چكيده به لاتين
Oxidation desulphurisation is one of the most useful ways to remove deep aromatic sulfur compounds in diesel fuel. One of the disadvantages of this method is the sulfonated compounds remaining at the end of the desulphurisation process. Therefore, the study of the potential potentials of these compounds for the use of these compounds is the aim of this study. Several applications of sulfonated compounds have been studied. Considering the economics and applicability of polymer production as well as the effect on removal of the extraction process at the end of the oxidation desulphurisation process, the polymerization of these compounds was studied. Due to the behavioral and structural similarity of the monomer produced from the sulfonated compounds to the monomer used in the synthesis of polysulfone, this process was used to synthesize the polymer. Condensation synthesis using buphenyl monomer (BPA) and monomer di-bromo-di-benzinothiophen sulfone (DBrDBTS), the presence of two bi-protone and polar solvents including dimethyl sulfoxide (DMSO) and dimethyl acetamide (DMAC) in the presence of potassium bicarbonate Under the circumstances of the presence of a neutral gas. The synthesis results showed that DMSO solvent has a better performance in terms of synthesis rate and polymer production with desirable properties. DSC, TGA, FTIR and GPC tests were used to determine the characteristics of the produced polymers. The optimum production polymer, after several experiments, has a glass transition temperature of 442.92 degrees Celsius with a melting temperature of 1350 degrees Celsius and a degradation temperature of about 65 percent at 1300 degrees Celsius. Investigating and analyzing the experiments showed that the exact temperature setting in the range of 165-160 ° C (preventing severe temperature gradient in the reaction system) as well as the proper mechanical fusion system is essential for successful polymerization. It is also necessary that the final neutralization and final polymerization steps are carried out to ensure the final purity of the polymer.
Keywords: Sulfonated compounds, Polymerization, Polysulfone, Dibromo-Dibenzothiophen-sulfone, Dibenzothiophene-Sulfone
