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Three microparticle additives, tungsten (W), zirconium oxide (ZrO2), and barium sulfate (BaSO4) were selected to enhance the radio‐opacity in shape memory polymer (SMP) foam biomaterials. The addition of filler causes no significant alterations of glass transition temperatures, density of the materials increases, pore diameter decreases, and total volume recovery decreases from approximately 70 times...
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