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Silicas with Polyoxyethylene Branches for Modification of Membranes Based on Microporous Block Copolymers

We have synthesized cubic and linear polysiloxanes containing polyoxyethylene branches (ASiP-Cu) using tetraethoxysilane, polyoxyethylene glycol, and copper chloride as precursors; the products are stable to self-condensation. The effect of copper chloride content on the chemical structure of ASiP-C...

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Autores principales: Davletbaeva, Ilsiya M., Faizulina, Zulfiya Z., Li, Ekaterina D., Sazonov, Oleg O., Efimov, Sergey V., Klochkov, Vladimir V., Arkhipov, Alexander V., Davletbaev, Ruslan S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10383942/
https://www.ncbi.nlm.nih.gov/pubmed/37505008
http://dx.doi.org/10.3390/membranes13070642
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author Davletbaeva, Ilsiya M.
Faizulina, Zulfiya Z.
Li, Ekaterina D.
Sazonov, Oleg O.
Efimov, Sergey V.
Klochkov, Vladimir V.
Arkhipov, Alexander V.
Davletbaev, Ruslan S.
author_facet Davletbaeva, Ilsiya M.
Faizulina, Zulfiya Z.
Li, Ekaterina D.
Sazonov, Oleg O.
Efimov, Sergey V.
Klochkov, Vladimir V.
Arkhipov, Alexander V.
Davletbaev, Ruslan S.
author_sort Davletbaeva, Ilsiya M.
collection PubMed
description We have synthesized cubic and linear polysiloxanes containing polyoxyethylene branches (ASiP-Cu) using tetraethoxysilane, polyoxyethylene glycol, and copper chloride as precursors; the products are stable to self-condensation. The effect of copper chloride content on the chemical structure of ASiP-Cu has been established. A special study was aimed at defining the modifying effect of ASiP-Cu on the sorption characteristics of membranes based on microporous, optically transparent block copolymers (OBCs). These OBCs were produced using 2,4-toluene diisocyanate and block copolymers of ethylene and propylene oxides. The study demonstrated significantly increased sorption capacity of the modified polymers. On the basis of the modified microporous block copolymers and 1-(2-pyridylazo)-2-naphthol (PAN) analytical reagent, an analytical test system has been developed. Additionally, the modified OBCs have the benefit of high diffusion permeability for molecules of organic dyes and metal ions. It has been shown that the volume of voids and structural features of their internal cavities contribute to the complex formation reaction involving PAN and copper chloride.
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spelling pubmed-103839422023-07-30 Silicas with Polyoxyethylene Branches for Modification of Membranes Based on Microporous Block Copolymers Davletbaeva, Ilsiya M. Faizulina, Zulfiya Z. Li, Ekaterina D. Sazonov, Oleg O. Efimov, Sergey V. Klochkov, Vladimir V. Arkhipov, Alexander V. Davletbaev, Ruslan S. Membranes (Basel) Article We have synthesized cubic and linear polysiloxanes containing polyoxyethylene branches (ASiP-Cu) using tetraethoxysilane, polyoxyethylene glycol, and copper chloride as precursors; the products are stable to self-condensation. The effect of copper chloride content on the chemical structure of ASiP-Cu has been established. A special study was aimed at defining the modifying effect of ASiP-Cu on the sorption characteristics of membranes based on microporous, optically transparent block copolymers (OBCs). These OBCs were produced using 2,4-toluene diisocyanate and block copolymers of ethylene and propylene oxides. The study demonstrated significantly increased sorption capacity of the modified polymers. On the basis of the modified microporous block copolymers and 1-(2-pyridylazo)-2-naphthol (PAN) analytical reagent, an analytical test system has been developed. Additionally, the modified OBCs have the benefit of high diffusion permeability for molecules of organic dyes and metal ions. It has been shown that the volume of voids and structural features of their internal cavities contribute to the complex formation reaction involving PAN and copper chloride. MDPI 2023-07-02 /pmc/articles/PMC10383942/ /pubmed/37505008 http://dx.doi.org/10.3390/membranes13070642 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Davletbaeva, Ilsiya M.
Faizulina, Zulfiya Z.
Li, Ekaterina D.
Sazonov, Oleg O.
Efimov, Sergey V.
Klochkov, Vladimir V.
Arkhipov, Alexander V.
Davletbaev, Ruslan S.
Silicas with Polyoxyethylene Branches for Modification of Membranes Based on Microporous Block Copolymers
title Silicas with Polyoxyethylene Branches for Modification of Membranes Based on Microporous Block Copolymers
title_full Silicas with Polyoxyethylene Branches for Modification of Membranes Based on Microporous Block Copolymers
title_fullStr Silicas with Polyoxyethylene Branches for Modification of Membranes Based on Microporous Block Copolymers
title_full_unstemmed Silicas with Polyoxyethylene Branches for Modification of Membranes Based on Microporous Block Copolymers
title_short Silicas with Polyoxyethylene Branches for Modification of Membranes Based on Microporous Block Copolymers
title_sort silicas with polyoxyethylene branches for modification of membranes based on microporous block copolymers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10383942/
https://www.ncbi.nlm.nih.gov/pubmed/37505008
http://dx.doi.org/10.3390/membranes13070642
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