Jump to main content
Jump to site search


Vacuum-dried flexible hydrophobic aerogels using bridged methylsiloxane as reinforcement: performance regulation with alkylorthosilicate or alkyltrimethoxysilane co-precursors

Author affiliations

Abstract

Aerogels are porous materials with many attractive properties, but their large-scale applications are always restricted by the laborious procedures and poor mechanical properties. Herein, a novel monolithic flexible hydrophobic aerogel was prepared using a new type of bridged methylsiloxane as a precursor and tetraethoxysilane (TEOS), methyltrimethoxysilane (MTMS) or propyltrimethoxysilane (PTMS) as co-precursors in a facile and environmentally friendly procedure. The bridged precursor can not only help construct networks of aerogels but also act as an enhancer for its particular molecular structure. The co-precursors TEOS, MTMS, PTMS can tailor the texture and the properties of the aerogels by controlling the hydrolysis and condensation rates and their molecular structures. Co-precursors with faster reaction rates result in smaller particle size in the skeleton and a larger specific surface area. The obtained aerogels are hydrophobic and exhibit good mechanical properties with deformation as high as 80% and low density (0.078 g cm−3). The excellent properties make the aerogels good candidates for oil/water separation.

Graphical abstract: Vacuum-dried flexible hydrophobic aerogels using bridged methylsiloxane as reinforcement: performance regulation with alkylorthosilicate or alkyltrimethoxysilane co-precursors

Back to tab navigation

Supplementary files

Publication details

The article was received on 09 Aug 2018, accepted on 10 Dec 2018 and first published on 24 Dec 2018


Article type: Paper
DOI: 10.1039/C8NJ04038A
Citation: New J. Chem., 2019, Advance Article
  •   Request permissions

    Vacuum-dried flexible hydrophobic aerogels using bridged methylsiloxane as reinforcement: performance regulation with alkylorthosilicate or alkyltrimethoxysilane co-precursors

    D. Chen, K. Dong, H. Gao, T. Zhuang, X. Huang and G. Wang, New J. Chem., 2019, Advance Article , DOI: 10.1039/C8NJ04038A

Search articles by author

Spotlight

Advertisements