Improving bone cement toughness and contrast agent confinement by using acrylic branched polymers
- Lissarrague, Maria Haydee
- Fascio, Mirta Liliana
- Goyanes, Silvia Nair
- D'accorso, Norma Beatriz
DOIAbstract
A new biomedical material to be used as part of acrylic bone cement formulations is described. This new material is tough, its Young's Modulus is similar to the one of poly (methylmethacrylate) and the contrast agent, usually employed in acrylic bone cements, is homogeneously distributed among the polymeric matrix. Additionally, its wear coefficient is 66% lower than the one measured in poly(methyl methacrylate). The developed material is a branched polymer with polyisoprene backbone and poly(methyl methacrylate) side chains, which are capable of retaining barium sulphate nanoparticles thus avoiding their aggregation. The grafting reaction was carried out in presence of the nanoparticles, using methyl methacrylate as solvent. From the 1H-NM...
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