INVESTIGADORES
FRONTINI patricia Maria
artículos
Título:
Mechanical and Fracture Behaviour Evaluation of Commercial Acrylic Bone Cements
Autor/es:
CLAUDIA I. VALLO; TERESITA R. CUADRADO ; PATRICIA M. FRONTINI
Revista:
POLYMER INTERNATIONAL
Editorial:
JOHN WILEY & SONS LTD
Referencias:
Lugar: LOndres ; Año: 1997 p. 260 - 268
ISSN:
0959-8103
Resumen:
The deformation and fracture behaviour of some commercial acrylicbone cements have been investigated. Cements were characterized by gel permeationchromatography, dynamic mechanical analysis and scanning electronmicroscopy. The inÑuence of liquid to powder ratio, curing temperature, strainrate and non-reacted monomer was analysed for one radiolucent cement. Resultsshowed that the b transition activation process inÑuences both deformation andfracture behaviour. Fracture surface stress whiteness revealed the presence ofcrazes as the main plastic deformation mechanism. Non-reacted monomer actedas a plasticizer leading to materials with lower yield strength, py that induces ,crack tip blunting and improves toughness. It appears that the presence of radiopaciÐerÐllers also improves fracture toughness
