The hybrid hydrogel materials meet important social challenges, including the photocatalytic purification of water and bio-medical applications. Here, we demonstrate two scenarios polyacrylamide-TiO2 (PAAm@TiO2) composite design using calcium alginate (Alg-Ca) or Keplerate-type polyoxometalates (POMs) {Mo132} tuning polymer network structure. Calcium molding allowed us to produce polyacrylamide...

Adding polymers to the injection water in water-flooding oil recovery increases viscosity and thereby enhances factor. However, beneficial effects are often counteracted by adsorption of polymer ambient mineral surface. In here, we used Quartz Crystal Microbalance with Dissipation (QCM-D) measurements study frequently hydrolyzed polyacrylamide (HPAM), a weak polyelectrolyte, silica alumina mode...

in this paper, polyacrylamide/chromium acetate gel polymer system was prepared as water shut-off system to control water production in one of the iranian oil reservoirs condition. effect of various parameters such as temperature (90 °c) and water formation from view point of salinity and divalent cations, was evaluated on the gelation kinetic and gel strength using bottle testing method. the re...

In this paper, polyacrylamide/chromium acetate gel polymer system was prepared as water shut-off system to control water production in one of the Iranian oil reservoirs condition. Effect of various parameters such as temperature (90 °C) and water formation from view point of salinity and divalent cations, was evaluated on the gelation kinetic and gel strength using bottle testing method. Th...