Two solution-based shape memory polymers (SMPs) were investigated that undergo 50-fold changes in their elastic moduli as these polyurethanes are heated above their respective glass transition temperatures (T-g) of 25 and 55 degrees C. Because biomedical implantations require transformation temperatures that are nominally 37 degrees C, such polymer solutions must be blended to achieve the correct T-g. After the temperature of solvent evaporation and the quantity of solvent present were measured by thermogravimetric analysis (TGA), a drop of each as-received solution and five blends were isothermally heated to +150 degrees C for 5 min using differential scanning calorimetry (DSC). Thereafter, the mean T(g)s were determined at the start, midpoint, and finish of the transition following two successive runs. Values of the complex modulus (E*) and loss tangent (tan delta) were measured for each blend at 1.1, 11, and 110 Hz from -20 to +100 degrees C by dynamic mechanical analysis (DMA). From the results we conclude that these SMPs do not deliver a reliable T-g in the temperature range of interest, a narrow temperature transformation, or an extended range of E* values. Consequently, these SMPs do not support our present biomedical implantations that require "elasticity memory".