Gigante Vito, Aliotta Laura, Canesi Ilaria, Sandroni Marco, Lazzeri Andrea, Coltelli Maria-Beatrice, Cinelli Patrizia
Department of Civil and Industrial Engineering, University of Pisa, 56122 Pisa, Italy.
INSTM-Inter University Consortium of Material Science and Technology, 50121 Firenze, Italy.
Polymers (Basel). 2022 Aug 19;14(16):3389. doi: 10.3390/polym14163389.
The present work aims to enhance the use of agricultural byproducts for the production of bio-composites by melt extrusion. It is well known that in the production of such bio-composites, the weak point is the filler-matrix interface, for this reason the adhesion between a polylactic acid (PLA)/poly(butylene succinate)(PBSA) blend and rice and wheat bran platelets was enhanced by a treatment method applied on the fillers using a suitable beeswax. Moreover, the coupling action of beeswax and inorganic fillers (such as talc and calcium carbonate) were investigated to improve the thermo-mechanical properties of the final composites. Through rheological (MFI), morphological (SEM), thermal (TGA, DSC), mechanical (Tensile, Impact), thermomechanical (HDT) characterizations and the application of analytical models, the optimum among the tested formulations was then selected.
本研究旨在通过熔融挤出提高农业副产品在生物复合材料生产中的应用。众所周知，在这种生物复合材料的生产中，薄弱环节是填料与基体的界面，因此，通过使用合适的蜂蜡对填料进行处理，增强了聚乳酸（PLA）/聚丁二酸丁二醇酯（PBSA）共混物与米糠和麦麸薄片之间的粘附力。此外，还研究了蜂蜡与无机填料（如滑石粉和碳酸钙）的偶联作用，以改善最终复合材料的热机械性能。通过流变学（MFI）、形态学（SEM）、热学（TGA、DSC）、力学（拉伸、冲击）、热机械（HDT）表征以及分析模型的应用，然后从测试配方中选择了最佳配方。
