Adsorption of metal ions on polyaminated highly porous chitosan chelating resin

Kawamura, Yoshihide; Mitsuhashi, Masaki; Tanibe, Hiroaki; Yoshida, Hiroyuki

doi:10.1021/ie00014a015

Cited by 271 publications

(151 citation statements)

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“…6) For most medical applications, the polysaccharide network of chitosan should be crosslinked in order to improve its mechanical properties and to control its biodegradability. Various reagents have been used such as epoxy compounds, formaldehyde, and glutaraldehyde, 7), 8) but these cross-linking agents are all highly cytotoxic and may impair the biocompatibility of the cross-linked biomaterials.…”

Section: Introductionmentioning

confidence: 99%

Preparation of organic–inorganic hybrids with silicate network for the medical applications

Shirosaki

2012

J. Ceram. Soc. Japan

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Novel strategies for regenerating or reconstructing damaged bone tissues are of urgent necessity, because of limitations in conventional therapies for trauma, congenital defects, cancer, and other bone diseases. The tissue engineering approach to repair and regeneration is founded upon the use of biodegradable polymer scaffolds, which may manipulate bone cell functions, encourage the migration of bone cells from border areas to the defect site, and provide a source of inductive factors to support bone cell differentiation. During the past decades, scaffolds from natural biodegradable polymers such as collagen, gelatin, fibrin, and alginates, or synthetic biodegradable polymers such as polyglycolide, polylactides, and copolymers of glycolide with lactides have been extensively explored. On the other hand, it has been confirmed that the bonelike apatite layer, deposited spontaneously on the biomaterial surfaces, can enhance osteoconductivity. The presence of such bone-like apatite layers is also believed to be a prerequisite to conduction of osteogenic cells into various porous scaffolds or onto the surface of bioactive glasses. The formation of such bone-like apatite is favored by the cooperative behavior of a hydrated silica or titania gel surface SiOH or TiOH groups as well as calcium ions to be released into the body fluid when implanted. Thus, hybrid materials derived from the integration of biodegradable polymers with bioactive inorganic species may construct a new group of scaffolds appropriate for tissue engineering. Moreover, tissue engineering approach depends on the use of porous scaffolds that serve to support and reinforce the regenerating tissue. Controlled porous structures of these scaffolds allow cell attachment, and migration, tissue generation, or vascularization. The synthesis of novel chitosan-silicate hybrids derived from the integration of chitosan and £-glycidoxypropyltrimethoxysilane (GPTMS) has been studied. Some of the results on this hybrid for biomedical application are introduced.

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Section: Introductionmentioning

confidence: 99%

Preparation of organic–inorganic hybrids with silicate network for the medical applications

Shirosaki

2012

J. Ceram. Soc. Japan

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“…(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39) However, developing chitosan thin film doped with an ionophore as a specific heavy metal ion sensing material to combine with SPR has not been reported. A sensitive ionophore with sulfur donor atoms, i.e., tetrabutyl thiuram disulfide (TBTDS) is expected to provide high sensitivity and selectivity for Zn 2+ determination.…”

Section: Introductionmentioning

confidence: 99%

Immobilization of Tetrabutyl Thiuram Disulfide in Chitosan Thin Film for Sensing Zinc Ion Using Surface Plasmon Resonance Spectroscopy

Fen¹,

Yunus²,

Talib³

2013

Sensors and Materials

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Tetrabutyl thiuram disulfide (TBTDS) immobilized in chitosan thin film has been studied as a sensor element for zinc ion, Zn 2+ , using surface plasmon resonance (SPR). The TBTDS-immobilized chitosan thin film, which acts as an active layer, was coated on a gold film by spin coating. Zn 2+ can be detected by measuring the SPR signal when TBTDS-immobilized chitosan thin film contacts with Zn 2+ in solution. The sensor produced a linear response for Zn 2+ ranging from 0.1 to 1 ppm with a sensitivity of 0.0317° ppm −1 . Using immobilized TBTDS as an active layer, the Zn 2+ can also be selectively detected when present in mixtures of heavy metal ions.

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“…Sorbents can be jprepared both from unmodifi ed cross-linked PEI [3][4][5][6] and from the functionalized polymer [6][7][8][9][10][11][12]. PEI as a polyamine is highly active in sorption of Hg(II) (3.3 mmol g -1 [3]), Cu(II), Ni(II), Co(II), and Zn(II) ions (no less than 2 mmol g -1 [6]) and, in combination with chitosan, in sorption of Hg(II) [4], Pt(IV), and Pd(II) ions [5]. Such complexing properties of PEI allow preparation of structure-forming [13,14] and metal-containing catalytic [15] materials based on it.…”

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confidence: 99%

Preparation of a chelating sorbent based on pyridylethylated polyethylenimine for recovering transition metal ions

et al. 2013

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Abstract-A method was developed for preparing a chelating amino polymer, pyridylethylpolyethylenimine with maximal degree of substitution, by polymer-analogous transformations of branched polyethylenimine in reaction with 2-vinylpyridine. The ability of cross-linked pyridylethylpolyethylenimine with the degree of substitution of 0.32 to sorb Cu 2+ , Ni 2+ , Co 2+ , Zn 2+ , Cd 2+ , Mn 2+ , and Pb 2+ ions present simultaneously in solution was evaluated. In an ammonium acetate sorption system (pH 3.5-4.0), the sorbent selectively interacts with Cu(II) ions.

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Adsorption of metal ions on polyaminated highly porous chitosan chelating resin

Cited by 271 publications

References 5 publications

Preparation of organic–inorganic hybrids with silicate network for the medical applications

Preparation of organic–inorganic hybrids with silicate network for the medical applications

Immobilization of Tetrabutyl Thiuram Disulfide in Chitosan Thin Film for Sensing Zinc Ion Using Surface Plasmon Resonance Spectroscopy

Preparation of a chelating sorbent based on pyridylethylated polyethylenimine for recovering transition metal ions

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