Abstract
Poly (vinyl pyrrolidone) hydrogels with kappa-carrageenan (KC) were synthesized by γ-ray irradiation. The conditions of synthesis such as variation of total radiation doses and concentration of KC were determined. The properties of the prepared hydrogels, such as gel strength, gel fraction, swelling ratio, and water absorption were evaluated. Gel strength and gel fraction attain maximum up to a certain dose but swelling ratio and water absorption decrease with increased total doses. Gel strength, swelling ratio, and water absorption increase with an increase in the concentration of KC but the gel fraction reduces.
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