ABSTRACT
This study was conducted in the Khartoum refinery in Algylee to study the properties of polypropylene (grade 113 &114) which are produced by the addition technique; they used refined propylene from Liquefied Petroleum Gas and Ziegler-Natta catalyst. The samples were taken from samples which are produced in (1-15)/08/2010 in three features (powder, granulates, and specimens). Both grades are homopolymer and isotactic polypropylene. They checked the component of liquefied petroleum gas by using a gas chromatography instrument and determination of thermal, mechanical, and physical properties. From the result, both grades differed in their properties according to molecular weight. Grade 113 has a large molecular weight which is suitable for the extrusion process while grade 114 has a small molecular weight which is suitable for the injection molding process. Each grade of polypropylene is within the standard range but they contain a slight amount (˂0.5ppm) of sulfur and moisture (49.1ppm) which are affecting product quality. However, if there is no separation unit the product will become yellowish and toxic.
Keywords: Refined propylene, Polypropylene, Ziegler-Natta catalyst, Liquefied petroleum gases, and KPC.
Citation: Elrazeg YA, Kabir MR, Haque MZ, and Ahmed SI. (2022). Study of properties of local polypropylene compared to international standard properties, Int. J. Mat. Math. Sci., 4(4), 94-101.
https://doi.org/10.34104/ijmms.022.0940101