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Interactions of bentonite clay in composite gels of non-ionic polymers with cationic surfactants and heavy metal ions

  • Chemically cross-linked composite gels based on bentonite clay from Manyrak deposit (Kazakhstan Republic) and nonionic polymers, i.e., poly(hydroxyethylacrylate) and poly(acrylamide), were polymerized in situ after preliminary intercalation of monomers in an aqueous suspension of bentonite clay. By means of cryo-scanning electron microscopy, it was shown that bentonite clay is well incorporated into the gel network structure with pore sizes up to 1.5 mu m. The intercalated bentonite clay can adsorb cationic surfactants as well as heavy metal ions due to electrostatic interactions. Conductometric and surface tension measurements indicate not only the adsorption of surfactants and heavy metals inside the hydrogel, but also the displacement of the critical micellization concentration (CMC) of the surfactants.

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Author:Madiar Maratovich Beisebekov, Saniya B. Serikpayeva, Shynar Nurlanovna Zhumagalieva, Marat Kianovich Beisebekov, Zharylkasyn Abduachitovich Abilov, Sabine Kosmella, Joachim KoetzORCiDGND
ISSN:0303-402X (print)
ISSN:1435-1536 (online)
Parent Title (English):Colloid and polymer science : official journal of the Kolloid-Gesellschaft
Place of publication:New York
Document Type:Article
Year of first Publication:2015
Year of Completion:2015
Release Date:2017/03/27
Tag:Bentonite clay; Cationic surfactants; Composite hydrogels; Heavy metal ions
First Page:633
Last Page:639
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie
Peer Review:Referiert