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Scanning electron micrographs of recycled fibers melted at 270 °C 10,000 rpm (A) 50/50 wt % polypropylene/polystyrene; (B) 50/50 wt % polypropylene/polyethylene terephthalate; (C) 50/50 wt % polystyrene/polyethylene terephthalate; (D) 33/33/33 wt % polystyrene/polypropylene/polyethylene terephthalate. Scale bar denotes 100 µm.
