Recent Advances in the Chemistry and Applications of the Diphonix Resins

Horwitz, E. P.; Chiarizia, R.; Alexandratos, Spiro D.; Gula, Michael J.

doi:10.1021/bk-1999-0716.ch014

Cited by 6 publications

(2 citation statements)

References 9 publications

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“…Diphonix ® resin (Fig. ) is a commercially available ion‐exchange resin that contains covalently bonded diphosphonic, sulfonic and carboxylic acid groups on the polymer main chain . In addition to Ca(II), Cd(II), Cu(II) and other heavy metal ions, Diphonix ® has shown selectivity for the removal of uranium in aqueous environments .…”

Section: Sequestration Of Heavy Metal Ions From Environmental Wastewamentioning

confidence: 99%

Polymer sequestrants for biological and environmental applications

Archer

Hall

Thompson

et al. 2019

Polymer International

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Toxic contaminates have profound consequences on both health and the environment. Consequently, effective approaches for addressing the effects of these toxicants are paramount. Here, we review recent progress in developing polymeric sequestrants for biological toxins, heavy metals and organic micropollutants. Polymers have several advantages as sequestration materials, including relatively low cost and high affinity for target compounds. As a result a number of polymer-based toxin-mitigation applications have been investigated. Naturally occurring toxins may be neutralized with polymers capable of binding and eliminating them from the body. Heavy metal contamination from mining operations, energy and industrial sources may also be mitigated with appropriate chelating polymers, both for environmental remediation and in chelation therapy for metal poisoning. Micropollutants such as pesticides from agriculture and polycyclic aromatic hydrocarbons from combustion processes may also be isolated using polymeric materials. Each of these applications illustrates the capabilities of polymers for eliminating toxic contaminants, thereby facilitating greater health and sustainability.

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Section: Sequestration Of Heavy Metal Ions From Environmental Wastewamentioning

confidence: 99%

Polymer sequestrants for biological and environmental applications

Archer

Hall

Thompson

et al. 2019

Polymer International

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“…The widely available polystyrene-based sulfonic acid resin has very similar affinities for a wide range of cations (6) due to similar free energy of reactions (7). This ion exchange resin can be used to remove metal ions such as copper from solutions but only when the level of competing ions such as calcium and iron are low (8).…”

Section: Polymersmentioning

confidence: 99%

Polymer-Supported Reagents: The Role of Bifunctionality in the Design of Ion-Selective Complexants

Alexandratos¹

2001

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The importance of multi-functionality in the preparation of ion-selective polymers is evident from the structure of enzymes where specific metal ions are bound through cooperative interactions among different amino acids. In synthetic polymers, ionic selectivity is enhanced when a chemical reaction is superimposed on an ion exchange process. The concept of reactive ion exchange has been extended through the synthesis of crosslinked polymers whose metal ion selectivity is a function of reduction, coordination or precipitation reactions as determined by various covalently-bound ligands. Development of three classes of dual mechanism bifunctional polymers, a new series of bifunctional diphosphonate polymers, and novel bifunctional ion-selective polymers with enhanced ionic accessibility will be presented. Bifunctional anion-selective polymers, interpenetrating polymer networks, and high-stability solvent impregnated resins will also be examined.

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Phosphorus‐Containing Polymers and Oligomers

Weil¹

2006

Encyclopedia of Polymer Science and Technology

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Phosphorus polymers and oligomers are surveyed with emphasis on methods of synthesis and utility. Red phosphorus is a useful flame‐retardant insoluble polymer. Polyphosphoric acid has catalytic utility, and its salts find use in chelation and flame retardancy. Phosphorus‐nitrogen polymers and oligomers may be involved in the synergistic flame‐retardant action of combinations of phosphorus and nitrogen compounds, such as on cellulose. Lower‐oxidation‐state organic phosphorus polymers and oligomers such as phosphines and phosphites have stabilizer and catalyst utility. Higher‐oxidation‐state phosphorus polymers and oligomers such as phosphates and phosphonates, made mainly by condensation reactions, have flame‐retardant utility in plastics as additives and reactive modifiers, and also in as textile additives and finishes.

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Recent Advances in the Chemistry and Applications of the Diphonix Resins

Cited by 6 publications

References 9 publications

Polymer sequestrants for biological and environmental applications

Polymer sequestrants for biological and environmental applications

Polymer-Supported Reagents: The Role of Bifunctionality in the Design of Ion-Selective Complexants

Phosphorus‐Containing Polymers and Oligomers

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