Silicas with Polyoxyethylene Branches for Modification of Membranes Based on Microporous Block Copolymers
Ilsiya M. Davletbaeva,
Zulfiya Z. Faizulina,
Ekaterina D. Li,
Oleg O. Sazonov,
Sergey V. Efimov,
Vladimir V. Klochkov,
Alexander V. Arkhipov,
Ruslan S. Davletbaev
Affiliations
Ilsiya M. Davletbaeva
Technology of Synthetic Rubber Department, Kazan National Research Technological University, 68 Karl Marx Str., 420015 Kazan, Russia
Zulfiya Z. Faizulina
Technology of Synthetic Rubber Department, Kazan National Research Technological University, 68 Karl Marx Str., 420015 Kazan, Russia
Ekaterina D. Li
Technology of Synthetic Rubber Department, Kazan National Research Technological University, 68 Karl Marx Str., 420015 Kazan, Russia
Oleg O. Sazonov
Technology of Synthetic Rubber Department, Kazan National Research Technological University, 68 Karl Marx Str., 420015 Kazan, Russia
Sergey V. Efimov
Institute of Physics, Kazan Federal University, 18 Kremlevskaya Str., 420008 Kazan, Russia
Vladimir V. Klochkov
Institute of Physics, Kazan Federal University, 18 Kremlevskaya Str., 420008 Kazan, Russia
Alexander V. Arkhipov
Institute of Electronics and Telecommunications, Peter the Great St. Petersburg Polytechnic University, 29 Polytechnicheskaya St., 195251 St. Petersburg, Russia
Ruslan S. Davletbaev
Material Science and Technology of Materials Department, Kazan State Power Engineering University, 51 Krasnoselskaya Str., 420066 Kazan, Russia
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.
