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Cellulose–Silica Nanocomposite Aerogels by In Situ Formation of Silica in Cellulose Gel
Author(s) -
Cai Jie,
Liu Shilin,
Feng Jiao,
Kimura Satoshi,
Wada Masahisa,
Kuga Shigenori,
Zhang Lina
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201105730
Subject(s) - cellulose , materials science , nanocomposite , aqueous solution , aerogel , sol gel , composite number , chemical engineering , bacterial cellulose , composite material , chemistry , organic chemistry , nanotechnology , engineering
Light support : Regenerated cellulose gel prepared from an aqueous alkali–urea solution serves as scaffold/template for the in situ preparation of cellulose–silica composite aerogels (see picture) by a sol–gel process from organic silicates, and drying with supercritical CO 2 . The resulting composite aerogels have the mechanical strength and flexibility, large surface area, semi‐transparency, and low thermal conductivity of the cellulose aerogels.