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Optical microscopic images for post-consumer rPP loaded with styrene-butadiene-styrene/styrene-isoprene-styrene block-copolymers and glass bubbles: (a) rPP (scale bar 200 µm); (b) rPP/SBS (scale bar 130 µm); (c) RPP/SBS/GB 5 (scale bar 200 µm); (d) rPP/SBS/GB 20 (scale bar 100 µm); (e) rPP/SIS (scale bar 50 µm); (f) rPP/SIS/GB 5 (scale bar 100 µm); (g) rPP/SIS/GB 20 (scale bar 50 µm).
