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Polyimide Nanofibers by "Green" Electrospinning via Aqueous Solution for Filtration Applications

Title data

Jiang, Shaohua ; Hou, Haoqing ; Agarwal, Seema ; Greiner, Andreas:
Polyimide Nanofibers by "Green" Electrospinning via Aqueous Solution for Filtration Applications.
In: ACS Sustainable Chemistry & Engineering. Vol. 4 (2016) Issue 9 . - pp. 4797-4804.
ISSN 2168-0485
DOI: https://doi.org/10.1021/acssuschemeng.6b01031

Abstract in another language

The use of large amounts of environmentally unfriendly, toxic, and flammable organic solvents in electrospinning of polymers puts demand on the development of new methods and formulations for making water stable hydrophobic nanofibers from water-soluble precursor solution. Electrospun polyimide (PI) nanofibers are of particular interest for a variety of applications due to their extraordinary thermal and chemical stability. However, the intermediate precursor of polyimide, the polyamic acid (PAA) has to be electrospun from harmful solvents like dimethylformamide (DMF) which is a serious obstacle for technical applications of electrospun PI. This work highlights the formation of PI nanofibers by “green” electrospinning of ammonium salts of PAA from water. The high temperature used for imidization in the second step also removed ammonia and the template polymer by sintering giving PI nanofibers with diameter 295 ± 58 nm. The thus obtained PI nanofibers by “green” electrospinning were defined as “green” PI nanofibers. Aerosol filtration of "green" PI nanofibers showed a performance that was very similar to PI nanofibers obtained by electrospinning of PAA from DMF. Additionally, it has been shown that the "green" PI nanofibers were suitable for the filtration of hot oil as well.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 13 Aug 2018 07:20
Last Modified: 13 Aug 2018 07:20
URI: https://eref.uni-bayreuth.de/id/eprint/45415