Cation‐exchange fabric prepared by electron beam‐induced graft copolymerization of binary monomer mixture

Bandar, Yuliya; Kim, Hong Je; Lim, Yong Jin; Kravets, L. I.

doi:10.1002/masy.200351215

Cited by 3 publications

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“…By focusing the attention on surface‐grafting methodologies and by taking into account the application of our interest, some related literature has been found: electron beam irradiation (EBI), plasma, gamma rays, and photoinduced grafting were applied directly onto different PP‐based materials such as nonwoven fabric, membranes, and fibers. The products were used to react with different ionic species: Cu(II), rare earth ions, nitrogen, and phosphorus compounds 19–27. In particular, Lin and Hsieh20 found retention values around 50% for Cu(II) with low concentrations of metal ion (95 ppm) and a moderate temperature (40°C) by using fibrous morphology with high GD (120 wt %).…”

Section: Introductionmentioning

confidence: 99%

Grafting of polypropylene and its potential use as metal ion adsorption resin

Amaro

Rivas

Coiai

et al. 2009

J of Applied Polymer Sci

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Polypropylene (PP) was modified by radical grafting of acrylic acid (AA) in the melt by using dicumyl peroxide (DCP) as initiator. To reach a high grafting degree (GD) without substantially modifying PP-chain structure, a few runs were carried out by employing butyl 3-(2-furanyl)propenoate (BFA), which is a coagent able to preserve the molecular weight (MW) of PP macromolecules in the presence of radical grafting reagents. All the samples were extracted with selective solvents to remove unreacted chemicals and free poly(acrylic acid) (PAA), and the GD was accurately determined by using the FTIR methodology. The GD ranged from 1.51 to 4.67 mol %. High-temperature size permeation chromatography analysis was used to evaluate MW behavior, confirming the control exerted by the presence of BFA on the degradation reactions. DSC, TGA, and SEM analyses were performed to analyze the chemical modification effects on the polymer products' thermal and morphological properties. Finally, selected samples, with a particle size distribution in the range 100-850 lm, were tested as metal ion adsorption resins. Al(III), Cr(III), Zn(II), Cd(II), Pb(II), and Hg(II) were studied, and the highest adsorption efficiency values (in percentage) were obtained for Al(III) (15-20%) and Hg(II) (25-30%).

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Section: Introductionmentioning

confidence: 99%

Grafting of polypropylene and its potential use as metal ion adsorption resin

Amaro

Rivas

Coiai

et al. 2009

J of Applied Polymer Sci

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Radiation-grafted copolymers for separation and purification purposes: Status, challenges and future directions

Nasef

Güven

2012

Progress in Polymer Science

234

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Preparation and Characterization of Nonwoven Polypropylene Fabric Irradiation-grafted with Acrylic Acid as Weakly Acidic Cation Exchange Fiber

Li¹,

Wei²,

Yuan³

et al. 2009

IJC

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Graft polymerization of acrylic acid onto nonwoven polypropylene (PP) fabric was carried out by a preirradiation method using a 60 Co gamma radiation source. Results showed that 2.2'-Azobisisobutyronitrile (AIBN), its concentration was 0.2%, was very important during the grafting polymerization without removal of polymerization inhibitor of AA. The most favorable grafting polymerization conditions were that the total preirradiation dose was under 60 kGy, the monomer concentration was lower than 30%, and the bath ratio was 1:200. FT-IR spectroscopy, surface morphology (SEM), wide angle X-ray diffraction (WAXD) spectra of the original PP and the grafted PP were also studied. Keywords: Polypropylene, Graft, PreirradiationPeople have paid more and more attention to the environment protection because of the increasing environmental pollution all over the world. Hence, environmentally clean radiation technologies, such as the radiation induced grafting polymerization, have been an efficient and convenient method for modification of polymeric substrates since the second half of last century. Meanwhile ion exchange fibers have played an more important role in removal of heavy metals from wastewater and acidic gas in recent years, due to their large specific surface areas and high adsorption rates. So the synthesis of these ion exchange fibers by using radiation-induced graft polymerization, have attracted the attention of many investigators (Okamoto, 1984, Yun, L, 1994. The weakly acidic cation exchange fiber in this study is nonwoven polypropylene (PP) fabric with radiation induce-grafted acrylic acid (AA). PP is a diffusely used material because of its outstanding mechanical properties and cost-effectiveness. This type of ion exchangers with carboxy group is widely used to remove heavy metals from seawater, and ammonia, amines, and alkali aerosols from atmosphere. And the previous research has been mainly focused on the basal conditions of reaction, such as solvent type, comonomer compositions, the total irradiation dose, dose rate and so on, and its applications. Although the preparation of the monofunctional group carboxylate cation exchanger based on strong, chemically inert, and nontoxic fiber has been carried out, the process should been made as perfect and effective as possible.In generally, grafting polymerization is carried out by three different methods; (I) direct irradiation of fiber in monomer solution (II) vapor phase irradiation method (III) preirradiation. Several procedures for preparing PP fibers with grafted AA are known (U Zhun Zhui, 1963). Tesetlin et al. (Malakhova, L.I., 1972) prepare these fibers by direct irradiation under AA vapor at reduced pressure. This indicates that maintaining reduced pressure of AA in an installation exposed to gamma radiation is a complicated problem. And the problem of efficient removal of the heat of the grafting under these conditions is very complex. Besides, removal of the polymerization inhibitor in AA is a slow process, and the irradiation-grafting p...

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Cation‐exchange fabric prepared by electron beam‐induced graft copolymerization of binary monomer mixture

Cited by 3 publications

References 0 publications

Grafting of polypropylene and its potential use as metal ion adsorption resin

Grafting of polypropylene and its potential use as metal ion adsorption resin

Radiation-grafted copolymers for separation and purification purposes: Status, challenges and future directions

Preparation and Characterization of Nonwoven Polypropylene Fabric Irradiation-grafted with Acrylic Acid as Weakly Acidic Cation Exchange Fiber

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