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Title of Journal: Polym Bull

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Abbravation: Polymer Bulletin

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Springer Berlin Heidelberg

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DOI

10.1007/bf02486387

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ISSN

1436-2449

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Synthesis and characterization of pHsensitive sup

Authors: Mohammad Tally Yomen Atassi
Publish Date: 2016/03/23
Volume: 73, Issue: 11, Pages: 3183-3208
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Abstract

A novel porous superabsorbent polymer based on polyacrylic acidcoacrylamide grafted onto sodium alginate backbone was prepared under microwave irradiation Anionic surfactant sodium ndodecyl benzenesulfonate SDBS is used as a poreforming micelle templating FTIR spectroscopy confirmed the formation of the gel and removal of SDBS by washing The swelling behaviors in distilled water and in solutions with different pH values are investigated The results indicate that there is an optimized concentration of SDBS 192 mM where the swelling rate 6384 g g−1 min−1 and the swelling capacity 1078 g/g are maximal These results are also supported by scanning electron microscopy where the optimized hydrogel exhibits higher pore sizes and interconnected open cellular structure The optimized hydrogel is used as adsorbent for metal ion PbII Isotherm of adsorption and effect of pH adsorption dosage and recyclability are discussed The results show that maximum adsorption capacity of PbII on the hydrogel is 48077 mgg−1 and adsorption is well described by Langmuir isotherm model Adsorption capacity of the optimized hydrogel for other hazardous heavy metal ions CdII NiII and CuII and their competitive adsorption are also investigated

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