INFLUENCE OF XYLENE ON THE TEXTURAL FEATURES OF THE HYBRID GEL MATERIALS
Nina E. Velikova, Yuliya E. Vueva, Yordanka Y. Ivanova, Isabel M. Salvado, Maria H. Fernandes
Strony: 162-168
Opublikowano: 2 Jun 2014
Wyświetlenia: 3,907
Pobrania: 831
Streszczenie: Mesoporous hybrid- organic-inorganic silicas with amine bridging group within the framework were synthesized by co-condensation of BTPA and TEOS under acidic conditions in the presence of amphihilic triblock-copolymer poly (ethylene oxide)-block-poly(propylene oxide)-block-poly(ethylene oxide) (PEO20PPO70PEO20), commonly known by the trade name Pluronic P123), as a structural directing agent for obtaining of mesoporous structure, and xylene as swelling agent. In our work we investigate the influence of the xylene amount on the pore size and surface area of the final hybrid materials. The resultantmaterials were true hybrids confirmed by 29Si MAS NMR and 13C CP MAS NMR analyses. Increasing the amount of xylene slightly decreased the mesopore size of all hybrids with high content of TEOS. The compositions with highest content of BTPA showed most significant increase in pore size due to the higher amount of the flexible organic chains present in the structure that make the framework more flexible and collapse resistant.
Słowa kluczowe: sol-gel, mesoporous materials, hybrid materials, surfactant, pore swelling agent
Cytowanie artykułu: Nina E. Velikova, Yuliya E. Vueva, Yordanka Y. Ivanova, Isabel M. Salvado, Maria H. Fernandes. INFLUENCE OF XYLENE ON THE TEXTURAL FEATURES OF THE HYBRID GEL MATERIALS. Journal of International Scientific Publications: Materials, Methods & Technologies 8, 162-168 (2014). https://www.scientific-publications.net/en/article/1000159/
Powrót do spisu treści tomu
© 2026 The Author(s). This is an open access article distributed under the terms of the
Creative Commons Attribution License https://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This permission does not cover any third party copyrighted material which may appear in the work requested.
Disclaimer: The Publisher and/or the editor(s) are not responsible for the statements, opinions, and data contained in any published works. These are solely the views of the individual author(s) and contributor(s). The Publisher and/or the editor(s) disclaim any liability for injury to individuals or property arising from the ideas, methods, instructions, or products mentioned in the content.
