Farrar D F, Rose J
Smith and Nephew Group Research Centre, York Science Park, Heslington, UK.
Biomaterials. 2001 Nov;22(22):3005-13. doi: 10.1016/s0142-9612(01)00047-3.
The rheological behaviour of poly(methyl methacrylate) bone cements has been characterised during the curing phase using an oscillating parallel plate rheometer. Viscosity has been measured as a function of time for a range of commercial cements showing different viscosity-time profiles. Measurements have been made over a range of temperatures from 19-25 degrees C, and the results show a strong dependence of rate of viscosity rise on temperature. Viscoelastic parameters, such as storage modulus, loss modulus and phase angle have been obtained and show the change from primarily viscous to elastic behaviour as the cements set. It is suggested that these parameters more completely describe the rheological behaviour of bone cements than viscosity alone and may provide a better measure of handling and setting characteristics.
使用振荡平行板流变仪对聚甲基丙烯酸甲酯骨水泥在固化阶段的流变行为进行了表征。对于一系列呈现不同粘度-时间曲线的市售骨水泥，测量了粘度随时间的变化。在19至25摄氏度的温度范围内进行了测量，结果表明粘度上升速率强烈依赖于温度。已获得粘弹性参数，如储能模量、损耗模量和相角，这些参数表明随着骨水泥凝固，其行为从主要的粘性转变为弹性。有人认为，这些参数比单独的粘度更能全面地描述骨水泥的流变行为，并且可能为操作和凝固特性提供更好的测量方法。
