title: Graft copolymer based on (sodium alginate-g-acrylamide): Characterization and study of Water swelling capacity, metal ion sorption, flocculation and resistance to biodegradability.
abstract: Graft copolymer of alginate and acrylamide was synthesized by grafting acrylamide chains on to alginate by free radical polymerization using potassium bromate/thiourea redox system in an inert atmosphere. The reaction conditions for maximum grafting have been optimized by varying the reaction variables, including the concentration of acrylamide (3.0×10(2)-9.3×10(2)moldm(-3)), potassium bromate (8×10(-3)-16×10(-3)moldm(-3)), thiourea (1.6×10(-3)-4.8×10(-3)moldm(-3)), sulphuric acid (3.0×10(-3)-7×10(-3)moldm(-3)), alginate (0.6-1.6gdm(-3)) along with time duration (60-180min) 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 grafted polymers were characterized by FTIR spectroscopy and thermo gravimetric analysis.
authors.affiliation: Department of Chemistry, Manav Rachna University, Faridabad, India. Electronic address: sand.arpit@gmail.com.
authors.forename: Arpit
authors.initials: A
authors.lastname: Sand
authors.affiliation: Department of Mathematics, Manav Rachna University, Faridabad, India.
authors.forename: Aparna
authors.initials: A
authors.lastname: Vyas
authors.affiliation: Department of Chemistry, Manav Rachna University, Faridabad, India.
authors.forename: A K
authors.initials: AK
authors.lastname: Gupta
mesh_terms: D020106:Acrylamide / Q000737:chemistry*; D000327:Adsorption; D000464:Alginates / Q000737:chemistry*; D001673:Biodegradation, Environmental; D001959:Bromates / Q000032:analysis; D005427:Flocculation; D020723:Glucuronic Acid / Q000737:chemistry; D006603:Hexuronic Acids / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007477:Ions; D008670:Metals / Q000302:isolation & purification*; D011108:Polymers / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D013818:Thermogravimetry; D013890:Thiourea / Q000032:analysis; D013997:Time Factors; D014867:Water / Q000737:chemistry*
chemical_list: D000464:Alginates; D001959:Bromates; D006603:Hexuronic Acids; D007477:Ions; D008670:Metals; D011108:Polymers; D014867:Water; D020106:Acrylamide; D020723:Glucuronic Acid; D013890:Thiourea
keywords: Acrylamide; Graft copolymer; Potassium bromate; Sodium alginate; Thiourea