MECHANICAL-PROPERTIES OF A MODIFIED ACRYLIC BONE-CEMENT WITH ETOXYTRIETHYLENEGLYCOL MONOMETHACRYLATE

With the aim of improving some of the disadvantages of the acrylic bon e cements, an acrylic bone cement based on polymethyl methacrylate has been modified by substituting different quantities, up to 20%, of the monomer methyl methacrylate (MMA) with the same amount of ethoxytriet hyleneglycol monomethacrylate (TEG). The addition of this new monomer decreased noticeably the maximum temperature and increased both settin g and working times. Mechanical testing revealed that the introduction of TEG gave rise to a less fragile bone cement by increasing slightly the total deformation without any change in the rest of the tensile p arameters.