Cation exchange resins based on phosphonomethyl‐substituted phenols

Kaiser, Jürgen; Schied, Bernd; Trautmann, Ν.; Vogt, Walter

doi:10.1002/macp.1992.021930326

Cited by 10 publications

(6 citation statements)

References 2 publications

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“…Chelating groups can be incorporated in order to increase the sorb or modify the selectivity of ions. 28,29 So, phenolic resins have been used for extraction of heavy metals, [30][31][32][33][34][35] lanthanide metal ions, [36][37][38][39][40] and radionuclides. 29,[41][42][43][44][45][46][47][48] It is believed that polymers with a combination of diglycolamide derivatives and phenolic group can improve the existing sorbents system developed for REEs extraction.…”

Section: Introductionmentioning

confidence: 99%

Extraction and recovery of rare earths by chelating phenolic copolymers bearing diglycolamic acid or diglycolamide moieties

Arrambide

Arrachart

Berthalon

et al. 2019

Reactive and Functional Polymers

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Extraction and recovery of rare earth elements (REEs) have been studied using ion-exchange and chelating process thanks to phenol copolymeric resins. The ion-exchange and chelating resins have been prepared through an alkaline polycondensation reaction of phenolic diglycolamide derivatives with admixture of phenol, catechol or resorcinol in the presence of formaldehyde as crosslinker. The phenol copolymeric resins were fully characterized and involved in sorption experiments. The sorption experiments of rare earth elements have been investigated in different acidic conditions. Lanthanum (La), europium (Eu) and ytterbium (Yb) were chosen to represent the light, medium and heavy REEs respectively. Changes in the extraction properties of the copolymeric resins have been observed depending on the nature of chelating groups in the phenolic matrices and the extraction conditions. The results indicate that the synthesized materials are good sorbent for REEs with cation uptake capacity in the range 50-100 mg/g and in some cases above 150 mg/g.

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Section: Introductionmentioning

confidence: 99%

Extraction and recovery of rare earths by chelating phenolic copolymers bearing diglycolamic acid or diglycolamide moieties

Arrambide

Arrachart

Berthalon

et al. 2019

Reactive and Functional Polymers

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“…Phosphorus-containing polymers are involved in a large range of applications. For example, they have been used as adhesion promoters for paints, lacquers, and adhesives, 1 flame-retardant additives, 2 complexing agents to recover metal ions from the environment and industrial liquids, 3 and agents for controlling crystallization of CaCO 3 4 and also have been proposed for use in tissue engineering and drug controlled release because of their biocompatibility and biodegradability. 5,6 One of the methods of incorporating phosphorus functionality into polymers is the polymerization or copolymerization of phosphorus-containing vinyl monomers such as vinyl and allyl phosphonates.…”

Section: Introductionmentioning

confidence: 99%

Atom Transfer Radical Polymerization of Dimethyl(1-ethoxycarbonyl)vinyl Phosphate and Corresponding Block Copolymers

Huang

Matyjaszewski

2005

Macromolecules

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Atom transfer radical polymerization (ATRP) of dimethyl(1-ethoxycarbonyl)vinyl phosphate (DECVP) was investigated in the presence of different catalyst systems and initiators. Polymers with controlled molecular weight and relatively low polydispersity (PDI < 1.5) were obtained through ATRP initiated with ethyl 2-bromoisobutyrate (EBriBu) in the presence of Cu(I)Cl/2,2‘-bipyridine (bpy). Faster polymerization and higher monomer conversion were obtained in the polymerization using Cu(I)Cl/ N,N,N‘,N‘ ‘,N‘ ‘-pentamethyldiethylenetriamine (PMDETA) or Cu(I)Cl/1,1,4,7,10,10-hexamethyltriethylenetetramine (HMTETA) as the catalyst system. PDECVP dissolves in water below 70 °C, but its lower critical solution temperature (LCST) depends on the polymer concentration. The conversion of PDECVP to poly((1-ethoxycarbonyl)vinylphosphonic diacid) (PECVPD) was accomplished by reaction with bromotrimethylsilane followed by methanolysis. Block copolymers, PDECVP-b-poly(styrene) (PS), PDECVP-b-PS-b-PDECVP, and PDECVP-b-poly(methyl methacrylate) (PMMA), were synthesized by extending from PS−Br, Br−PS−Br, and PMMA−Br macroinitiators. The controlled block copolymers were obtained, PDECVP-b-PS with M n = 40 500 g/mol and PDI = 1.4, PDECVP-b-PS-b-PDECVP with M n = 41 500 g/mol and PDI = 1.23, and PDECVP-b-PMMA with M n = 29 700 g/mol and PDI = 1.08. Initiation efficiency exceeded 94% using PMMA−Br as the macroinitiator.

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“…Based on 1, we recently obtained a cation-exchange resin which clearly discriminates between different metal cations [4], but the use of 2 seems even more promising. To incorporate these ligands into polymer networks, at least one of the ring positions is needed.…”

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confidence: 99%

(o‐Hydroxyphenyl)methylphosphonic acids: Synthesis and potentiometric determinations of their pK_a Values

Böhmer¹,

Vogt²,

Chafaa³

et al. 1993

Helvetica Chimica Acta

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(o-Hydroxypheny1)methylphosphonic acids are readily obtained from o-(bromomethy1)-or o-(hydroxymethy1)phenols and trialkyl phosphites. Subsequent hydrolysis leads to the corresponding phosphonic acids. For a series of such compounds, the pK, values have been determined by potentiometry. Their dependence on additional substituents in the aromatic ring is discussed in terms of electronic and steric effects.

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Cation exchange resins based on phosphonomethyl‐substituted phenols

Cited by 10 publications

References 2 publications

Extraction and recovery of rare earths by chelating phenolic copolymers bearing diglycolamic acid or diglycolamide moieties

Extraction and recovery of rare earths by chelating phenolic copolymers bearing diglycolamic acid or diglycolamide moieties

Atom Transfer Radical Polymerization of Dimethyl(1-ethoxycarbonyl)vinyl Phosphate and Corresponding Block Copolymers

(o‐Hydroxyphenyl)methylphosphonic acids: Synthesis and potentiometric determinations of their pK_a Values

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Cation exchange resins based on phosphonomethyl‐substituted phenols

Cited by 10 publications

References 2 publications

Extraction and recovery of rare earths by chelating phenolic copolymers bearing diglycolamic acid or diglycolamide moieties

Extraction and recovery of rare earths by chelating phenolic copolymers bearing diglycolamic acid or diglycolamide moieties

Atom Transfer Radical Polymerization of Dimethyl(1-ethoxycarbonyl)vinyl Phosphate and Corresponding Block Copolymers

(o‐Hydroxyphenyl)methylphosphonic acids: Synthesis and potentiometric determinations of their pKa Values

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(o‐Hydroxyphenyl)methylphosphonic acids: Synthesis and potentiometric determinations of their pK_a Values