Ion-Selective Electrodes Based on Polyvinyl Chloride Modified by p-(Trifluoroacetyl)Benzoate Groups
- Authors: Matveichuk Y.V.1, Rakhman’ko E.M.1
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Affiliations:
- Department of Chemistry, Belarusian State University
- Issue: Vol 74, No 6 (2019)
- Pages: 591-600
- Section: Articles
- URL: https://journals.rcsi.science/1061-9348/article/view/183235
- DOI: https://doi.org/10.1134/S1061934819040063
- ID: 183235
Cite item
Abstract
Ion-selective electrodes (ISEs), reversible to hydrophilic sulfate, hydrophosphate, and sulfide ions, are developed based on modified polyvinyl chloride (MPVC), combining the functions of a polymer matrix and a neutral carrier. A procedure for the synthesis of MPVC is described, which consists in grafting p-(trifluoroacetyl)benzoate groups to PVC. Previously, ISEs of this type contained PVC as a basis and p-(trifluoroacetyl)benzoic acid heptyl ester (p-TFABAHE). The use of MPVC significantly increases the lifetime of these ISEs by preventing changes associated both with the dissolution of p-TFABAHE (for -SE and S2–-SE, working in alkaline media) and with the crystallization of the hydrate form of p-TFABAHE on the surface of the -SE membranes working in acidic media.
About the authors
Yu. V. Matveichuk
Department of Chemistry, Belarusian State University
Author for correspondence.
Email: Yu_Matveychuk@mail.ru
Belarus, Minsk, 220030
E. M. Rakhman’ko
Department of Chemistry, Belarusian State University
Email: Yu_Matveychuk@mail.ru
Belarus, Minsk, 220030