Swelling Characterization of Acrylamide/Zinc Acrylate/Xanthan Gum/Sepiolite Hybrid Hydrogels and Its Application in Sorption of Janus Green B from Aqueous Solutions

Abstract

The aim of this study was to investigate the equilibrium swelling and sorption properties of a series of chemically cross-linked highly swollen hybrid composite hydrogel systems containing polysaccharide/clay polyelectrolyte based on the acrylamide/zinc acrylate and xanthan gum and clay such as sepiolite and these composite hydrogel systems were synthesized with free radical solution polymerization by using ammonium persulfate/N,N,N',N'-tetramethylethylenediamine as a redox initiating pair in the presence of poly(ethylene glycol) diacrylate as a cross-linker. Swelling experiments were performed in water at 25°C, gravimetrically. The hydrogels, the semi-interpenetrating polymer networks, and the hybrid composite hydrogel systems that were synthesized in this study have shown high water absorbency. Some swelling and diffusion properties were calculated, and they were discussed for the hybrid hydrogel systems prepared under various formulations. The equilibrium swelling ratio of chemically cross-linked highly swollen hybrid composite hydrogel systems ranges from 7.175 to 10.883. FT-IR analysis and SEM technique were applied for characterization. Sorption of a water-soluble cationic dye such as Janus Green B in the hydrogel systems was studied by the batch sorption technique at 25°C. For equilibrium sorption studies, adsorption percentage, dye removal capacity, and partition coefficient of the hydrogel systems have been investigated. The values of adsorption percentage of the hydrogels were ranged between 31.00% and 94.57%. Consequently, the hydrogel systems developed in this study could serve as a potential device for water and dye sorbents. C 2015 Wiley Periodicals, Inc. Adv Polym Technol 2016, 35, 21547; View this article online at wileyonlinelibrary.com.

Fabrication of Xanthan gum: Gelatin (Xnt:Gel) Hybrid Composite Hydrogels for Evaluating Skin Wound Healing Efficacy

“…The swelling was measured as described previously (Karadağ, 2015). The dry gel was immersed in HPLC water for 16 h at room temperature.…”

“…Xanthan gum (Xnt) is a high molecular weight anionic heteropolysaccharide composed of (1,4)-β-D-glucose residues as the backbone at which a trisaccharide side chain is linked at C3 position to alternate glucose residues (Brunchi, 2016& Fitzpatrick, 2013. Trisaccharide side chains are composed of mannose, glucuronic acid and mannose linked by β-1,2 and β-1,4 glycosidic bond (Brunchi, 2016& Fitzpatrick, 2013.Approximately half of the terminal mannose residues are linked to pyruvic acid moieties by ketal linkage, while acetyl groups are often present as 6-O substituents on the internal mannose residues (Brunchi, 2016& Fitzpatrick, 2013.Xnt is used as thickening, suspending, and emulsifying agents in pharmaceutics (Karadağ, 2015& Davidson, 1980. It has been used in the hydrophilic matrix formulations for controlled drug release, and it also has applications as a supporting material in enzyme and cell immobilization (Karadağ, 2015;Bhunia, 2013;Bhattacharya, 2012;Alupei, 2002;García-Ochoa, 2000& Davidson, 1980.…”

Remoción De Colorantes Azo Con Alginato: Relación Entre Estructura De Colorante Y Eficiencia De Remoción

“…Por otro lado, se han utilizado biopolímeros como la quitina, el quitosano, la xantana y el alginato de sodio nativos y funcionalizados (Bhatnagar y Sillanpää 2009, Lozano-Álvarez et al 2009, Sadeghi-Kiakhani et al 2013, Ghorai et al 2014, Haldorai y Shim 2014, Mittal et al 2014y Karadag et al 2016. Sin embargo, la funcionalización incrementa el costo de producción y disminuye su biodegradabilidad.…”

Nanocomposite of 2‐Aminophenol with Aniline Using Copper‐Montmorillonite: Synthesis, Characterization, Conductivity, and Electrochemical Study

“…Clay minerals have unique ion exchange, swelling, and intercalation capacities. This makes them suitable in a wide range of application as polymer–clay nanocomposites, a rheological modifier in paints, inks, greases, absorbent for toxic gases, and drug delivery systems . The most commonly used clay in the synthesis of polymer nanocomposites is montmorillonite.…”