부산대학교 도서관

The article demonstrates different particle size characteristics and molecular weight distributions in four commercially available bone cements. SmartSet GHV and Palacos R-40 contain large pre-polymerized polymethylmethacrylate (PMMA) beads, and Simplex P the finest beads. SmartSet GHV, Palacos R-40 and CMW1 have a similar narrow particle size distribution, and Simplex P has a broad particle distribution. The SmartSet GHV and Palacos R-40 have a higher molecular weight powders and cured cements than those of CMW1 and Simplex P powders; while CMW1 exhibited a higher molecular weight matrix. The polymerisation of the MMA liquid in CMW1 and Simplex P yielded a higher molecular weight matrix than PMMA beads. In contrast, reduced molecular weight was observed in the matrix of SmartSet GHV and Palacos R- 40 bone cements. The differences in particle size and molecular weight distributions may be one of the reasons for the different performance of the bone cements.