Hydrophobic Modification of Polyacrylamides with Oligo(Lactide): A Comparative Study in Two Solvent Systems.

ABSTRACT: The control and modification of polyacrylamide viscosity through the incorporation of hydrophobic monomers have gained considerable attention due to their cost-effectiveness and potential use in enhanced oil recovery. Hydrophobically modified polyacrylamide copolymers containing oligo-(lactide) macromonomers were synthesized by free radical polymerization in two solvent mixtures: methanol/water and tetrahydrofuran/water. A macromonomer with five repeating units was incorporated at 2, 5, and 10 mol %, as determined by proton nuclear magnetic resonance. Copolymers obtained in tetrahydrofuran/water showed higher incorporation efficiency but lower molar mass than those synthesized in methanol/water, according to size-exclusion chromatography. The latter presented better rheological performance

SUBMITTER: Rabaioli LR 

PROVIDER: S-EPMC12809852 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature