Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10604610 | Carbohydrate Polymers | 2011 | 7 Pages |
Abstract
The present paper reports the modification of alginate through the grafting of 2-acrylamidoglycolic acid by free radical polymerization using an efficient potassium peroxydiphosphate/silver nitrate redox system in an inert atmosphere. The reaction conditions for maximum grafting have been optimized by varying the reaction variables including the concentration of 2-acrylamidoglycolic acid (2.0 Ã 10â2-7.3 Ã 10â2 mol dmâ3), potassium peroxydiphosphate (0.4 Ã 10â2-2.0 Ã 10â2 mol dmâ3), silver nitrate (1.2 Ã 10â3-4.4 Ã 10â3 mol dmâ3), sulphuric acid (1.0 Ã 10â3-8 Ã 10â3 mol dmâ3), alginate (0.4-1.8 g dmâ3) along with time duration (60-180 min) and temperature (30-50 °C). Water swelling capacity, metal ion sorption, flocculation and resistance to biodegradability studies of synthesized graft copolymer have been performed with respect to the parent polymer. The graft copolymer has been characterized by Fourier transform infrared spectroscopy and thermogravimetric analysis.
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Mithilesh Yadav, Dinesh Kumar Mishra, Arpit Sand, Kunj Behari,