| Autor: |
Lebedeva, O. V., Raskulova, T. V., Beznosyuk, S. A., Ryabykh, A. V., Fomina, L. V., Sipkina, E. I. |
| Zdroj: |
Membranes and Membrane Technologies; April 2023, Vol. 5 Issue: 2 p92-97, 6p |
| Abstrakt: |
Abstract: Hybrid organic-inorganic membranes based on tetraethoxysilane and orthophosphoric acid-doped copolymers of 4-vinylpyridine (4-VP) and 2-hydroxyethyl methacrylate (HEMA) have been formed by the sol-gel synthesis method. The membranes are characterized by high values of exchange capacity and proton conductivity. An increase in the proton conductivity of hybrid organo-inorganic membranes compared to the initial copolymer can be associated with the generation of crystallization water during the formation of a silicon dioxide fragment, which follows from quantum-chemical modeling of the local structure of the membrane. The latter includes an organic part from the copolymerization product of 4-VP with HEMA (44 atoms) and an inorganic part of 27 atoms, repeating the structure of the silicon dioxide block. |
| Databáze: |
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