title: Polyacrylamide grafted Agar: synthesis and applications of conventional and microwave assisted technique.
abstract: Polyacrylamide grafted Agar (Ag-g-PAM) has been successfully synthesized by conventional method and microwave assisted method. The former method employs ceric ammonium nitrate (CAN) as the free radical initiator while the latter uses the combination of ceric ammonium nitrate (CAN) and microwave irradiation. The synthesized graft copolymers have been characterized by elemental analysis (C, H, N, O and S), FTIR spectroscopy, intrinsic viscosity measurement and scanning electron micrograph (SEM); taking agar as a reference. Flocculation efficacy of synthesized graft copolymers was studied in kaolin suspension and in waste water through 'Jar test' procedure. In the present investigation, we have observed that polyacrylamide grafted agar synthesized by microwave assisted technique shows superior properties than conventional technique. These properties are reported in terms of intrinsic viscosity, flocculation efficacy and pollutant load reduction of waste water.
authors: Department of Applied Chemistry, Birla Institute of Technology, Mesra, Ranchi 835215, Jharkhand, India.
authors: G Usha
authors: GU
authors: Rani
authors: Sumit
authors: S
authors: Mishra
authors: Gautam
authors: G
authors: Sen
authors: Usha
authors: U
authors: Jha
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry* / Q000493:pharmacokinetics / Q000494:pharmacology; D000362:Agar / Q000737:chemistry* / Q000378:metabolism / Q000494:pharmacology; D001709:Biotechnology / Q000379:methods*; D002947:Cities; D005427:Flocculation; D006801:Humans; D008855:Microscopy, Electron, Scanning; D008872:Microwaves; D008954:Models, Biological; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D017550:Spectroscopy, Fourier Transform Infrared; D014865:Waste Disposal, Fluid / Q000379:methods; D018508:Water Purification / Q000379:methods; D000099166:Polyacrylamides
chemical_list: D000180:Acrylic Resins; D000362:Agar; D011108:Polymers; D000099166:Polyacrylamides