Chemical modification of polypropylene fibers grafted vinyl imidazole/acrylonitrile copolymer prepared by gamma radiation and its possible use for the removal of some heavy metal ions

Abstract

The chemical modification of polypropylene (PP) fibers by graft copolymerization with vinylimidazole (VIm) and acrylonitrile (AN) was carried out using g-radiation. Preparation conditions, such as irradiation dose, comonomer concentration and composition and type of solvent, affecting the degree of grafting were investigated. The suitable diluent for obtaining reasonable graft VIm/ AN copolymer yield was acetone. The higher grafted yield was achieved by increasing the amount of vinylimidazole in comonomer feed solution as well as irradiation dose. The derivatives of PP-g-P(VIm/AN) grafted fibers of different functional groups were obtained by treating the grafted fibers with various organic reagents containing reactive amino groups, such as sulpha-drug compounds, aliphatic-and aromatic amines. Characterization of the obtained graft copolymers and their chemical treatments with different amines was also investigated. It was observed that the nitrile group in PP-g-P(VIm/AN) polymer undergoes simple addition reaction via nucleophilic interaction mechanism to produce the corresponding PPgraft-P(vinylimidazole/acrylomidine) derivatives. The ability of the grafted fibers and their treated forms to absorb some metal ions as Cd, Hg, and Pb from their individual and mixture solutions was evaluated.

Removal of As(V), Cr(III) and Cr(VI) from aqueous environments by poly(acrylonitril-co-acrylamidopropyl-trimethyl ammonium chloride)-based hydrogels

“…These properties are related to the degree of cross linker, ionic strength of the solution, temperature, pH and functional groups. Cross-linked polymers are capable of imbibing large volumes of water, which have found widespread applications in bioengineering, biomedicine, food industry, water purification, and separation processes (Uzum et al, 2007;Hernandez and Mijangos, 2009;Mostafa, 2009;Ozay et al, 2009;Sahiner et al, 2011b). Herein, acrylonitrile (AN) and 3-acrylamidopropyl-trimethyl ammonium chloride (APTMACl) monomers were used for co-polymeric hydrogel preparation as p(APTMACl-co-AN) and then amidoximated for use in the removal of ions such as As(V) and Cr(III) and Cr(VI) from aqueous solutions.…”

“…Herein, acrylonitrile (AN) and 3-acrylamidopropyl-trimethyl ammonium chloride (APTMACl) monomers were used for co-polymeric hydrogel preparation as p(APTMACl-co-AN) and then amidoximated for use in the removal of ions such as As(V) and Cr(III) and Cr(VI) from aqueous solutions. The cyano groups in the acrylonitrile structure can be chemically changed by chemical modification to induce new chemical and physical properties on the polymer substrate (Pekel et al, 2004;Mostafa, 2009;Sahiner et al, 2011b). P(APTMACl) is an attractive cationic smart material possessing quaternary ammonium salt which renders a natural positive charge on the polymer chains (Sahiner and Ilgın, 2010).…”

Construction and Potential Applications of a Functionalized Cell with an Intracellular Mineral Scaffold

“…[10] Compared with conventional methods for removing heavymetal ions from aqueous solutions, biosorption is ideal for the treatment of large volumes of wastewater that contain low concentrations of metal complexes. [10] Compared with conventional methods for removing heavymetal ions from aqueous solutions, biosorption is ideal for the treatment of large volumes of wastewater that contain low concentrations of metal complexes.…”

“…The reduction of the amounts of heavy metals in polluted and waste water to an acceptable level is a huge challenge. [10] Compared with conventional methods for removing heavymetal ions from aqueous solutions, biosorption is ideal for the treatment of large volumes of wastewater that contain low concentrations of metal complexes. [11] We further investigated the properties of the functionalized cells in removing heavy metals by using Pb 2+ ions as an example.…”

Microstructure and sulfonation of dual monomer‐grafted polypropylene nonwoven fabrics

“…Binary monomer grafting presents quite different copolymerization behavior and properties. The effects of grafting parameters, such as irradiation dose, comonomer composition, and type of solvent, on the yields of grafting onto PP fiber were investigated, and those results clearly showed a decrease grafting with the increase of feed acrylonitrile . That grafting behavior was explained by precipitation grafting of acrylonitrile rich copolymers from solvent.…”