1. Ion exchange membranes based on silica and sulfonated copolymers of styrene with allyl glycidyl ether
- Author
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E. A. Malahova, Anton V. Kuzmin, Alexandra Chesnokova, S. D. Maksimenko, N. A. Ivanov, O. V. Lebedeva, T. V. Raskulova, Yu. N. Pozhidaev, E. I. Sipkina, and A. E. Rzhechitskiy
- Subjects
chemistry.chemical_classification ,Materials science ,Allyl glycidyl ether ,General Chemical Engineering ,Energy Engineering and Power Technology ,02 engineering and technology ,General Chemistry ,Activation energy ,Polymer ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Styrene ,Tetraethyl orthosilicate ,chemistry.chemical_compound ,Fuel Technology ,Membrane ,chemistry ,Chemical engineering ,Geochemistry and Petrology ,Polymer chemistry ,Copolymer ,Thermal stability ,0210 nano-technology - Abstract
Proton-conducting membranes have been obtained by sol–gel synthesis involving tetraethyl orthosilicate and sulfonated suspension copolymers of styrene with allyl glycidyl ether. The membranes are gels consisting of a polymer matrix, in which silica particles are uniformly distributed. The synthesized membranes are characterized by the proton conductivity of up to 4.21 × 10–2 S/cm at 343 K and 75% humidity, an ion exchange capacity of 3.5 meq/g, a proton-transfer activation energy of 25.2 ± 2.6 kJ/mol, thermal stability of up to 130°C, and mechanical strength (tensile modulus of elasticity, 322 MPa).
- Published
- 2017
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