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Polymerization of β‐cyclodextrin in the presence of bentonite clay to produce polymer nanocomposites for removal of heavy metals from drinking water
Author(s) -
Heydari Abolfazl,
Khoshnood Hamideh,
Sheibani Hassan,
Doostan Farideh
Publication year - 2017
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.3951
Subject(s) - thermogravimetric analysis , differential scanning calorimetry , thermal stability , materials science , nanocomposite , bentonite , polymer , nuclear chemistry , polymer clay , polymerization , emulsion polymerization , chemical engineering , polymer chemistry , chemistry , composite material , physics , engineering , thermodynamics
New hybrid organic–inorganic nanocomposites consist of β‐cyclodextrin (β‐CD)/epichlorohydrin (ECH), and bentonite clay were prepared by direct intercalation through one step emulsion polymerization. The structure and thermal stability of prepared nanocomposites were investigated by Fourier‐transform infrared spectroscopy (FT‐IR), X‐ray diffraction (XRD), field emission‐scanning electron microscopy (FE‐SEM), energy dispersive X‐ray analysis (EDAX), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), differential of differential scanning calorimetry (DDSC), thermogravimetric analysis (TGA) and differential thermogravimetric (DTG) analyses. The observed results show that the β‐CD polymer/clay nanocomposites (β‐CD–ECH polymer/clay) with higher thermal stability than β‐CD–ECH polymer were successfully prepared. The removal of heavy metals such as Cu(II), Zn(II) and Co(II) ions from drinking water was studied using a batch method at ambient temperature. The removal percentage and distribution coefficients (Kd) were determined for the adsorption system. It was found that the β‐CD–ECH polymer/clay nanocomposites showed higher removal capacity for Co 2+ , Cu 2+ and Zn 2+ ions in comparison with β‐CD–ECH polymer. The selectivity order could be given as Zn 2+ > Cu 2+ > Co 2+ . Copyright © 2016 John Wiley & Sons, Ltd.