The impact of alkyl chain length on the properties of SiO2-based aerogels
- 作者: Gozhikova I.O.1, Straumal E.A.1, Kottsov S.Y.2, Postnova E.Y.3, Lermontov S.A.1
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隶属关系:
- Institute of Physiologically Active Compounds at Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry
- Kurnakov Institute of General and Inorganic Chemistry
- Institute of Solid State Physics
- 期: 卷 70, 编号 7 (2025)
- 页面: 959-968
- 栏目: НЕОРГАНИЧЕСКИЕ МАТЕРИАЛЫ И НАНОМАТЕРИАЛЫ
- URL: https://ogarev-online.ru/0044-457X/article/view/306852
- DOI: https://doi.org/10.31857/S0044457X25070129
- EDN: https://elibrary.ru/jonxpj
- ID: 306852
如何引用文章
详细
Modified silica aerogels were obtained by co-gelation of tetramethoxysilane and acylated 3-aminopropyl-trimethoxysilane (with the general formula (MeO)3–Si–(CH2)3–NHC(O)–R), followed by supercritical drying in CO2. Methyl esters of acetic, valeric, pelargonic, and stearic acids were used as acylating agents. The resulting aerogels were characterized using low-temperature nitrogen adsorption, scanning electron microscopy (SEM), and infrared spectroscopy (IR). It was shown that the specific surface area of the aerogels significantly depends on the length of the alkyl substituent in the modified silane and can vary from 40 to 1375 m²/g. An increase in the length of the alkyl substituent also leads to increased hydrophobicity of the aerogel, up to the formation of superhydrophobic materials (contact angle is 163.7°).
作者简介
I. Gozhikova
Institute of Physiologically Active Compounds at Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry
Email: lenochka.chg@gmail.com
1 Severnij pr., Chernogolovka, 142432 Russia
E. Straumal
Institute of Physiologically Active Compounds at Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry
Email: lenochka.chg@gmail.com
1 Severnij pr., Chernogolovka, 142432 Russia
S. Kottsov
Kurnakov Institute of General and Inorganic Chemistry
Email: lenochka.chg@gmail.com
Moscow, 119991 Russia
E. Postnova
Institute of Solid State Physics
Email: lenochka.chg@gmail.com
2 Academician Ossipyan str., Chernogolovka, 142432 Russia
S. Lermontov
Institute of Physiologically Active Compounds at Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry
编辑信件的主要联系方式.
Email: lenochka.chg@gmail.com
1 Severnij pr., Chernogolovka, 142432 Russia
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