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The effect of adding 10% of barium sulphate radiopacifier on the mechanical behaviour of acrylic bone cement
Author(s) -
BALEANI M.,
VICECONTI M.
Publication year - 2011
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.2010.01535.x
Subject(s) - materials science , cement , fracture toughness , composite material , bone cement , barium , toughness , barium sulphate , fracture (geology) , matrix (chemical analysis) , metallurgy , chemistry , radiochemistry
Barium sulphate (BaSO 4 ) is commonly used in bone cement as a radiopacifier. The addition of the BaSO 4 to the polymeric matrix may cause a decrease in the mechanical properties of the cement. In this work, the effect of adding 10%w/w BaSO 4 to a plain polymethylmethacrylate based bone cement was evaluated in terms of endurance limit, fatigue crack propagation and fracture toughness. A lower endurance limit (−13%), as well as a lower fracture toughness (−13%), was found for the radiopaque bone cement in comparison with the plain formulation. Conversely, a substantial decrease (66%) in the crack growth rate was found due to the radiopacifier addition. These are all effects that reflect the weakening of the polymeric matrix, caused by the addition of the radiopacifier.