Journal Article

Hybrid organic-inorganic materials on the basis of acrylic monomers and TEOS prepared by simultaneous UV-curing and sol-gel process

Meier-Haaсk, Jochen, Horechyy, Andriy, Demchyna, Oksana, Stamm, Manfred, Yevchuk, Iryna, Demydova, Khrystyna, Malanin, Mikhail, Häußler, Liane

2020

Overview

In this work cross-linked hybrid organic-inorganic membranes consisting of polymeric matrix functionalized with sulfonic groups and uniformly distributed silica domains have been successfully synthesized through in situ polymerization strategy via photo-initiated copolymerization of acrylic monomers (acrylonitrile AN, acrylamide AAm, 3-sulfopropyl acrylate potassium salt SPAK) and simultaneous formation of silica counterpart using TEOS-based sol-gel system. N,N′- methylenebis(acrylamide) (MBA) was used as a cross-linker. The ratio between monomers was maintained stable, whereas the amount of added sol-gel system was varied. The influence of inorganic component content on properties of hybrid polymer-inorganic membranes was investigated. Chemical composition, thermal properties, structure and morphology of the obtained hybrid membranes were investigated by ATR-FTIR, TGA, DSC, SEM and EFTEM. Proton conductivity of the synthesized membranes was high (7.6 to 13.5 mS/cm) and increases with an increase of silica content. The prepared membranes were thermally stable up to 90 °C, and exhibited proton conductivity and swelling coefficients sufficient for possible use as proton-conducting membranes.

• Publisher: Springer Netherlands,Springer Nature B.V
• Subject: Acrylamide / Acrylics / Characterization and Evaluation of Materials / Chemical composition / Chemistry / Chemistry and Materials Science / Copolymerization / Crosslinking / Industrial Chemistry/Chemical Engineering / Inorganic materials / Membranes / Monomers / Morphology / Original Paper / Polymer Sciences / Potassium salts / Protons / Silicon dioxide / Sol-gel processes / Sulfonic acid / Thermal stability / Thermodynamic properties