Bakhsh Ahmed A
Department of Industrial Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
Polymers (Basel). 2023 Mar 17;15(6):1505. doi: 10.3390/polym15061505.
As a means of introducing environmental responsibility to industrial applications, the usage of biobased composite materials has been encouraged in recent years. Polymer nanocomposites utilize polyolefins increasingly as a matrix, owing to the diversity in their features and prospective applications, even though typical polyester blend materials, such as glass and composite materials, have garnered greater attention from researchers. The mineral hydroxy-apatite, or Ca(PO)(OH), is the primary structural component of bone and tooth enamel. Increased bone density and strength result from this procedure. As a result, nanohms are fabricated from eggshells into rods with very tiny particle sizes. Although there have been many papers written on the benefits of HA-loaded polyolefins, the reinforcing effect of HA at low loadings has not yet been taken into account. The purpose of this work was to examine the mechanical and thermal characteristics of polyolefin-HA nanocomposites. These nanocomposites were built out of HDPE and LDPE (LDPE). As an extension of this work, we investigated what would happen when HA is added to LDPE composites at concentrations as high as 40% by weight. Carbonaceous fillers, including graphene, carbon nanotubes, carbon fibers, and exfoliated graphite, all play significant roles in nanotechnology owing to the extraordinary enhancements in their thermal, electrical, mechanical, and chemical properties. The purpose of this study was to examine the effects of adding a layered filler, such as exfoliated graphite (EG), to microwave zones that might have real-world applications for their mechanical, thermal, and electrical characteristics. Mechanical and thermal properties were significantly enhanced by the incorporation of HA, notwithstanding a minor decrease in these attributes at a loading of 40% HA by weight. A higher load-bearing capability of LLDPE matrices suggests their potential usage in biological contexts.
作为将环境责任引入工业应用的一种手段，近年来生物基复合材料的使用受到了鼓励。聚合物纳米复合材料越来越多地使用聚烯烃作为基体，这是由于其特性和潜在应用的多样性，尽管典型的聚酯共混材料，如玻璃和复合材料，已经引起了研究人员更多的关注。矿物羟基磷灰石，即Ca(PO)(OH)，是骨骼和牙釉质的主要结构成分。这个过程会导致骨密度和强度增加。因此，纳米羟基磷灰石由蛋壳制成粒径非常小的棒状。尽管已经有许多关于负载羟基磷灰石的聚烯烃的益处的论文，但低负载量下羟基磷灰石的增强效果尚未得到考虑。这项工作的目的是研究聚烯烃 - 羟基磷灰石纳米复合材料的力学和热性能。这些纳米复合材料由高密度聚乙烯（HDPE）和低密度聚乙烯（LDPE）制成。作为这项工作的延伸，我们研究了在低密度聚乙烯复合材料中添加高达40%重量比的羟基磷灰石时会发生什么。含碳填料，包括石墨烯、碳纳米管、碳纤维和膨胀石墨，由于其热、电、机械和化学性能的非凡增强，在纳米技术中都发挥着重要作用。本研究的目的是研究添加层状填料，如膨胀石墨（EG），对可能具有实际应用的微波区域的力学、热学和电学特性的影响。尽管在40%重量比的羟基磷灰石负载量下这些属性略有下降，但加入羟基磷灰石后力学和热性能得到了显著增强。线性低密度聚乙烯基体更高的承载能力表明它们在生物环境中的潜在用途。
