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14This work is dedicated to the synthesis of carbon nanotube from pyrolysis gases obtained by plastics. Virgin and 15 waste plastics (polyethylene, polypropylene, polystyrene, polyamide, polyvinyl-chloride, municipal plastic waste) 16were used as raw materials and fed into a horizontal tubular reactor and pyrolyzed without catalyst at 560-570°C. 17Raw materials could be transformed into 14-32% gases and 15-44% pyrolysis oils, depending on the type of raw 18 materials. Pyrolysis of municipal plastic waste produced the highest gas yield, while pyrolysis of virgin 22were used. Both gaseous and oil products of pyrolysis were investigated by gas-chromatography. The produced 23CNTs were added as reinforcement into a commercial low density polyethylene matrix using heated two roll mill 24 and then specimens for testing were manufactured. Especially the reinforcing effects of carbon nanotube were 25 investigated through the measuring of tensile and Charpy impact properties of the CNTs-LDPE polymers.

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