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Nanocellulose-based aerogels with devisable structure and tunable properties via ice-template induced self-assembly
Ist Teil von
Industrial crops and products, 2022-05, Vol.179, p.114701, Article 114701
Ort / Verlag
Elsevier B.V
Erscheinungsjahr
2022
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Nanocellulose-based aerogels are widely used in various fields due to the lightweight and porous features. The pore structure plays a decisive role in the performances, but controllable fabrication of the nanocellulose-based aerogel with a tunable structure is still a challenge. Herein, we reported a facile approach to prepare nanocellulose aerogel with a designable pore structure by ice-induced self-assembly. The relationship between the properties and structure was investigated by simply tuning factors such as temperature gradient, freezing rate, infiltration interface, and solute concentration. The as-prepared aerogel exhibited regulable density (2.35–15.96 mg/cm3), pore size (2 nm-500 µm), and desirable flexibility which is suitable for thermal insulation application. The research provides new insight into the controllable preparation and functional application of nanocellulose-based aerogels.
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•Nanocellulose aerogels with tunable pore size and structure were fabricated.•The relationship between the properties and structure was investigated.•Ice-templating was applied to induce the self-assembly of the building blocks.•The as-prepared aerogels exhibited low density and desirable flexibility.•The nanocellulose-based aerogels are suitable for thermal insulation application.