Gamma radiation induced preparation of polyampholyte nanocomposite polymers for removal of Co(II)

Elsharma, Emad M.; Saleh, Asri; Abou‐Elmagd, Wael S. I.; Metwally, Essam; Siyam, T.

doi:10.1016/j.ijbiomac.2019.06.081

Cited by 10 publications

(2 citation statements)

References 33 publications

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“…Subsequently, PSU-VIM membranes 70% ( v/v ) showed a mainly heterogeneous surface, due to the formation of aggregates of VIM and accumulation on the membrane surface. A high concentration of VIM and the homopolymerization of this grafting agent elucidated this result [ 53 ], as has already been explained in Experiment 1.…”

Section: Resultssupporting

confidence: 63%

Obtainment and Characterization of Hydrophilic Polysulfone Membranes by N-Vinylimidazole Grafting Induced by Gamma Irradiation

et al. 2020

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Polysulfone (PSU) film and N-vinylimidazole (VIM) were used to obtain grafted membranes with high hydrophilic capacity. The grafting process was performed by gamma irradiation under two experiments: (1) different irradiation doses (100–400 kGy) and VIM 50% solution; (2) different concentration of grafted VIM (30–70%) and 300 kGy of irradiation dose. Characteristics of the grafted membranes were determined by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), contact angle, swelling degree, desalination test, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Both experiments indicated that the absorbed dose 300 kGy and the VIM concentration, at 50% v/v, were effective to obtain PSU grafted membranes with 14.3% of grafting yield. Nevertheless, experimental conditions, 400 kGy, VIM 50% and 300 kGy, VIM 60–70% promoted possible membrane degradation and VIM homopolymerization on the membrane surface, which was observed by SEM images; meanwhile, 100–200 kGy and VIM 30–50% produced minimal grafting (2 ± 0.5%). Hydrophilic surface of the grafted PSU membranes by 300 kGy and VIM 50% v/v were corroborated by the water contact angle, swelling degree and desalination test, showing a decrease from 90.7° ± 0.3 (PSU film) to 64.3° ± 0.5; an increment of swelling degree of 25 ± 1%, and a rejection-permeation capacity of 75 ± 2%. In addition, the thermal behavior of grafted PSU membranes registered an increment in the degradation of 20%, due to the presence of VIM. However, the normal temperature of the membrane operation did not affect this result; meanwhile, the glass transition temperature (Tg) of the grafted PSU membrane was found at 185.4 ± 0.5 °C, which indicated an increment of 15 ± 1%.

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Section: Resultssupporting

confidence: 63%

Obtainment and Characterization of Hydrophilic Polysulfone Membranes by N-Vinylimidazole Grafting Induced by Gamma Irradiation

et al. 2020

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“…Recycled phosphorylated sawdust maintains an 85% removal efficiency of indium ions in the 4th cycle. Elsharma et al (2019) prepared a polyampholyte of nanocomposite bio-polymers, i.e., poly (N,N-diallyldimethylammonium chloride-co-acrylamide) grafted onto carboxymethyl cellulose/iron(III) oxide [P(DADMAC-AAM) CMC/Fe2O3] and poly(N,Ndiallyldimethylammonium chloride-co-sodium acrylate grafted onto carboxymethyl cellulose/iron(III) oxide [P(DADMAC-SA)CMC/Fe2O3]], with various molar ratios of anionic groups and cationic groups using gamma radiation. The structure and morphology of the obtained materials were examined by Fourier transform infrared spectroscopy and scanning electron microscopy.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a New Granulated Polyampholyte and its Sorption Properties

Davron¹,

Mukhamediev²,

Nurbek³

et al. 2020

IJTech

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In this paper, characteristics of the interaction of an anion-exchange resin PPE-1 formed using phosphonic acid and granular polyvinyl chloride were investigated. In addition, a reaction order of 1.43 and an activation energy of 47.8 kJ/mol for phosphorylation were determined. The as-obtained polyampholyte was characterized by scanning electron microscopy (SEM), energydispersive X-ray (EDX) analysis, and Fourier transform infrared (FTIR) spectroscopy. Optimum conditions for obtaining a new polyampholyte that selectively adsorbs non-ferrous metal ions on the basis of granulated polyvinyl chloride were determined. Sorption isotherms for non-ferrous metal ions were constructed, which were reasonably explained by Langmuir isotherms. Various thermodynamic parameters, such as isobaric-isothermal potential (ΔG), enthalpy (ΔH), and entropy (ΔS), were calculated to understand the nature of sorption. The examined polyampholyte selectively absorbed copper(II) ions.

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Interaction of polyampholytic hydrogels based on partially hydrolyzed polyacrylamide with divalent metals

2023

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Gamma radiation induced preparation of polyampholyte nanocomposite polymers for removal of Co(II)

Cited by 10 publications

References 33 publications

Obtainment and Characterization of Hydrophilic Polysulfone Membranes by N-Vinylimidazole Grafting Induced by Gamma Irradiation

Obtainment and Characterization of Hydrophilic Polysulfone Membranes by N-Vinylimidazole Grafting Induced by Gamma Irradiation

Synthesis of a New Granulated Polyampholyte and its Sorption Properties

Interaction of polyampholytic hydrogels based on partially hydrolyzed polyacrylamide with divalent metals

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