Enhanced oil recovery performance and time-dependent role of polymeric core-shell nanoemulsion

Nano inverse emulsion polymerization has been used to synthesize highmolecular weight polyacrylamide nanoparticles with a hydrophobic nanoscale coatinglayer with low molecular weight. these core-shell nanoparticles modify the polymerooding process, which can eliminate almost all problems of classical polymer oodingsuch as polymer solution high viscosity, polymer absorption and mechanical, thermaland biological degradations of the polymer. the nanostructure was characterized bydynamic light scattering (dls) particle size analysis, thermal analysis (dsc), and uvvisspectroscopy that conrm a core-shell nanostructure for the produced particles withconsiderable interaction of two polymers with narrow size distribution (90-140 nm). also,micromodel and solubility experiments show that this method could considerably enhancethe performance of classical polymer ooding and reduce polymer usage during the polymerooding process.