Resumo em Inglês:

Abstract Hydrophobically modified polyacrylamides (HMPAMs) are synthesized by incorporating styrene, a hydrophobic monomer, to address the limitations of conventional polyacrylamide (PAM) and partially hydrolyzed polyacrylamide (HPAM). These limitations, which reduce the effectiveness of polymer flooding for enhanced oil recovery, include poor shear resistance, sensitivity to salinity, chemical degradation such as polymer chain scission, and hydrolysis of acrylamide groups. In this study, the HMPAM samples are characterized using thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and oscillatory strain measurements. The results indicate that HMPAM containing a higher concentration of hydrophobic monomer (1.5 mol%) demonstrates improved shear resistance and greater thermal stability.