Abstract
A modification of carrageenan with acrylamide has been successfully done using microwave-assisted grafting copolymeration method. The kappa-carrageenan-graft-acrylamide (κC-g-AAm) copolymer was synthesized using potassium persulfate (KPS) as initiator and varied microwave power. Copolymer with the optimum grafting percentage (%G) and intrinsic viscosity was obtained at 70% of microwave power under 20 s of exposure time. Characterization of copolymers for enhanced oil recovery application was done by dynamic viscosity and rheological measurement. The rheological measurement indicated that the copolymer showed relatively high resistance to temperature, shear rate, and salinity compared to commercial polymers. However, higher concentration of the copolymer is still needed to reach the same viscosity as the commercial polymers.
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