Krishnan Mohan Raj, Alsharaeh Edreese Housni
College of Science and General Studies, AlFaisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia.
Polymers (Basel). 2025 Jan 5;17(1):116. doi: 10.3390/polym17010116.
Herein, we report the methodological impact on the curing kinetics of bone cement based on polymer nanocomposites prepared using different methods. Poly (styrene--methylmethacrylate)-2D nanofiller nanocomposites (P(S-MMA)-2D Nanofiller) were prepared using bulk and suspension polymerization methods to study the effect of the different methods. The prepared nanocomposites were well-characterized for chemical, thermal, mechanical, and structural characteristics using Fourier Transform Infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), nano-indentation, and scanning electron microscopy (SEM) techniques, respectively. The FT-IR results confirmed the successful formation of the polymer nanocomposites. The DSC results showed that the prepared nanocomposites have higher thermal stabilities than their copolymer counterparts. The nano-indentation results revealed that the elastic modulus of the copolymer nanocomposites (bulk polymerization) was as high as 7.89 GPa, and the hardness was 0.219 GPa. Incorporating the 2D nanofiller in the copolymer matrix synergistically enhances the thermo-mechanical properties of the bone cement samples. The polymer nanocomposites prepared using the suspension polymerization method exhibit faster-curing kinetics (15 min) than those prepared using the bulk polymerization (120-240 min) method.
在此，我们报告了使用不同方法制备的基于聚合物纳米复合材料的骨水泥固化动力学的方法学影响。采用本体聚合和悬浮聚合方法制备了聚（苯乙烯-甲基丙烯酸甲酯）-二维纳米填料纳米复合材料（P（S-MMA）-二维纳米填料），以研究不同方法的影响。分别使用傅里叶变换红外光谱（FT-IR）、差示扫描量热法（DSC）、纳米压痕和扫描电子显微镜（SEM）技术对制备的纳米复合材料的化学、热、机械和结构特性进行了充分表征。FT-IR结果证实了聚合物纳米复合材料的成功形成。DSC结果表明，制备的纳米复合材料比其共聚物对应物具有更高的热稳定性。纳米压痕结果显示，共聚物纳米复合材料（本体聚合）的弹性模量高达7.89 GPa，硬度为0.219 GPa。在共聚物基体中加入二维纳米填料协同增强了骨水泥样品的热机械性能。采用悬浮聚合法制备的聚合物纳米复合材料比采用本体聚合法（120-240分钟）制备的聚合物纳米复合材料表现出更快的固化动力学（15分钟）。
