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Preparation and Characterization of Acrylic Bone Cement with Poly(methyl methacrylate)/Montmorillonte Nanocomposite Beads  

Lim Jin Sook (Laboratory of Industrial Pharmacy, College of Pharmacy, Chung-Nam National University)
Son Eun Hee (Laboratory of Industrial Pharmacy, College of Pharmacy, Chung-Nam National University)
Hwang Sung-Joo (Laboratory of Industrial Pharmacy, College of Pharmacy, Chung-Nam National University)
Kim Sung Soo (Laboratory of Industrial Pharmacy, College of Pharmacy, Chung-Nam National University)
Publication Information
Polymer(Korea) / v.29, no.4, 2005 , pp. 350-356 More about this Journal
Abstract
Poly(methyl methauylate)/montmorillonite nanocomposites were incorporated into acrylic bone cement in order to improve the mechanical properties and reduce the exotherm of acrylic bone cement. The nanocomposites were prepared using a suspension polymerization and characterized by scanning electron microscopy, X-ray diffraction, trans-mission electron microscopy, gel permeation chromatography, particle size analyzer and electron dispersive spectroscopy. The acrylic bone cements with poly (methyl methacrylate)/nanocomposite s were prepared and their thermal and mechanical properties were characterized. The prepared polymeric beads were composed of polymer-intercalated nanocomposites with partially exfoliated MMT layers, and the mean diameter of them was $50\~60$ fm with the spherical shape. The maximum setting temperature of the acrylic bone cements decreased from 98 to $81\~87^{circ}C$. The mechanical strengths and moduli of the acrylic bone cement with 0.1 $wt\%$ MMT were increased. compared to that without MMT. However, the mechanical properties were generally decreased with increasing incorporated MMT amounts. It is presumably due to the bubbles in nanocomposite beads generated during polymerization.
Keywords
acrylic bone cement; montmorillonite; nanocoinposite; poly(methyl methacrylate)/montmorillonite(MMT)nanocomposite;
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