Swelling and dye sorption studies of acrylamide/2-acrylamido-2-methyl-1-propanesulfonic acid/bentonite highly swollen composite hydrogels

Kundakcı, Semiha; Üzüm, Ömer Barış; Karadağ, Erdener

doi:10.1016/j.reactfunctpolym.2007.11.008

Cited by 95 publications

(32 citation statements)

References 25 publications

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“…The other important characteristic band is shown at 1040 cm −1 , which is due to Si O vibrations. [14][15][16]24 …”

Section: Ft-ir Analysismentioning

confidence: 99%

“…[11][12][13] In recent years, polymer/clay hybrid composite hydrogels have received great attention because of their relatively low production cost and high adsorption capacity for some dyes and metal ions. 1,2,9,[14][15][16] To reduce costs and improve the comprehensive water-absorbing properties of superabsorbent materials based on acrylic monomers, grafting acrylic monomers onto clay and fabricating a composite consisting of a polymer and clay can be a priority. 1,2,9,[14][15][16] In many previous studies, several kinds of superabsorbent composites based on attapulgite, sepiolite, montmorillonite (MMT), and bentonite were prepared and these superabsorbent composites showed high water absorbency and water retention, good salt resistance, and low production costs in comparison with pure organic superabsorbent polymers under the same preparation condition.…”

mentioning

confidence: 99%

“…1,2,9,[14][15][16] To reduce costs and improve the comprehensive water-absorbing properties of superabsorbent materials based on acrylic monomers, grafting acrylic monomers onto clay and fabricating a composite consisting of a polymer and clay can be a priority. 1,2,9,[14][15][16] In many previous studies, several kinds of superabsorbent composites based on attapulgite, sepiolite, montmorillonite (MMT), and bentonite were prepared and these superabsorbent composites showed high water absorbency and water retention, good salt resistance, and low production costs in comparison with pure organic superabsorbent polymers under the same preparation condition. 1,2,9,[14][15][16] The present paper reports that swelling in water and sorption study of ST by a novel type of polysaccharide/clay polyelectrolyte hydrogel systems based on the acrylamide/sodium methacrylate (AAm/SMA) and CR and clay such as MMT via a free radical solution polymerization method.…”

mentioning

confidence: 99%

“…1,2,9,[14][15][16] In many previous studies, several kinds of superabsorbent composites based on attapulgite, sepiolite, montmorillonite (MMT), and bentonite were prepared and these superabsorbent composites showed high water absorbency and water retention, good salt resistance, and low production costs in comparison with pure organic superabsorbent polymers under the same preparation condition. 1,2,9,[14][15][16] The present paper reports that swelling in water and sorption study of ST by a novel type of polysaccharide/clay polyelectrolyte hydrogel systems based on the acrylamide/sodium methacrylate (AAm/SMA) and CR and clay such as MMT via a free radical solution polymerization method. It was reported that some groups have synthesized SMA-based cross-linked polymers and/or copolymers.…”

mentioning

confidence: 99%

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A Study of Polymer/Clay Hybrid Composite Sorbent‐Based AAm/SMA Hydrogels and Semi‐IPNs Composed of ɩ‐Carrageenan and Montmorillonite for Water and Dye Sorption

et al. 2014

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ABSTRACT:A series of chemically cross-linked hybrid composite hydrogel systems containing polysaccharide/clay polyelectrolyte based on the acrylamide/sodium methacrylate (AAm/SMA) and ɩ-carrageenan and clay such as montmorillonite 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. Fourier transform infrared spectroscopy (FT-IR) analysis and scanning electron microscopy (SEM) technique were applied for characterization. The hydrogels, the semi-interpenetrating polymer networks (semi-IPNs), 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. They were used in experiments on sorption of water-soluble cationic dye such as Safranin T (ST). The sorption of ST into the polymeric systems was studied by a batch sorption technique at 25°C. For equilibrium sorption studies, dye removal capacity, adsorption percentage, and partition coefficient of the hydrogels, the semi-IPNs, and the hybrid composite hydrogel systems are investigated. Consequently, the hydrogels, the semi-IPNs, and the hybrid composite hydrogel systems developed in this study could serve as a potential device for water and dye sorbents. Some materials such as the hydrogels, the semi-IPNs, and the hybrid composite hydrogel systems developed in this study with the ability to absorb water in high amounts could be used as a water and dye sorbents because of their potential applications in agriculture, environment, separation processes, and water purification. C

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“…The other important characteristic band is shown at 1040 cm −1 , which is due to Si O vibrations. [14][15][16]24 …”

Section: Ft-ir Analysismentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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A Study of Polymer/Clay Hybrid Composite Sorbent‐Based AAm/SMA Hydrogels and Semi‐IPNs Composed of ɩ‐Carrageenan and Montmorillonite for Water and Dye Sorption

et al. 2014

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“…Superabsorbents hydrogels are crosslinked hydrophilic polymer networks that can absorb and retain large quantities of aqueous fluids, reaches thousands times of the initial weight, even under certain pressure [1][2][3]. Due to their excellent properties, superabsorbents hydrogels are used for many applications, including agriculture [4][5][6], horticulture, hygienic products [7], waste water treatment [8][9][10], drug delivery [11,12], etc. Cellulose is a most abundant natural polymer, exhibiting several favorable properties including good biodegradability, biocompatibility, low cost and low toxicity.…”

Section: Introductionmentioning

confidence: 99%

Radiation synthesis and characterization of super absorbent hydrogels for controlled release of some agrochemicals

Maziad

Fadl

El-Kelesh

et al. 2015

J Radioanal Nucl Chem

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Superabsorbent copolymers of carboxymethyl cellulose/polyacrylamide (CMC/PAM) and carboxymethyl celullose/polyacrylamide/silica (CMC/PAM/Si) were synthesized using a c-irradiation technique. The effects of irradiation dose, content of CMC, AM, and Si on swelling percentage of the produced hydrogels were evaluated. It was found that the maximum swelling percent increased dramatically up to 12,000 % at pH 12 with increasing content of silica up to 5 % in the CMC/PAM/Si composite hydrogel. The prepared copolymers were characterized by FTIR, and SEM techniques. In order to evaluate their controlled release potentials, different hydrogels were loaded with potassium nitrate (KNO 3 ), and the release of the KNO 3 was studied and evaluated at various pH values.

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Superabsorbent Materials

Wang¹,

Wang²

2009

Kirk-Othmer Encyclopedia of Chemical Technology

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Superabsorbent materials (SAMs) are hydrophilic polymer networks that can rapidly absorb water at amounts hundreds or even thousands times their own mass, and they can retain the absorbed water for a long time even under some pressure. Because of their excellent properties, SAMs are mainly used in disposable hygiene products as substitutes for traditional absorbents (cotton, sponge, wood pulp, and colloidal silica) and used in modern agriculture as water‐saving materials. Since the commercialization of the first SAM in 1978, the global yield and consumption of SAM was dramatically increased year by year, and the applications of such materials were also extended to other fields, such as wastewater treatment, medicine, construction, and sealing materials. Although SAMs are only decades old, they has developed into one of the most potential and prospective polymer materials in the market. Common SAMs are generally white sugar‐like hygroscopic materials, which can be classified as the following three types: starch‐based SAM, cellulose‐based SAM, and synthetic SAM. Today, the common commercial SAMs are cross‐linked sodium polyacrylate prepared through solution or inverse‐suspension polymerization techniques. In allusion to the drawbacks of currently prepared SAMs (including low salt‐resistance, high production cost, and poor gel strength), multiple kinds of raw materials and preparation methods were developed and adopted by manufacturers. Based on the above description, the development background, characteristics, chemical structures, type, physical and chemical properties of SAM, and the corresponding applied research works and future development prospects are introduced in this article.

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Swelling and dye sorption studies of acrylamide/2-acrylamido-2-methyl-1-propanesulfonic acid/bentonite highly swollen composite hydrogels

Cited by 95 publications

References 25 publications

A Study of Polymer/Clay Hybrid Composite Sorbent‐Based AAm/SMA Hydrogels and Semi‐IPNs Composed of ɩ‐Carrageenan and Montmorillonite for Water and Dye Sorption

A Study of Polymer/Clay Hybrid Composite Sorbent‐Based AAm/SMA Hydrogels and Semi‐IPNs Composed of ɩ‐Carrageenan and Montmorillonite for Water and Dye Sorption

Radiation synthesis and characterization of super absorbent hydrogels for controlled release of some agrochemicals

Superabsorbent Materials

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