polímeros ICTP-CSIC)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Física Aplicada e Ingeniería de 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)