Introduction of a high-density chelating group into a porous membrane without lowering the flux

Yamagishi, Hideyuki; Saito, Kyoichi; Furusaki, Shintaro; Sugo, Takanobu

doi:10.1021/ie00057a028

Cited by 90 publications

(52 citation statements)

References 5 publications

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“…The presence of DMSO in the solution is considered to enhance the reactivity of an epoxy group with IDA2Na through the mechanism of SN2. 30 However, IDA2Na was less soluble in the aqueous DMSO solutions of the volume fraction more than 60 vol %. Therefore, an aqueous 55 vol % DMSO solution was used as the solvent for the preparation of the IDA-(PE-g-PGMA) films.…”

Section: Chelating Functionalization and Membrane Propertiesmentioning

confidence: 99%

Adsorption and desorption properties of the chelating membranes prepared from the PE films

Yamada

Nagano

Hirata

2005

J of Applied Polymer Sci

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ABSTRACT:The chelating membranes for adsorption of metal ions were prepared by the photografting of glycidyl methacrylate (GMA) onto a polyethylene (PE) film and the subsequent modification of the resultant GMA-grafted PE (PE-g-PGMA) films with disodium iminodiacetate in an aqueous solution of 55% DMSO at 80°C. The adsorption and desorption properties of the iminodiacetate (IDA) groupappended PE-g-PGMA (IDA-(PE-g-PGMA)) films to Cu ions were almost the same in each cyclic process of adsorption in a CuCl 2 buffer at pH 5.0 and desorption in an aqueous 1.0M HCl solution. These results indicate that the IDA-(PE-g-PGMA) films can be applied to a repeatedly generative chelating membrane for adsorption and desorption of metal ions.

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Section: Chelating Functionalization and Membrane Propertiesmentioning

confidence: 99%

Adsorption and desorption properties of the chelating membranes prepared from the PE films

Yamada

Nagano

Hirata

2005

J of Applied Polymer Sci

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“…The permeation flux of pure water through the fiber membrane was measured by a constant pressure method working at 0.1 MPa using a home-made apparatus like the one described by Yamagishi et al 5 After membranes were soaked in methanol, water was forced to permeate radially outward across the hollow fiber. Permeation flux was obtained by dividing the permeation flux rate by the inside surface membrane area.…”

Section: Determination Of Pure Water-flux Permeationmentioning

confidence: 99%

“…5 Up to 14 mmol of glycidyl methacrylate (GMA) per gram of the trunk polymer can be added without important flux reduction. 5 Potentially, a very high concentration of reactive epoxy groups is available for ligand immobilization. However, a different degree of success was found to turn all epoxy groups into the desired ligands.…”

Section: Introductionmentioning

confidence: 99%

Radiation‐induced GMA/DMAA graft copolymerization onto porous PE hollow‐fiber membrane

Grasselli

Carbajal

Yoshii

et al. 2002

J of Applied Polymer Sci

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Radiation-induced graft copolymerization is a powerful technique to prepare a grafted chain with the desired properties pending onto the trunk material. In this work, a polyethylene hollow-fiber membrane was modified by this technique. The monomers glycidyl methacrylate (GMA) and N,N-dimethylacrylamide (DMAA) were cografted onto macroporous polyethylene hollow fiber with a grafting degree in the order of 200%. DMAA/GMA cografted membranes were compared to GMA grafted ones for the introduction of an amino acid as a specific ligand. Grafted membranes with a copolymer composition between 0 and 2 DMAA/GMA were prepared by soaking them in solutions of different mixtures of monomers. Copolymers were characterized by FTIR and their composition was estimated by the analysis of the ratio of carbonyl signals. Copolymers with a higher proportion of DMAA showed improved hydrophilic properties and higher conversion rates of epoxy groups on phenyalanine ligands than those of the GMA grafted ones. However, copolymers with a DMAA/GMA ratio higher than 1 showed a detrimental effect on the pure water flux.

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“…Thus far, we have developed modified porous hollow-fiber membranes by this grafting method. Various moieties, such as ion-exchange [20][21][22][23][24][25][26][27][28][29][30][31][32] and chelate-forming [33][34][35][36][37][38][39] groups, and hydrophobic [40][41][42][43][44][45][46][47][48][49] and affinity [50][51][52] ligands have been introduced into polymer chains grafted to a porous hollow-fiber membrane. Ion-exchange and chelating porous hollow-fiber membranes were designed for protein purification and ultrapure water production, respectively.…”

Section: Preparation Of Modified Porous Sheetmentioning

confidence: 99%

Modification of a Porous Sheet (MAPS) for the High-Performance Solid-Phase Extraction of Trace and Ultratrace Elements by Radiation-Induced Graft Polymerization

2010

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They exhibited that the optimization of the retention parameters, e.g., particle sizes, bed length, and sorbent, provides more reliable and less tedious procedures. Recently, automation approaches using flow-processing and on-line analyzers directly 2010 © The Japan Society for Analytical Chemistry † To whom correspondence should be addressed. Chemistry and Biotechnology, Chiba University, Inage, Japan In this review, the preparation of a novel porous sheet designed for solid-phase extraction (SPE) and a comparison of the preconcentration performance of metal ions with conventional sorbents are described. A porous sheet (MAPS) with an average pore diameter, porosity, and a thickness of 1.0 μm, 75%, and 2 mm, respectively, was modified into an sorbent used for solid-phase extraction, by radiation-induced graft polymerization. Ion-exchange and chelating groups were immobilized onto polymer chains grafted to the MAPS. Also, extractants were impregnated via a hydrophobic interaction with long alkyl chains introduced into the grafted polymer chains of the MAPS. The applicability of the resultant modified MAPSs was demonstrated by adopting them to analyses of real samples.

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Introduction of a high-density chelating group into a porous membrane without lowering the flux

Cited by 90 publications

References 5 publications

Adsorption and desorption properties of the chelating membranes prepared from the PE films

Adsorption and desorption properties of the chelating membranes prepared from the PE films

Radiation‐induced GMA/DMAA graft copolymerization onto porous PE hollow‐fiber membrane

Modification of a Porous Sheet (MAPS) for the High-Performance Solid-Phase Extraction of Trace and Ultratrace Elements by Radiation-Induced Graft Polymerization

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