Superelastic and ultralight polyimide aerogels as thermal insulators and particulate air filters†,Journal of Materials Chemistry A

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Superelastic and ultralight polyimide aerogels as thermal insulators and particulate air filters†
Journal of Materials Chemistry A ( IF 11.9 ) Pub Date : 2017-12-14 00:00:00 , DOI: 10.1039/c7ta09054d
Zhenchao Qian _{1,

2,

3,

4,

5} , Zhen Wang _{1,

2,

3,

4,

5} , Yi Chen _{1,

4,

5,

6,

7} , Shengrui Tong _{1,

4,

5,

6,

7} , Maofa Ge _{1,

4,

5,

6,

7} , Ning Zhao _{1,

2,

3,

4,

5} , Jian Xu _{1,

2,

3,

4,

5}

Affiliation

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 PM_2.5 filtration.

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