This paper deals with the preparation of new composites between polymerized/crosslinked high internal phase emulsions (polyHIPEs) and carbon nanotubes (CNTs), specifically designed for pharmaceutical analytical applications. While the composition of the polyHIPEs was maintained constant, the amount of CNTs was varied from 0.5% to 1% w/v. As proof-of-concept, the materials were tested for solid-phase extraction. Three drugs with different physical-chemical properties, namely 17β-estradiol (E2), Naproxen (NPX), and Oxprenolol (OXP) were selected as probes to investigate the adsorption/elution conditions on/from the CNT/polyHIPE composites for future analytical applications. The sorption and desorption behavior of the three analytes was studied at different pH values. The experimental results are coherent with chemistry of the support and the physical-chemical characteristics of the considered analytes. The incorporation of CNTs into the polyHIPEs network strongly influences the sorption properties of these materials.
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| http://dx.doi.org/10.1016/j.jpba.2021.114391 | DOI Listing |
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