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Ponencias en congresos:
Strain rate effect on semi-crystalline PLLA mechanical properties measured by instrumented indentation tests
Año:2014
Áreas de investigación
  • Macromoléculas y polímeros
Datos
Descripción
Poly (L-lactide) is a widely studied biomaterial, currently approved for use in a range of medical devices. Its mechanical properties can be tailored giving the material different crystallinity degrees, and with this different applications. This material, as a polymer, is prone to creep under relative low stresses at ambient temperature. In fact, this is the principal cause of loosening of biodegradable polymeric fixations. Therefore, the need of a reliable mechanical test that considers time dependencies of the material arises in order to predict the viscoelastic behaviour of PLLA components properly. This work explores the potential of instrumented indentation as a suitable technique to measure the complex non-linear time-dependent mechanical properties of PLLA. The sensitivity of elastic modulus, hardness and material creep response to strain rate is investigated. The applicability of the Oliver-Pharr method is also discussed. Likewise, the strain rate influence depending on the crystallinity degree is considered. The results of this study provide important information about PLLA viscoelastic behaviour.
Internacional
Si
Nombre congreso
Macro2014
Tipo de participación
960
Lugar del congreso
Chiang Mai, Thailand
Revisores
Si
ISBN o ISSN
0000-0000
DOI
Fecha inicio congreso
06/07/2014
Fecha fin congreso
11/07/2014
Desde la página
318
Hasta la página
318
Título de las actas
Proceeding Macro2014
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: S.C. Cifuentes
  • Autor: E. Fruos
  • Autor: R. Benavente
  • Autor: J.L. González-Carrasco
  • Autor: Vicente Lorenzo Esteban (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Polímeros, Caracterización y Aplicaciones
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