The Effect of Pyrolysis Temperature and Time of Polypropylene on Quality of Carbon Nanotube with Flame Synthesis MethodPraswasti P.D.K Wulan, Juan Octavian Daniel Sidauruk and Juli Ayu NingtyasE3S Web Conf., 67 (2018) 03030DOI: https://doi.org/10.1051/e3sconf/20186703030