title: Synthesis, characterization, swelling and dye adsorption properties of starch incorporated acrylic gels.
abstract: Several hydrogels were prepared by a free radical polymerization of acrylic acid (AA), sodium acrylate (SA) and AA/hydroxy ethyl methacrylate (HEMA) in the presence of starch in water. These starch incorporated acrylic gels were prepared by varying the concentration of the initiator, monomer, crosslinker and the starch. The resulting gels were characterized by FTIR, SEM, XRD, DTA-TGA, pH at point zero charge (PZC), swelling and the diffusion in water. The gels showed high adsorption and removal% of Safranine T (ST) and Brilliant Cresyl Blue (BCB) dyes from water. The swelling and the adsorption data were fitted to different kinetic models and isotherms. Amongst the three kinds of gels, the starch incorporated sodium polyacrylate gel showed the highest adsorption of 9.7-85.3mg/L (97-61% removal) of BCB dye and 9.1-83mg/L (91-60% removal) of ST dye for a feed dye concentration of 10-140mg/L.
authors: Department of Chemistry, Bijoy Krishna Girls' College, Howrah, India.
authors: Bidyadhar
authors: B
authors: Mandal
authors: Department of Polymer Science and Technology, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India. Electronic address: samitcu2@yahoo.co.in.
authors: Samit Kumar
authors: SK
authors: Ray
mesh_terms: D000180:Acrylic Resins / Q000138:chemical synthesis* / Q000737:chemistry*; D000327:Adsorption; D004396:Coloring Agents / Q000302:isolation & purification*; D003432:Cross-Linking Reagents / Q000737:chemistry; D004055:Differential Thermal Analysis; D004058:Diffusion; D020100:Hydrogels / Q000138:chemical synthesis / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008962:Models, Theoretical; D010078:Oxazines / Q000302:isolation & purification*; D010619:Phenazines / Q000302:isolation & purification*; D012996:Solutions; D017550:Spectroscopy, Fourier Transform Infrared; D013213:Starch / Q000737:chemistry*; D013816:Thermodynamics; D013818:Thermogravimetry; D013997:Time Factors; D014961:X-Ray Diffraction
chemical_list: D000180:Acrylic Resins; D004396:Coloring Agents; D003432:Cross-Linking Reagents; D020100:Hydrogels; D010078:Oxazines; D010619:Phenazines; D012996:Solutions; C006797:Brilliant Cresyl Blue; C006903:carbopol 940; D013213:Starch; C009195:safranine T
keywords: Characterization; Hydrogel; Synthesis