What is it about?

Polytetrafluoroethylene-based aerogel was synthesized for the first time. Graphene oxide was used as a binder. In this paper, we report on the successful synthesis of aerogel based on polytetrafluoroethylene (70%) and graphene oxide. After reduction with hydrazine and annealing at 370 °C, the aerogel with a specific weight of approximately 30 mg/cm3 became hydrophobic (CWA for some samples reached 163.7 degrees).

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Why is it important?

The unique properties of aerogels are formed due to their composition, mainly consisting of air. Silica aerogels have a density of from 0.003 to 0.1 g/cm3 and are characterized by a high specific surface area, a low dielectric constant, low thermal conductivity and superhydrophobicity. At the same time, we did not find a single publication about aerogels that included polytetrafluoroethylene (PTFE), which is known for its hydrophobicity. The reason for this may be that PTFE has a very low adhesion and is not wetted by most organic solvents. Therefore, obtaining aerogel based on PTFE is an interesting and technically challenging task.


Aerogel with polytetrafluoroethylene glazing units have a large energy saving potential. Aerogel with PTFE and graphene oxide glazing units are promising for daylight management in buildings. Aerogel glazing units may have a high environmental impact.

Evgeny Kabachkov
Institute of the Problems of Chemical Physics Russian Academy of Sciences

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This page is a summary of: Novel Superhydrophobic Aerogel on the Base of Polytetrafluoroethylene, ACS Applied Materials & Interfaces, August 2019, American Chemical Society (ACS),
DOI: 10.1021/acsami.9b10455.
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