ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Bone cements incorporated with montmorillonite (MMT) were prepared in an attempt toimprove their mechanical properties. The cements were characterized using particle size analysis,gel permeation chromatography, viscosity measurements, X-ray diffraction, transmission electronmicroscopy, and mechanical properties. The average particle size and molecular weight of thePMMA powders used were 47 μm and 100,000 g/mol, respectively. The incorporation of MMT ledto an increase in viscosity of the bone cement but did not severely affect its setting temperature orthe amount of residual monomer. Regardless of the MMT mixing methods used, in this case MMTbeing mixing in liquid and powder components, sodium MMT (SMMT) was not well dispersed inthe bone cements, which was believed to be due to its hydrophilicity. Organophilic MMT (OMMT)was better dispersed in the liquid component than in the powder component. The tensile andcompressive strengths of the bone cements with 0.5 wt% OMMT mixed in the liquid componentwere 35.9 and 119.6 MPa, respectively, which were considerably higher than those of the bonecements with 0.5 wt% OMMT mixed in the powder component (27.9 and 100.5 MPa, respectively)
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.342-343.753.pdf
Permalink