4.6 Article

Superelastic and ultralight polyimide aerogels as thermal insulators and particulate air filters

Journal

JOURNAL OF MATERIALS CHEMISTRY A
Volume 6, Issue 3, Pages 828-832

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta09054d

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Funding

  1. Ministry of Science and Technology [2014CB643600]
  2. National Natural Science Foundation of China [51373185, 51522308, 21421061]

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We utilized electrospun polyimide nanofibers as building blocks to construct a hierarchically porous architecture through freeze-drying. Superelasticity, recoverable ultimate strain of 99%, has been obtained by thermally induced intermolecular condensation. Aerogels also possess ultralow density, high-temperature stability, low thermal conductivity and excellent performance in PM2.5 filtration.

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