Radiation synthesis and application of a hydrogel based on acrylic acid and 2‐mercaptobenzimidazole

El-Din, Horia M. M. Nizam

doi:10.1002/app.11047

Cited by 10 publications

(3 citation statements)

References 15 publications

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“…The formation of hydrogels under the effect of gamma radiation is one of our interests because of the strong interaction between chains through covalent bonds, contrary to the physical form of hydrogels through weak interaction. In this regard, the radiation crosslinking and metal sorption of hydrogels based on poly(acrylic acid) with trithioglycolic acid or 2‐mercaptobenzimidazol were investigated 16, 17. Recently, radiation crosslinking and dye sorption of hydrogels, based on 1‐vinyl‐2‐pyrrolidone, hydroxyethyl methacrylate, and their copolymers, were investigated 18.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of hydroxyethyl methacrylate/acrylamide responsive hydrogels

El‐Din

El‐Naggar

2005

J of Applied Polymer Sci

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Hydrogels based on an aqueous solution of hydroxyethyl methacrylate (HEMA) and acrylamide (AM) in the presence of trithioglycolic acid (TTGA) were prepared under the effect of gamma irradiation. These hydrogels were characterized by IR spectroscopy and thermogravimetric analysis and investigated for temperature-and pH-responsive materials. It was found that TTGA is essential for the formation of HEMA/AM hydrogels at different compositions, in which the gel fraction depends on composition. A binary mixture of HEMA and AM at equal ratios was the critical composition that forms hydrogels, even in the presence of TTGA. The IR spectroscopic analysis showed that the formation of hydrogels depends on hydrogen bonding and crosslinking. The TGA investigations with respect to mass loss and the temperatures of the maximum value of the rate of reaction showed that HEMA/AM hydrogels possess higher thermal stability than that of pure HEMA and this stability increases with increasing ratio of the AM component. Also, it was observed that the temperature of the maximum value of the rate of thermal decomposition reaction depends on hydrogel composition. However, calculations of the activation energy showed that the hydrogel composed of 90% HEMA and 10% AM exhibits the highest thermal stability during the increasing or decreasing rate of reaction. Kinetic studies of swelling in water showed that HEMA/AM hydrogels displayed a temperature-responsive character within the temperature range 25-30°C, and showed a stepwise swelling behavior in the pH range 2-10, depending on composition.

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Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of hydroxyethyl methacrylate/acrylamide responsive hydrogels

El‐Din

El‐Naggar

2005

J of Applied Polymer Sci

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“…Adsorbing dye by hydrogel was a preferred method to decolorize the waste organic dyes, due to having high sorption capacity, its simple operation, low cost and biodegradable nature (Shalla et al, 2018). Hydrogels are three-dimensional cross-linked polymeric structures, which are capable of swelling and absorbing large amounts of fluids, thus used in the removal of toxic pollutants from wastewater (Nizam El-Din, 2002). Hydrogels polymer formation by gamma radiation was a beneficial way because radiation is not only polymerized monomers, but also sterilized hydrogels (Ruel-Gariepy et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Effect of Green Silver Nanoparticles Embedded in Irradiated Sodium Alginate /Poly Acrylamide on Removal of Dye Wastes

Partila

El-Hadedy

2020

Journal of Radiation Research and Applied Sciences

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The toxins generated by waste dyes from several industrial sectors in water bodies are hard to evacuate by ordinary water treatment procedures. This study discusses the effect of silver nanoparticles (AgNPs) biosynthesized by Pseudomonas aeruginosa on the degradation of some hazardous dyes such as Bromothymol blue and Fantacell dye. The catalytic properties of the Sodium Alginate/Poly Acrylamide silver nanoparticles, (Na-Alg/Poly-AAm) Ag NPs, were compared to the raw (Na-Alg/Poly-AAm) polymer, of different Acrylamide percentages. The bioproduced AgNPs were of concentration 0.3 mg/100 ml embedded in Na-Alg/Poly-AAm with percentages (50/50, 60/40, 70/30, 80/20, 90/10, and 100%) for polyacrylamide and sodium alginate, respectively. The polymers were polymerized by 3Mega gamma rays. AgNPs were characterized by Dynamic Light Scattering (DLS), Transmission Electron Microscope (TEM) and The X-ray diffraction (XRD) spectroscopy. The study showed that the AgNPs size ranged from 24 to 58 nm. These polymers embedded by AgNPs are considered an excellent catalyst for the reduction of hazardous dyes. This fact is confirmed by a decrease in dyes absorbance revealed by UV-Vis spectroscopy. The maximum reduction percentage for Fantacell dye was 87%, detected at 45 minutes, and the maximum reduction percentage of Bromothymol blue was 87%, detected at 150 min.

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“…Therefore, it is one of our interests to prepare hydrogels under the effect of gamma radiation and to investigate their application in the removal of toxic pollutants. In this regard, hydrogels based essentially on polyacrylic (PAAc) acid with trithioglycolic acid or 2‐mercaptobenzimidazole were recently synthesized by gamma radiation crosslinking and applied in the recovery of Hg 2+ , Pb 2+ , and Cu 2+ ions 8, 9…”

Section: Introductionmentioning

confidence: 99%

Radiation crosslinking and sorption properties of hydrogels based on 1‐vinyl‐2‐pyrrolidone, hydroxyethyl methacrylate, and their copolymers

El-Din

Maziad

El‐Naggar

2004

J of Applied Polymer Sci

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This work has been concerned with the synthesis of the hydrogels of poly (vinyl pyrrolidone) (NVP), poly (hydroxy ethylmethacrylate) (HEMA), and their copolymer under the effect of gamma radiation in the presence of N,N-methylenebisacryl-amide (MBAm) as a crosslinking agent. The effect of the different factors that may affect the gelation and yield product, such as solvent composition and irradiation dose, was investigated. The formed hydrogels were characterized in terms of swelling in water and different organic solvents, X-ray diffraction (XRD), and IR spectroscopic analysis. The sorption capability of these hydrogels towards some commercial basic and acid dyesstuffs was also studied. The results showed that a solvent mixture composed of equal contents of water and methanol is the most suitable to afford the minimum sol fraction and the highest yield product at a minimal irradiation dose of 10 kGy. It was observed that NVP hydrogel displayed the highest swelling in water, alcohols, and dimethyformamide of ϳ1300% and a lower tendency to swell in nonpolar solvents. The results showed that HEMA hydrogel has a high affinity to absorb basic dyes while NVP has a tendency for acid dyes. Also, the sorption of either the basic or acid dyes by the different hydrogels was found to greatly depend on the concentration of dye in solution and the mass of the used hydrogel.

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Radiation synthesis and application of a hydrogel based on acrylic acid and 2‐mercaptobenzimidazole

Cited by 10 publications

References 15 publications

Synthesis and characterization of hydroxyethyl methacrylate/acrylamide responsive hydrogels

Synthesis and characterization of hydroxyethyl methacrylate/acrylamide responsive hydrogels

Effect of Green Silver Nanoparticles Embedded in Irradiated Sodium Alginate /Poly Acrylamide on Removal of Dye Wastes

Radiation crosslinking and sorption properties of hydrogels based on 1‐vinyl‐2‐pyrrolidone, hydroxyethyl methacrylate, and their copolymers

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