Green Composites Based on PLA and Agricultural or Marine Waste Prepared by FDM

Polymers

Marco Morreale¹  Giuseppe Alaimo²  Andrea Maio²  Roberto Scaffaro²  EmmanuelFortunato Gulino² 

[1] Faculty of Engineering and Architecture, Kore University of Enna, Cittadella Universitaria, 94100 Enna, Italy;Research Unit INSTM, Department of Engineering, University of Palermo, Viale delle Scienze, 90128 Palermo, Italy;

关键词: Posidonia oceanica;    Opuntia ficus indica;    polylactic acid;    additive manufacturing;    3D printing;    aspect ratio;   

DOI  :  10.3390/polym13091361

来源: DOAJ

【 摘 要 】

Three dimensional-printability of green composites is recently growing in importance and interest, especially in the view of feasibility to valorize agricultural and marine waste to attain green fillers capable of reducing bioplastic costs, without compromising their processability and performance from an environmental and mechanical standpoint. In this work, two lignocellulosic fillers, obtained from Opuntia ficus indica and Posidonia oceanica, were added to PLA and processed by FDM. Among the 3D printed biocomposites investigated, slight differences could be found in terms of PLA molecular weight and filler aspect ratio. It was shown that it is possible to replace up to 20% of bioplastic with low cost and ecofriendly natural fillers, without significantly modifying the processability and the mechanical performance of the neat matrix; at the same time, an increase of surface hydrophilicity was found, with possible positive influence on the biodegradability of such materials after disposal.

【 授权许可】

Unknown