Results 131 to 140 of about 585 (160)
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Solute separation by the amidoxime of poly(4-vinylpyridine-co-acrylonitrile)
Journal of Applied Polymer Science, 1987The quantitatively amidoximated poly(4-vinylpyridine-co-acrylonitrile) (4VNX) could be cast with divinyl sulfone as a crosslinking agent to form membranes for reverse osmosis. They were stronger than a cellulose acetate membrane when dried for more then 45 min at 80°C, most balanced in their performance when 4VNX was composed of about 60 mol ...
Eizo Oikawa, Shigeru Tsurumaki
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Synthesis of poly(vinyl alcohol) derivatives containing amidoxime groups
Die Angewandte Makromolekulare Chemie, 1994AbstractThe modification reaction of poly(vinyl alcohol) (PVAL) with acrylonitrile in alkaline medium was studied. The structure of the resulting polymers was determined by means of IR, 1H and 13C NMR spectroscopy. The influence of solvent composition, catalyst and temperature was evaluated.
F. Arranz +2 more
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Synthesis of Novel Poly(amidoxime) Grafted Multiwall Carbon Nanotube Gel and Uranium Adsorption
Journal of Nanoscience and Nanotechnology, 2014This is the first report on the synthesis of a new functional nanocomposite gel containing amidoxime functionalized multiwall carbon nanotube (AO-MWNT-FNC GEL). The surface morphology of AO-MWNT-FNC GEL was investigated by field emission scanning electron microscopy. The modification of gel with amidoxine groups was confirmed by Fourier transform infra
A, Gopalan +3 more
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Journal of Radioanalytical and Nuclear Chemistry, 2017
In this study, a series of spherical poly(styrene-co-acrylonitrile) (P(St-co-AN)) nanoparticles were prepared using flash nanoprecipitation method. TEM images illustrated the controllability of grain sizes by adjusting the feeding initial concentration of copolymer.
Ziwei Zhou +3 more
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In this study, a series of spherical poly(styrene-co-acrylonitrile) (P(St-co-AN)) nanoparticles were prepared using flash nanoprecipitation method. TEM images illustrated the controllability of grain sizes by adjusting the feeding initial concentration of copolymer.
Ziwei Zhou +3 more
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Separation of uranyl ions with amidoximated poly(acrylonitrile/N-vinylimidazole) complexing sorbents
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2003Abstract Acrylonitrile (AN)/N-vinylimidazole (VIm) copolymeric hydrogels were synthesized by irradiating their binary mixtures. The AN moieties of copolymers were amidoximated using hydroxylamine hydrochloride in basic medium. The amidoximated hydrogels were used for separating uranyl ions from aqueous solutions by a complexation process.
Nursel Pekel, Olgun Güven
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Stability constants of amidoximated chitosan-g-poly(acrylonitrile) copolymer for heavy metal ions
Journal of Applied Polymer Science, 1999Amidoximated chitosan-g-poly(acrylonitrile) (PAN) copolymer was prepared by a reaction between hydroxylamine and cyano group in chitosan-g-PAN copolymer prepared by grafting PAN onto crosslinked chitosan with epychlorohydrine. The adsorption and desorption capacities for heavy metal ions were measured under various conditions.
Doo Whan Kang +2 more
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International Journal of Biological Macromolecules, 2019
Pectin was hydrolyzed and was processed in spherically-shaped structure through calcium crosslinker. The synthesized spherical-bead structure was surface functionalized by acrylonitrile grafting reaction, which extends the applications of pectin followed by derivatization with hydroxylamine.
Praveen, Sharma +4 more
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Pectin was hydrolyzed and was processed in spherically-shaped structure through calcium crosslinker. The synthesized spherical-bead structure was surface functionalized by acrylonitrile grafting reaction, which extends the applications of pectin followed by derivatization with hydroxylamine.
Praveen, Sharma +4 more
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Poly(amidoxime) functionalized MoS2 for efficient adsorption of uranium(VI) in aqueous solutions
Journal of Radioanalytical and Nuclear Chemistry, 2018A novel adsorbent for enrichment of trace uranium (U(VI)) ions in aqueous solution is designed based on the excellent adsorption capacity of poly(amidoxime) (PAO) and the excellent chemical properties of MoS2. Specifically, PAO/MoS2 is prepared by plasma induced polymerization of acrylonitrile on MoS2 surfaces, followed by amidoximation treatment with ...
Dadong Shao +4 more
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Polymer Bulletin, 2020
Gallium has important applications in new energy, semiconductor, and many other fields. Although a lot of work has been done in the field of preparing amidoxime resin to obtain gallium, there are still problems such as low adsorption capacity and relatively slow adsorption rate.
Ziyang Chen +4 more
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Gallium has important applications in new energy, semiconductor, and many other fields. Although a lot of work has been done in the field of preparing amidoxime resin to obtain gallium, there are still problems such as low adsorption capacity and relatively slow adsorption rate.
Ziyang Chen +4 more
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Reactive and Functional Polymers, 2004
Abstract N , N ′ -Dipropionitrile acrylamide (DPAAm) monomer was synthesized by the reaction of 3,3 ′ -iminodipropionitrile with acryloyl chloride. This monomer was polymerized by using AIBN as initiator in ethanol solution at 70 °C and a conversion of 77% obtained.
Pınar Akkaş Kavaklı +2 more
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Abstract N , N ′ -Dipropionitrile acrylamide (DPAAm) monomer was synthesized by the reaction of 3,3 ′ -iminodipropionitrile with acryloyl chloride. This monomer was polymerized by using AIBN as initiator in ethanol solution at 70 °C and a conversion of 77% obtained.
Pınar Akkaş Kavaklı +2 more
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