UV-CURABLE PROTON CONDUCTIVE ORGANIC-INORGANIC MEMBRANES BASED ON ACRYLIC MONOMERS AND SOL-GEL DERIVED SILICA
This article describes the synthesis and characterization of the new UV-curable cross-linked hybrid polymer-inorganic materials. The membranes were synthesized via UV-initiated copolymerization in situ based both on hydrophilic and hydrophobic acrylic monomers with the simultaneous formation of inorganic network in sol-gel reaction of precursors 3-methacryloxypropyl trimethoxysilane (MAPTMS) and tetraethyl orthosilicate (TEOS). The composition of the polymeric counterpart was varied by changing the ratio of hydrophilic and hydrophobic monomers while the content of the inorganic counterpart was kept constant. FTIR, SEM were used to characterize the morphology and chemical structure of the resulting membranes. The proton conductivity, oxidative stability, water and methanol uptake of the synthesized membranes were measured, and strong correlation between the properties of the membranes and the monomer ratio (AMPS : AA) was established, which makes it possible to regulate the membrane characteristics. The obtained new UV-curable cross-linked hybrid polymer-inorganic materials can be used for the development of the proton-conducting membranes for fuel cells.
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