Impact of Alkyl Chain Length on the Properties of SiO2-Based Aerogels

2025/07/01 by I. O. Gozhikova, Inna O. Gozhikova, Elena A. Straumal +6 · 1 citation
Chemistry · Materials Science · #Aerogels and thermal insulation #Silicone and Siloxane Chemistry #Surface Modification and Superhydrophobicity

paper · doi:10.1134/s0036023625600431

crossref issued 2025/07/01 · crossref published 2025/07/01 · crossref published-print 2025/07/01 · openalex publication_date 2025/07/01 · crossref published-online 2025/08/26 · crossref created 2025/08/26 · openalex created_date 2025/10/10 · crossref deposited 2026/04/04 · crossref indexed 2026/07/30 · openalex updated_date 2026/07/30

Abstract

Abstract Modified silica aerogels have been obtained by co-gelation of tetramethoxysilane and acylated (3-aminopropyl)trimethoxysilane of general formula (MeO)3Si–(CH2)3–NHC(O)–R) followed by supercritical drying in CO2. Alkyl substituent elongation has been shown to increase aerogel hydrophobicity up to formation of superhydrophobic materials (contact angle is 163.7°). Specific surface area of the aerogels can vary from 40 to 1375 m2/g.

Citations

• Physisorption of gases, with special reference to the evaluation of surface area and pore size distribution (IUPAC Technical Report)

Cited by

• Effect of Modifying Group Size and Type on the Morphological and Functional Characteristics of Hydrated Silica

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