Novel Biodegradable Graft-Modified Water-Soluble Copolymer Using Acrylamide and Konjac Glucomannan for Enhanced Oil Recovery

Synthesis of a novel biodegradable hydrosoluble graft-copolymer named KGM-g-AM-g-AA-g-APEG was carried out using konjac glucomannan, acrylamide, acrylic acid, and allyl polyoxyethylene ether via free-radical copolymerization. Effective characterization methods , including XRD, TGA, FT-IR, 1H NMR, and SEM, were adopted to evaluate the graft-copolymer. The good biodegradability of the graft-copolymer was confirmed, with a degradation rate >60% in...