Synthesis and Characterization of Acrylic Acid-g-(κ-Carrageenan) Copolymer and Study of Its Application

[摘要] The effects of concentrations of peroxymonosulphate, mercaptosuccinic acid, hydrogen ion, acrylic acid, and carrageenan on grafting parameters were studied to find out the maximum grafting ratio. The corresponding values were found to be14.0×10-3,32×10-3,15.0×10-3,18.0×10-2 mol dm−3, and1.0×10-2 g dm−3, respectively. The optimal reaction time duration and reaction temperature were found to be 120 min and 40°C, respectively. The effect of hydrogen ion variation from 5.0 up to25.0×10-4 mol dm−3shows prompt changes on grafting parameter. The grafted copolymer was found more thermally stable than the ungrafted substrate. Also the grafted copolymer absorbed more water, namely hazardous metal cations. Hg2+, Pb2+, and Cd2+, showed better flocculation behavior than carrageenan.

[学科分类] 有机化学