Mistretta Maria Chiara, Botta Luigi, Morreale Marco, Rifici Sebastiano, Ceraulo Manuela, La Mantia Francesco Paolo
Department of Civil, Environmental, Aerospace, Materials Engineering, RU INSTM of Palermo, University of Palermo, Viale delle Scienze ed.6, 90128 Palermo, Italy.
Faculty of Engineering and Architecture, Kore University of Enna, Viale delle Olimpiadi, 94100 Enna, Italy.
Materials (Basel). 2018 Apr 17;11(4):613. doi: 10.3390/ma11040613.
The use of biodegradable/bio-based polymers is of great importance in addressing several issues related to environmental protection, public health, and new, stricter legislation. Yet some applications require improved properties (such as barrier or mechanical properties), suggesting the use of nanosized fillers in order to obtain bio-based polymer nanocomposites. In this work, bionanocomposites based on two different biodegradable polymers (coming from the Bioflex and MaterBi families) and two different nanosized fillers (organo-modified clay and hydrophobic-coated precipitated calcium carbonate) were prepared and compared with traditional nanocomposites with high-density polyethylene (HDPE) as matrix. In particular, the injection molding processability, as well as the mechanical and rheological properties of the so-obtained bionanocomposites were investigated. It was found that the processability of the two biodegradable polymers and the related nanocomposites can be compared to that of the HDPE-based systems and that, in general, the bio-based systems can be taken into account as suitable alternatives.
使用可生物降解/生物基聚合物对于解决与环境保护、公众健康以及新的更严格法规相关的若干问题至关重要。然而，一些应用需要改进的性能（如阻隔性能或机械性能），这表明使用纳米尺寸的填料以获得生物基聚合物纳米复合材料。在这项工作中，制备了基于两种不同可生物降解聚合物（来自Bioflex和MaterBi家族）和两种不同纳米尺寸填料（有机改性粘土和疏水包覆沉淀碳酸钙）的生物纳米复合材料，并与以高密度聚乙烯（HDPE）为基体的传统纳米复合材料进行了比较。特别地，研究了如此制得的生物纳米复合材料的注塑成型加工性能以及机械和流变性能。结果发现，两种可生物降解聚合物及其相关纳米复合材料的加工性能可与基于HDPE的体系相媲美，并且总体而言，生物基体系可被视为合适的替代品。
