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The shape of reprocessed waste plastic products. (a) Waste PLA blended with SiO2 [55]; (b) waste PLA blended with dopamine [56]; (c,d) recycling printing process of waste PC material and the energy consumption of waste PC compared with ABS [59]; (e) distribution of fillers inside PETG [57]; (f) on the left is the second printing of the commercial PETG filament, and the right side shows the second printing of the prepared PETG blended filament [57].
