Results 11 to 20 of about 35,379 (304)
Editorial on Special Issues “Aerogels” and “Aerogels 2018” [PDF]
Aerogels can be defined as ultralight materials with a 3D porous structure, similar to their parent wet gels, where the solvent has been replaced by a gas without a collapse of the gel structure, thanks to the drying process used (supercritical CO2 drying, freeze drying, etc [...]
Quignard, Françoise, Tanchoux, Nathalie
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Emerging applications of aerogels in textiles
The high specific surface areas and porosities of aerogels can impart desirable properties to textiles. The most established application of aerogels in textiles is the enhancement of thermal insulation and this has been the subject of some excellent ...
Steven J. McNeil, Honey Gupta
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Preparation and Characterization of Chitosan-Coated Pectin Aerogels: Curcumin Case Study
The following study describes the preparation of pectin aerogels and pectin aerogels coated with an external layer of chitosan. For the preparation of chitosan-coated pectin aerogels, a modified coating procedure was employed.
Milica Pantić +3 more
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Aerogels have recently started to be considered as “advanced materials”; therefore, as a general consideration, aerogels’ toxicity testing should focus on their functionality which resides in their nanoscale open internal porosity.
Monica Neagu +5 more
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Boron nitride (BN) aerogels materials have low density characteristics and stable three-dimensional network structure, which can be used as high thermal conductivity ultralight materials or thermal conductive polymer additives.
Xiangqian Jiang +6 more
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Properties of bio-based gum Arabic/clay aerogels [PDF]
Lightweight bio-based aerogels from sustainable gum Arabic (GA) and sodium montmorillonite (Na+-MMT) clay were prepared by means of a simple freeze-drying process. GA/clay aerogels showed high porosity (87.9%–94.9%) of mainly open type and the mechanical
Abt, Tobias Martin +2 more
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Chitin Nanowhisker Aerogels [PDF]
AbstractChitin nanowhiskers are structured into mesoporous aerogels by using the same benign process used previously in our group to make cellulose nanowhisker aerogels. The nanowhiskers are sonicated in water to form a hydrogel before solvent‐exchange with ethanol and drying under supercritical CO2 (scCO2). Aerogels are prepared with various densities
Heath, Lindy +2 more
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Nitrogen sorption as a tool for the characterisation of polysaccharide aerogels [PDF]
Supercritically dried aerogels of several polysaccharides (chitin, chitosan, alginate, alginic acid, k- carrageenan, and agar) have been characterised by physisorption ofN2. Surface areas as high as 570m2 g−1 have been measured.
Boissière, M. +7 more
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Optical transmission measurements were made on 98% porosity silica aerogel samples under various degrees of uniaxial strain. Uniaxially compressed aerogels exhibit large birefringence, proportional to the amount of compression, up to the 15% strain studied.
Bhupathi, P. +7 more
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Preparation and electrochemical capacitance of high surface area TiO2–RuO2 aerogels
High surface area RuO2–TiO2 composite aerogels with different RuO2 concentrations were prepared through a modified non-alkoxide sol-gel route, followed by CO2 supercritical drying and evaluated as electrodes for energy storage devices.
Gabriella M.V. Dias +5 more
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