impact of prepolymerization monomer on polymerization of lldpe

Polyethylene, in fact, has the highest production volume among polyolefins. lightweight linear polyethylene resins, a category of polyethylenes, are considered as one of the main products in the world with a high annual production rate. one of the methods of synthesis of linear low-density polyethylene is the use of pre-polymerization method. in this research, propylene, 1-butene and ethylene were used as prepolymers at 35 ° c. also, various tests were performed to analyze the obtained polymers by pre-polymerization method. the results obtained in the melt flow index test showed that ethylene monomer had the lowest value. as a result, it had the highest molecular weight. the catalyst activity was increased as the propylene content in the sample increased.