Phosphorylated Cotton Cellulose as a Cation-Exchange Material

Jurgens, Julian F.; Reid, J. David; Guthie, John D.

doi:10.1177/004051754801800105

Cited by 34 publications

(15 citation statements)

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“…In the present paperi this theme was extended by investigating the growth of hydroxyapatite on cotton which becomes an ion-exchange material after phosphorylation. In 1948, it was reported that cotton cellulose phosphorylated by the urea/ phosphoric acid method [5] was useful as a cation exchange material for Ca 2 ÷ ion. In the present study, cotton phosphorylated by the urea/phosphorous acid method as reported by Inagaki et al [-6] will be used as a substrate for growing calcium phosphates.…”

Section: Introductionmentioning

confidence: 99%

Growth of calcium phosphate on surface-modified cotton

Mucalo

Yokogawa

Toriyama

et al. 1995

J Mater Sci: Mater Med

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Section: Introductionmentioning

confidence: 99%

Growth of calcium phosphate on surface-modified cotton

Mucalo

Yokogawa

Toriyama

et al. 1995

J Mater Sci: Mater Med

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“…The difference in the samples, however, could be seen in the comparison of the Ca:P ratios measured at 0.80 + 9% (see Table II) which is more than 3.5 times larger than that measured for the urea/HaPO3-modified cotton fibres after soaking an equivalent period in 1.5 x SBF. The high Ca 2+ ion uptake of H3PO4-modified cotton fibres had been reported as long ago as 1948 by Jurgens et al [6].…”

Section: Urea/h3po4-modified Cotton Systems 1 Initial Attempts At Camentioning

confidence: 75%

Further studies of calcium phosphate growth on phosphorylated cotton fibres

Mucalo

Yokogawa

Suzuki

et al. 1995

J Mater Sci: Mater Med

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Further studies using scanning electron microscopy/energy dispersive X-ray analysis (SEM/EDX), micro-Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and solid state magic angle spinning nuclear magnetic resonance (MAS NMR) techniques of calcium phosphate growth on Ca(OH)rtreated urea/H3PO3-and urea/H3PO4-modified cotton fibres are reported. In the case of the Ca(OH)2-treated urea/HaPO3-modified fibres which have been reported in an earlier paper, further experiments subjecting the urea/H3PO3-modified cotton to alternative soaking treatment procedures to Ca(OH)2 as well as different calcium phosphate growth media such as the alkaline phosphatase-catalysed hydrolysis of disodium p-nitrophenylphosphate to free phosphate have reaffirmed the importance of the Ca(OH)2 treatment step for the stimulus and growth of calcium phosphate growth on the fibres. Studies on cotton phosphorylated by a slightly different method using urea/H3PO4 instead of urea/H3PO3 show that a phosphorylated cotton with similar properties to the urea/H3PO3-modified fibres can be produced. Soaking of these fibres in saturated Ca(OH)2 solution leads to cotton coated with thin layers of calcium phosphate formed by partial hydrolysis of the PO4 functionalities in the phosphorylated cotton which are believed to act as nucleation layers for further calcium phosphate deposition when the fibres are subsequently soaked in 1.5 x SBF solution. SEM/EDX studies of the calcium phosphate coatings formed on the Ca(OH)2-treated urea-H3PO4 fibres as a function of soaking time in 1.5 x SBF show that coatings deposit and become noticeably thick after approximately 9 days. XPS studies indicated the presence of carbonate species in the calcium phosphate coating deposited. In common with the calcium phosphate coated Ca(OH)2-treated urea/H3PO3-modified fibres studied earlier, the average EDX-measured Ca:P ratios of the coatings formed on the Ca(OH)2-treated urea/H3PO4 fibres are --~ 1.60 and give very similar micro-FTIR spectra with evidence of carbonate which suggests that amorphous calcium deficient apatite has deposited.

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“…Modified natural polymers are often chosen as a matrix, mostly for ecological reasons. Adsorption of metal ions on cellulose phosphate has been studied for decades [ 29 , 30 , 31 , 32 , 33 , 34 ]. Phosphorylated cellulose was successfully applied in the rapid removal process of divalent and trivalent ions, such as Cu 2+ , Zn 2+ , Co 2+ , Ni 2+ , Pb 2+ , Mn 2+ , Fe 2+ , Fe 3+ , Cr 3+ and lanthanides [ 5 ].…”

Section: Resins Preparationmentioning

confidence: 99%

Polymer-Supported Phosphoric, Phosphonic and Phosphinic Acids—From Synthesis to Properties and Applications in Separation Processes

Głowińska

Trochimczuk

2020

Molecules

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Efficient separation technologies are crucial to the environment and world economy. The challenge posed to scientists is how to engineer selectivity towards a targeted substrate, especially from multicomponent solutions. Polymer-supported reagents have gained a lot of attention in this context, as they eliminate a lot of inconveniences concerning widely used solvent extraction techniques. Nevertheless, the choice of an appropriate ligand for immobilization may be derived from the behavior of soluble compounds under solvent extraction conditions. Organophosphorus compounds play a significant role in separation science and technology. The features they possess, such as variable oxidation states, multivalence, asymmetry and metal-binding properties, highlight their status as a unique and versatile class of compounds, capable of selective separations proceeding through different mechanisms. This review provides a detailed survey of polymers containing phosphoric, phosphonic and phosphinic acid functionalities in the side chain and covers main advances in the preparation and application of these materials in separation science, including the most relevant synthesis routes (Arbuzov, Perkow, Mannich, Kabachnik-Fields reactions, etc.), as well as the main stages in the development of organophosphorus resins and the most important achievements in the field.

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Phosphorylated Cotton Cellulose as a Cation-Exchange Material

Cited by 34 publications

References 1 publication

Growth of calcium phosphate on surface-modified cotton

Growth of calcium phosphate on surface-modified cotton

Further studies of calcium phosphate growth on phosphorylated cotton fibres

Polymer-Supported Phosphoric, Phosphonic and Phosphinic Acids—From Synthesis to Properties and Applications in Separation Processes

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