Journal
CARBOHYDRATE POLYMERS
Volume 98, Issue 1, Pages 257-269Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2013.05.093
Keywords
IPN; Sodium alginate; Swelling and network parameters; Dye adsorption; Thermodynamics; Regeneration
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Funding
- Council of Scientific and Industrial Research (CSIR), Govt. of India
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Several interpenetrating network (IPN) hydrogels were made by free radical in situ crosslink copolymerization of acrylic acid (AA) and hydroxy ethyl methacrylate in aqueous solution of sodium alginate.N,N' -methylenebisacrylamide (MBA) was used as comonomer crosslinker for making these crosslink hydrogels. All of these hydrogels were characterized by carboxylic content, FTIR, SEM, XRD, DTA-TGA and mechanical properties. Swelling, diffusion and network parameters of the hydrogels were studied. These hydrogels were used for adsorption of two important synthetic dyes, i.e. Congo red and methyl violet from water. Isotherms, kinetics and thermodynamics of dye adsorption by these hydrogels were also studied. (C) 2013 Elsevier Ltd. All rights reserved.
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