Abstract: A hydrophobically modified copolymer nanostructure includes a first monomer and a second monomer. The first monomer is a hydrophilic monomer. The second monomer is a non-ionic short-chain hydrophobic monomer. The first monomer and the second monomer form a microblock structure, forming nanoparticles. The microblock structure is the hydrophobically modified copolymer nanostructure.

Abstract: Design and preparation of a smart system, including a hydrophilic polymer nanoparticle as a core material and a hydrophilic-hydrophobic block copolymer as a coating nanolayer for use in a smart core-shell nanostructure flooding during enhanced oil recovery (EOR) process. The hydrophilic polymers are prepared by an inverse emulsion method. The central core of this nanostructure includes hydrophilic polymer. The nanolayer can be a surfmer. The binary properties of the shell and hydrophilic polymers increase the water viscosity in the water-oil interface and enhance oil recovery.

Abstract: A hydrophobically modified copolymer nanostructure includes a first monomer and a second monomer. The first monomer is a hydrophilic monomer. The second monomer is a non-ionic short-chain hydrophobic monomer. The first monomer and the second monomer form a microblock structure, forming nanoparticles. The microblock structure is the hydrophobically modified copolymer nanostructure.

Abstract: A hydrophobically modified copolymer nanostructure includes a first monomer and a second monomer. The first monomer is a hydrophilic monomer. The second monomer is a non-ionic short-chain hydrophobic monomer. The first monomer and the second monomer form a microblock structure, forming nanoparticles. The microblock structure is the hydrophobically modified copolymer nanostructure.

Abstract: Hydrophilic polymer particles have been obtained using polyacrylamide, xanthane, maleic anhydride polymers, allylamine, ethyleneimine, and oxazoline as core polymers. Then, hydrophobic polymers shells have been produced on the core-side using styrene, styrene copolymers, polyvinyl state, polysolfune, polymethyl methacrylate, and polycyclohxyl methacrylate by in-situ polymerization of monomer as method one and inverse emulsion process as method two. These particles can release hydrophilic polymers at oil-water interface at the reservoir temperature where the water flooding should have the maximum viscosity. So, active materials cause to decrease the mobility ratio of water to oil in the reservoirs and on the other hand, plug the swept porosities and prevent to act the water fingering process.