Novel Polymeric Materials for Application in Liquid Phase Separations

A special issue of Separations (ISSN 2297-8739).

Deadline for manuscript submissions: closed (30 April 2020) | Viewed by 4577

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Department of Chemistry and Biochemistry, College of Humanities and Sciences, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA
Interests: electrokinetic chromatography; polymeric nanoparticles; environmental analytical chemistry
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Special Issue Information

Dear Colleagues,

Directed development and application of polymeric materials has resulted in significant progress in separation science and effective, efficient and selective separations of a wide variety of analytes. Polymeric materials have been utilized to effect separations by many and varied approaches, including as stationary phases and monoliths in liquid chromatography, gels and solubilized sieving matrices in capillary electrophoresis, coatings to minimize analyte adsorption and alter surface properties, as pseudo-stationary phases in electrokinetic chromatography, and as sorbents for selective extraction and recovery of analytes from complex matrices. This Special Issue will focus on recent advances in the development and application of polymeric materials for application in liquid phase separations. Authors are invited to submit research papers and/or review articles.

Prof. Dr. Christopher Palmer
Guest Editor

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Keywords

  • monoliths
  • templated polymers
  • nanoparticles
  • coatings
  • gels

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Published Papers (1 paper)

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Research

9 pages, 1708 KiB  
Article
The Effect of Gamma Irradiation on the Ion Exchange Properties of Caesium-Selective Ammonium Phosphomolybdate-Polyacrylonitrile (AMP-PAN) Composites under Spent Fuel Recycling Conditions
by Alistair F. Holdsworth, Harry Eccles, Daniel Rowbotham, Gary Bond, Parthiv C. Kavi and Ruth Edge
Separations 2019, 6(2), 23; https://doi.org/10.3390/separations6020023 - 24 Apr 2019
Cited by 19 | Viewed by 4198
Abstract
The caesium radioisotopes 134Cs, 135Cs, and 137Cs are highly problematic medium-lived species produced during nuclear fission, due to their high radioactivity and environmental mobility. While many ion exchange materials can readily isolate Cs+ ions from neutral or basic aqueous [...] Read more.
The caesium radioisotopes 134Cs, 135Cs, and 137Cs are highly problematic medium-lived species produced during nuclear fission, due to their high radioactivity and environmental mobility. While many ion exchange materials can readily isolate Cs+ ions from neutral or basic aqueous solutions, only ammonium phosphomolybdate (AMP) functions effectively in acidic conditions, removing caesium even down to trace levels. Composites of AMP in a porous polymeric support such as polyacrylonitrile (PAN) can be used to selectively remove Cs+ ions from acidic aqueous decontamination liquors as well as other liquid wastes, and are promising for the isolation of Cs+ isotopes in spent fuel reprocessing. While both AMP and PAN have demonstrable acid stability, and PAN has known resistance to gamma radiation, AMP-PAN composites have received only a limited analysis of their physiochemical and ion exchange performance following irradiation. In this publication, we explore the effect of high levels of gamma irradiation on the ion exchange properties of AMP and AMP-PAN as a Cs+-selective adsorbent under spent fuel dissolver liquor concentrations and acidity. We demonstrate no significant reduction in performance with respect to uptake kinetics or capacity upon irradiation, abiding by the same absorption mechanism observed in the established literature. Full article
(This article belongs to the Special Issue Novel Polymeric Materials for Application in Liquid Phase Separations)
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